Apr 11, 2018

Apr - 11 2018 | no comments | By

Notifications of new show notes and edits are tweeted at: twitter.com/ddhart.
– They’re tagged with #Zentech.
– When what’s said is unclear to me (or I’m unfamiliar with a topic) I tend to quote (” “) verbatim.
– Editor’s comments are delimited by < >

For a couple of months, the audio of today’s show is here. Recent shows are here.

The intro & outro music was by Pentatonix.


Glenn was in the studio today. Paul was on the road and didn’t get a chance to call in. Glenn spent some time trying to contact Paul so the notes are a little light today.


Glenn thanked those who are part of KVMR. <If you’d like to become a contributing member, you can call the business office at 530-265-9073 or go to kvmr.org>

He also invited listeners to call in with their questions and comments at 530-265-9555 or email the guys at zen at kvmr dot org.

On Tue April 17 at 5:30 to 7:30 Paul will be the key speaker at the Unitarian Universalist Church on Church Street in Grass Valley. “It will be a talk on the current Facebook Cambridge Analytica Gold Country UNA USA”.

Version 11.3 of the Apple IOS operating system has been released. Glenn has already installed it on both his iPhone and iPad, but he’s encountered a problem. On many websites and apps it no longer automatically enters his username and password. He hasn’t yet found a solution and asked listeners to call in if anyone has found the answer.

Marilyn called about changing oil in her 1972 vehicle. She has always used 20-50 oil but has been told that 30 weight would work fine. She wanted to know if it’s ok to mix viscosities.

Glenn was a bit hesitant in his reply but said that if it has “always called for that” (the 20-50), it would probably be best to stick with that. And as for mixing the 2 viscosities, he didn’t think that would be a problem if you do a full oil change — drain the old oil & change the filter.

She also a 2-stroke engine in a piece of garden equipment that uses a gas & oil mixture of 50:1. She found out that the oil was bad but was told that instead of throwing it out, she could use it in her car. Glenn didn’t think that would be smart. It would likely cause a smoky exhaust and the oil might not be good for the gas lines, he said, and suggested she give it to a neighbor with similar equipment. She noted again that the oil went bad, so that would be out of the question.

Dave “Buzz” Barnett, the KVMR engineer, came into the studio to add to the conversation. He too didn’t think it was a good idea to put it in a car and suggested putting it a lawn mower, but not at “full mixture”. For a gallon of lawn mower gas “put a pint of the oil mixed in” and “it will burn up..it will get rid of what you need to get rid of”. He said the lawn mower typically has a 4-cycle engine and it’s more forgiving than putting the stuff in a car. He also concurred with Glenn that she should stick with the 20-50 oil in her car.

Scott called from Southern California. He agreed with Dave. He has kept oil around for a long time and never had it go bad.

He also thought she should stick with the 20-50 oil. The “clearances start open up a bit” as an older vehicle puts on a lot of miles and a higher viscosity oil helps keep the oil pressure up.

Glenn brought up a problem Marilyn was having in the past in trying to open .pdf documents. She had the default set to TWINUI which, he thought, has to do with scanning. He said that to handle such a problem, hover your mouse over the file you’d like to open and right-click on it -> click on ‘Open With’ and you’ll be shown various apps that can open the file. At this point choose the app you want to be the default program that will be used to open that particular file type. In the future, that will be the program that’s launched whenever you double click on the particular file type (.pdf).

Gary called. He has old iPhone 5C and has never upgraded the operating system because he’s heard people complaining about problems they’ve had after upgrading. He wondered if he too would have such problems. Glenn replied…
– Yes, it will make a significant change in how you use the phone”. “Every major update has caused something new or different and in some cases actually caused older things not to work”
– He’ll probably have to upgrade by stepping upward thru the version numbers.
– Looking it up, Glenn read an article from last June saying that IOS 11 update ends support for the iPhone 5 and 5C. They will no longer receive software or security updates.
– Not updating a phone means it could be subject to security issues.
– The most recent update you can get for the 5C is IOS 10.
– If you haven’t had security issues, it might be best just to leave it the way it is.

Gary wanted to know how find what version of the OS he has. Glenn said to go to Setting -> General -> About -> Version. Gary found he has version 9.2.1.

Gary said he’s considering just getting the model SE. It has the same smaller size as the 5C and has all the bell & whistles. It’s still being sold new with technical support and the price is not too bad. Glenn thought that it may be a good way to go. He said to back it <the 5C, I guess> up on your computer using iTunes. Then you “can synch the new phone from iTunes, once you get it started and set up”.

A listener Paul called. He has an old iPod he’d like to donate, maybe to some senior citizen. He first wants to save the music from it to his computer.
– Connect the iPod to the computer. If iTunes doesn’t automatically start, then open it manually. You should then see what’s on the iPod and be able to tell it to “back up the music into iTunes”.
– Glenn thought he should then be able to move the music to other devices by using iTunes, but he wasn’t sure.
– On second thought, Glenn said to hold off and check the show notes in the next couple of days, Paul might have some suggestions. <Check some Apple forums or discussion groups for advice.> Or check back in 2 weeks for a more definitive answer.

Paul wanted to make his donation before some program expires. <Supposedly Glenn mentioned some program earlier in the hour that I didn’t hear — probably in when he read the calendar of events.> Glenn replied that “the collection continues thru Sat April 14” and suggested Paul email the guys (zen at kvmr dot org) to get a quicker answer. More info about the donation program can be found at tuneswork.org. It’s Music And Memory, an organization for people with Alzheimer’s or dementia. Donation sites are KVMR, Center For The Arts, Clock Tower Records, The Wooden Spoon and in Auburn it’s Cherry Records.

Steve called. He wanted to know the difference between an image and a backup. Trying to keep it simple, Glenn said and ‘image’ “takes a picture of the hard drive and duplicates it”. Typically that will involve another hard drive of the same size. In the past it’s been used to clone a drive so you can put a new drive into your computer, which generally doesn’t work if your operating system is on it.

With a backup you can choose what you want to back up and where. It’s recommended having target drive that’s twice (or more) the size of the drive you’re backing up.

Steve wants to back up a program he’s been using. But Glenn said backing up doesn’t work for programs, they need to be reinstalled. Steve doesn’t have the original disks for the program. So Glenn told him to call the company that created the program and ask how to install it on a new computer. Also, you can do a web search for an older program. You might be able to get it cheaply.

Last Updated 10:53 PM 4-11-2018

Mar 28, 2018

Mar - 28 2018 | no comments | By

Busted Technology– where to start?!?
I love HIREN BOOT CD Described Here and
what’s on it
download it here and More Info about Fake Download Links etc.

Cambridge Analytica and you- FB Data Breakout!
Happy Birthday Viagra!

PodCasts, Flash and Old KVMR Radio Shows 

BitCoin, BlockChain Should I Shouldn’t I?!

is it a Currency or a security What is it so we can regulate it!

Car Battery Charging.. what’s the dealy?! (PDF)

Learning JQUERY for Web Pages Clever Demo Here


Notifications of new show notes and edits are tweeted at: twitter.com/ddhart.
– They’re tagged with #Zentech.
– When what’s said is unclear to me (or I’m unfamiliar with a topic) I tend to quote (” “) verbatim.
– Editor’s comments are delimited by < >

For a couple of months, the audio of today’s show is here. Recent shows are here.>

The intro & outro music was by Pentatonix.


Both Paul and Glenn were in the studio today.


Glenn reminded listeners that backups are critical to mitigate failure of hard drives. Paul added that it’s important to test your backups by trying to restore the data.

Paul mentioned things from the past that assisted the visually impaired. He noted that webpages are much more readable than they used to be by complying with the ADA (Americans With Disabilities Act). He recalled the software “Jaws”, which is a screen reader. But it had a bug that made it repeatedly read any flashing text that it encountered.

There also was a device that was basically a camera on a tripod. It would read whatever you put under it, like a book. Then it would perform optical character recognition and read it to you.

Glenn told us about an app, whose name he couldn’t recall, for the visually impaired that will read the ingredients on food labels. And that reminded Paul of the time he used Google Translate to read the instructions for a front door security alarm he got from China. It was all in Chinese, not a word of English, and though the translation was a bit funky, it was surprisingly successful.

Paul talked a bit about trouble shooting computers. His first step is to be sure the hardware is ok before diagnosing the software. So, how does one test the hardware?

The underlying hardware of PCs & Macs is now more similar than it ever was. They both use Intel CPUs and the PCs can also use the AMD CPUs. They have the same kind of memory and same peripheral ports: PCI & PCI Express.

The free Linux based Hiren Boot CD is a piece of software that comes on a bootable CD for diagnosing both a PC and Mac. <see link above> It bypasses the operating system and doesn’t touch the software on your computer. It tests such things as memory, hard drive, temperature sensors, the bus, camera, internet connections, wi-fi interface, etc.

It has 300 to 400 utilities among which is one to recover your password. If you forgot the password to your Windows machine, it can look at the hard drive that contains Windows and reset the password. Paul’s favorite test is the hard drive SMART test, which performs a detailed diagnostic of your hard drive. Paul advised googling the test results from Hiren to get more details on what it found.

It’s such a sought after program that you should be wary of websites that you might find in searching for it. There are many pretenders that are up to no good. Use the link above.

Paul has been trying to change the way files as big as 50 or 60 megs are uploaded to <downloaded from> KVMR’s website called Podhawk. When Podhawk was installed in 2010, “Flash was the way to go”. But the tech industry is trending away from using Flash and many people have disabled it on their machines. So Paul has begun educating himself in using Jquery, <see link above> which is a library <of helpful code> that makes using Javascipt easier. The goal is to use a different method of file transfer.

In talking about transferring audio files, Paul mentioned audio.kvmr.org where, under the item called ‘archive’, there are KVMR shows that go back more than 10 years. You can play them directly or download. Assembling this archive is what led Paul to study Jquery. Right after the Jquery link above is a demo site that shows how it works.

The guys talked about Cambridge Analytica and how it acquired information on millions of Facebook users. Cambridge Analytica offered money to Facebook users if they allowed the Analytica app access to their profiles. It then went further and gathered info about all of the ‘friends’ of the initial user. Paul said he keeps changing the info in his profile to something that’s bogus — “just because a site asks you questions, doesn’t mean you need to tell them the truth”.
<How Calls for Privacy May Upend Business for Facebook and Google>

Glenn said he recently used the new iteration of Whatsapp on the iPhone. When he tries to ‘call’ using the handset & + icon in the upper right, where you put in the phone number, it says “New call. Whatsapp doesn’t have access to your contacts. Whatsapp needs access to your iPhone’s contacts to connect to other people on Whatsapp. To enable access, tap settings and turn on contacts”. Glenn has never given Whatsapp access to the contacts, but this latest version won’t work unless he does. <He didn’t say if he’ll continue using it>.

For over 10 years European law has entitled users to get all of the information a site has about them. Facebook has feature that lets you download all the data they have about you. It’s useful if you’ve lost photos that you put up on Facebook. And as a side effect, you get to find out all they know about you, not just what you’ve told them, Paul said. Someone found that by giving their phone number, the app had been able to access all their call records. Paul said that though he uses Facebook he doesn’t trust it.

Don called with a caution for Facebook users. He said just by using Facebook you implicitly trust them even though you think you don’t. You don’t know what their code does. Even if they ask permission for access to your phone number, you don’t know if they scrape all your information anyway, no matter whether you granted permission. Don thought it’s a good idea to move to a different platform that has better morals.

Marilyn called. She wanted to know that if you use your laptop at a public wi-fi, can your internet usage be associated with your laptop or only the wi-fi provider? Paul said that the IP address can be “traced to wherever it came from. If you’re at a Starbucks in Roseville, it’s traceable if somebody plugged in a computer there and the odds are very high, because of the use of cookies and so forth, that the next time you take that laptop and plunk it down somewhere else, they know where you are for a second time. And because of the use of cookies and so forth, they can then link together where the computer was with who the user was. So the answer is yes”.

Additionally, the Firefox and Chrome browsers have the incognito mode, which won’t send or receive cookies, supposedly. It’s not the same as being anonymous — you become “largely unknown, not completely unknown”.

She also asked if there’s a way to block incoming junk phone calls. Paul said, “if you have every contact that you know in there and the number comes up and it’s not somebody you know, it’s probably junk”. When you get a call from someone in your contact list, their name will be displayed. If no name shows up, it likely junk.

Marilyn realized she didn’t ask the right question. She meant to ask about junk text (txt) messages. Paul said he didn’t know a way to block spam text messages though there is software to block text from a particular sender.

Paul went on to say there is a way to block unsolicited phone calls. Some systems, including the one he uses called Voip.ms, “will require that when the phone rings and you pick it up that you press 1 to receive the call. So what will happen is that if it rings and rings and rings and then goes dead, the automated system on the other end didn’t know to press 1. It tells the CALLER ‘you must press 1 to continue'”.

She also said that she has suddenly been getting tons of spam email, she got very little before. Paul suggested she get a Gmail address. She said she’s using an old version of Outlook (from 2000) and Paul said it can’t be used with Gmail, she’ll have to get a later version. But that won’t solve the spam problem. Gmail, on the other hand, handles spam on their servers, she won’t be able to do anything about it on her home computer.

Paul said he’d like to do a special show about cryptocurrency (Bitcoin and blockchain) and bring in “our money guy” to explain.

Last Updated 8:10 PM 3-29-2018

Last Show Mar 14, 2018

Mar - 14 2018 | no comments | By

Steven Hawking no longer with us : (

How good is “Captcha” at stopping Rogue log-ins to any site(s)?!
V1 Captcha Shut Down…(reading road-signs and street names)
V2 Long Live That! Solve some Puzzles and Google will Remember you are NOT a Robot!
(Thanks for your patience, Alex!)

Air Gapped Security? Wazzat?
EternalBlue- the Exploit. Wazzat?!
WannaCry Ransomeware- SMB Defect & WinXP
CryptoMining Viruses and JavaScript, Etc.

Old IMac Linux– Whooppeee!
CALIBRE– Ebook Read/Convert:

WordPress: a Stable set of Plugins..
Google ReCaptha by BestWebSoft.. etc.



Notifications of new show notes and edits are tweeted at: twitter.com/ddhart.
– They’re tagged with #Zentech.
– When what’s said is unclear to me (or I’m unfamiliar with a topic) I tend to quote (” “) verbatim.
– Editor’s comments are delimited by < >

For a couple of months, the audio of today’s show is here. Recent shows are here.


Both Glenn and Paul were in the studio today.


It was a rainy day in Nevada City and Glenn reminded those who were driving to turn on their headlights. If the windshield wipers are on, a California State law requires the headlights be on too. Daytime running lights don’t count.

Students were in the studio today. 24 of them from a combined 5th & 6th grade class were there to see how a radio station worked. Katie came to the mic to read the station ID and others were briefly interviewed. Hudson was impressed by the CD collection. Glenn said that the CDs were being digitized for easier access to the music, eliminating the need to handle the discs.

Glenn said there are KVMR apps for both Android & iPhone. You should be able to find the links to them on the front page at kvmr.org.
<The link to the Android app makes it a bit difficult to find. I found it more directly by going here>

Next it was Aden who came to the mic. He noticed the abundance of rooms at the station. Glenn said the studio doors are usually open during the Zen Tech broadcast to make it seem more inviting and to capture the ambient sounds (as long as they’re not too loud).

Lastly, it was Persephone who took a turn at the mic. Her interest in radio stations centered on listening to county music

Glenn reminded listeners that they can listen to this show again at archives.kvmr.org.

There have been changes to the Zen Tech website as well as the KVMR site. The Zen Tech website and KVMR now use secure certificates to keep the traffic between your computer and the website from being intercepted.

Also, when you login to the Zen Tech site, you have to prove you’re not a robot by completing the captcha challenge. This feature is provided by Google and has changed recently, version 1 is no longer available. You now have to use version 2, which involves identifying objects in photographs. You have to click on all photos that have cars in them, for instance. With this version of the captcha it’s hard to know if you’ve clicked the right photos and it keeps sending you more photos to identify. <I hate it, and it’s the reason I was so late in posting the last show notes. It may not be the last time that happens.>

Paul went on to say that once you pass the captcha test, a cookie is set on your computer, which is then valid on other websites that use version 2 to let you pass thru without the hassle of the captcha. He said that’s the reason they made it so hard. If you think you’re solving the captcha wrong, chances are it’s ok and that the system is just putting you thru the paces.

The captcha system Paul uses for the Zen Tech site is a plugin for WordPress, which runs the site. The plugin is called Google Recaptcha by BestWebSoft. There are several captcha systems he could have chosen and one of the things that helps him decide is how many time has it been downloaded. He’ll favor the plugin that’s been downloaded most often. Obviously, he also checks for compatibility for the version of WordPress he’s using — there were several in the last few months.

Paul started to talk about compiling site maps “so that Google will know where our site was”. The popular pluging for that is ‘Yoast’. It’s free and it analyzes the site to see how palatable it is for search engines like Google. It sounded like he didn’t say all that he wanted when he suddenly changed the subject to thanking supporters of KVMR.

Glenn continued by thanking the contributors and underwriters and he thanked the members who support KVMR thru their donations. <If you’d like to become a member, you can call the station at 530-265-9073 or go to kvmr.org>

The guys noted the passing of Stephen Hawking, a famous mathematical physicist.
<A brief history of Stephen Hawking’s discoveries.
Stephen Hawking: pop culture icon>

Glenn has been educating himself in using Word and Excel recently. He said there’s a lot more to Excel than just spreadsheets. One of his projects is creating name badges. He found that the border color can change depending on what is entered in certain fields. He was using the 2013 version of Excel but thought that earlier versions might be capable of the same thing.

Paul mentioned the possibility of getting malicious code when someone gives you a Word <or Excel> document. The document may have macros (mini programs), which enhance the functionality but can be made to do strange things. Your Excel application should warn you that there are macros in the document you’re about to open, and ask you if the macros are to be executed.

The macros are in English and Paul said you can look thru them to see if the words like ‘delete’ are present or a website is mentioned, which might hint at something malicious. Glenn said the main Excel file has the extension .xlsx and the macro files are .xlsm. Otherwise, just be aware where you get your document and what it’s supposed to be doing.

A long time ago there was defect in Windows that would allow code to be executed if you clicked on a .gif file — “the picture viewer could be tricked into overrunning the code.” The .gif picture file could be longer than what it was meant to be and code could be stuck on the end, which would then cause what was called “arbitrary code execution”. Adobe .pdf files have had a similar problem. And the worst of all have been .swf, Shock Wave Flash files, which exploit defects in the Flash player.

Next, Paul talked about crytocurrency viruses. A lot of computer processing is needed to manage cryptocurrency like Bitcoin. So someone came up with the idea of using the computers you or I have to help out — to distribute the processing out to the computers on the internet. The virus will use your computer’s spare time to do a small fraction of the processing that would otherwise require a huge array of computers. Paul reasoned that it shouldn’t use more then 50% of your computer’s time, otherwise you’ll suspect something’s going on.

Paul found out how such a virus can get on your computer. It appears that some Windows machines still have a flaw despite all of the recent patching. The flaw is called Eternal Blue that exists in the “networking stack”. It was first developed by the NSA and is now used by the cryptocurrency miners and also by the ransomware Wannacry virus.

Microsoft came out with a patch for Eternal Blue. If you have Windows XP and are keeping it off the internet for security reasons, you can download the patch to a flash drive and then plug the flash drive into the XP machine to update it. You should also have an updated anti-virus program to protect it from compromised flash drives.
<Further info from Microsoft.>

Glenn invited to call with their questions and comments at 530-265-9555. And they can send email to zen at kvmr dot org.

Paul has a Kindle app for his Android tablet for reading books and such. And though it can read .pdf files, it’s pretty rudimentary. So he discovered a free app called Calibre, which is an ebook reader and converter that runs on a PC or Mac. It can convert a .pdf file into a Word document, which you can then edit. In fact it can convert between 20 different formats, including..mobi, the native format for the Kindle.

Calibre has a bit of a learning curve and the interface is clunky, but it’s a far better program than he first thought. It also lets you subscribe to various free magazines, news sources, periodicals and documents. And it comes with a list of websites where you can get all of this free stuff

Caroline called. She has an iPhone 4 and keeps getting the error message “Can not get mail. The mail server ‘IMAP Gmail.com’ is not responding. Verify that you have entered the correct account info into mail settings.”
– Paul said the email app on your old phone is out of date for what Gmail expects. Google has started imposing a a more stringent authorization scheme called OAUTH.
– Use the Safari browser to go to Gmail and get your mail. Though eventually Safari will become out of date and fail to access the mail.
– It’s not obvious, but there is a setting in Gmail to permit less secure authentication. But then you’ll get warnings saying something like ‘less secure applications are accessing your account’ <referring to your email app>.
– Get a new iPhone.
– Gmail is the least hacked mail service and this problem is the price you ‘pay’ for more security.

Last Updated 12:59 AM 3-15-2018

Feb 28, 2018

Feb - 28 2018 | no comments | By


Ryan is In the Studio Today!




Notifications of new show notes and edits are tweeted at: twitter.com/ddhart.
– They’re tagged with #Zentech.
– When what’s said is unclear to me (or I’m unfamiliar with a topic) I tend to quote (” “) verbatim.
– Editor’s comments are delimited by < >

For a couple of months, the audio of today’s show is here. Recent shows are here.

The intro & outro music was by Pentatonix.


Both Paul and Glenn were in the studio today.


Glenn was a bit late coming into the studio because he had a problem with his Canon MX922 printer, He didn’t put the ink cartridge in quite right and it got stuck. He had to call tech support to get it resolved. The printer was under warranty, but he didn’t even have to verify that with them.

The rest of the show was an interview with Ryan Trauntvein who is part of the Github enterprise and he told us what it’s all about. Git is the guts of Github and git is a derogatory word in England that refers to someone who makes stupid mistakes. Github is a website where you can collaboratively work out your mistakes, Paul quipped.

Ryan said Git is a version control system and Github is a host <the website> for version control using Git. It’s a way for 2 or more people working on something, like writing a computer program, to prevent changes made by one person from being lost when another person makes changes to another version of that program.

The old way of doing this is to allow only one person to “check out” a file and work on it, thereby not allowing anyone else to work on it until it’s checked back in. With Git each person can work on their own copy at the same time and, when the file is sent back up to the server, the choice is made about how to merge the two (or more) versions. It’s not just for writing software, it can be generalized for use on many collaborative projects.

For instance, in writing a novel, if 2 people edited a paragraph, Git will highlight changes made by each editor while noting who made which changes. It will then be up to the editors (or project managers) to decide which changes to keep or delete.

Linus Torvalds, creator of Linux, also created Git. When Linux was created, the version control system he used was called Bit Keeper and it was proprietary, so he created Git.

You can create a free account at Github. You don’t need to download anything to your computer, it can be run from their webpage using their editor. If for instance you want to work on a novel, you create a project on the website and proceed to create sections for your chapters. Other collaborators on your project will than have to first create an account on Github and be invited to contribute to your novel. Alternatively, there are desktop applications available that can be used for collaboration. Collaborators can be restricted to work on just a certain portion of the project, like just a particular chapter of a novel.

Many of the projects on Github are open source. Of those let you only look at the contents of the project. Some, however, let you make changes without being formally invited to the project. The changes you make will create a ‘fork’ of the original project and be kept separate from it.

Later, your fork of a project can be submitted to the original project with a ‘poll request’. Those running the original project can then look at the changes you’ve made and make suggestions on how you can improve your fork. Eventually, your fork may be merged with the original project.

Paul mentioned another open source repository called Source Forge.

Github is a for-profit enterprise. If you are creating a non-profit project, Github is free to use, as long as you keep it open to the public. If you want to close it to the public, then you’ll have to pay to use Github.

Paul asked Ryan if musicians could use Github to work on their music. There are a number of music projects, Ryan said. One is called Sonic Pie. Images & 3-D printing models also have their own projects

Paul then asked if Github keeps track of all the changes made on a project. Ryan said there are different ways to go back and compare parts of a project as they’ve changed over time.

A project with plain text is easy for Github to keep track of, but what if the collaborators use something like Microsoft Word to create the content? Ryan said that Github can only display a limited number of formats online, and the rest has to be sent to the collaborators for display on their own computers.

On a related topic, Paul mentioned the meetup event that happened yesterday at Quietech Associates in Grass Valley called the Nevada County Free Code Camp. They have a Facebook group. And you can find them on Github if you search for Nevada County Free Code Camp, where you can see their repository.

There are “mini modules” thru which you can progress when learning programming at Free Code Camp, which is a global organization. There are 3 areas of certification: front-end web development, data visualization and back-end development. The entire free learning experience is covered in 400.

The certifications offered are for skills that are widely used in industry. There are thousands of testimonials from people who’ve gotten jobs after going thru the program.

Paul wondered where the big demand for jobs is, Ryan said there’s a big demand for documentation and, perhaps, back-end development (cloud services).

Glenn said that if you go to freecodecamp.org and click on ‘map’ in the upper right-hand corner, it lists the various projects.

Paul asked what sort of [Github] projects there are for non-profit organizations. Ryan thought that modernizing what they already do would be helpful — things like data visualization or mobile apps. And many organizations need a membership database, Paul added.

Glenn asked how one should prepare themselves to attend a Free Code Camp meetup. Ryan said there’s usually an initial short talk on something like a coding topic or how a company has been using a software product. Then there’s a freeform class where you can immediately start learning and where people can help you thru challenges. <Bring your laptop was implied.>

Paul said you can find various meetups in your area by going the meetup.com and search on your geographic location.

Every Thursday there’s a meeting of Coffee and Code which is put on by the Nevada County Hackers meetup group, a spin-off of Free Code Camp. It’s more of a heads-down working session.

Glenn asked if Free Code Camp is for people who want to develop mobile apps. Ryan wasn’t sure but thought there are a number of people who have that interest. He thought that’s something that will be addressed in the future.

On the other hand, a lot of the design done at Free Code Camp is mobile friendly. The term for that is ‘responsive design‘. This is where the website will display differently based on the device you’re using — it will to fit better if it determines you’re using a small screen. The Zen Tech web site is like that. WordPress, the content management system it uses, makes it display properly.

If you’d like to program apps for the iPhone and iPad you can get the free Xcode developer platform and run it on a Mac, Paul said. It also lets you collaborate on a program with Github using the ‘check out’ ‘check in’ method. If you then want to put your completed app into the Apple App Store, it will cost you $100.

The best way to reach Ryan…
– On the meetup website.
– On Facebook
– On a Github-related chat site called Gitter.
– Or come to one of the meetups.
<Other info about him…
At Github, here and with his picture here.
– On Twitter>

Listeners were invited to write to the guys with questions or comments, even those they’d like to be forwarded to Ryan: zen at kvmr dot org

Paul closed with this thought: Education is when you learn more and more about less and less until you know everything in the world about nothing at all.

Last Updated 4:25 PM 3-1-2018

Feb 14, 2018

Feb - 14 2018 | no comments | By

Notifications of new show notes and edits are tweeted at: twitter.com/ddhart.
– They’re tagged with #Zentech.
– When what’s said is unclear to me (or I’m unfamiliar with a topic) I tend to quote (” “) verbatim.
– Editor’s comments are delimited by < >

For a couple of months, the audio of today’s show is here. Recent shows are here.

The intro music was by Pentatonix.


Both Glenn and Paul were in the studio today.


Glenn thanked listeners & supporters of KVMR. <If you’d like to become a member, you can call the station at 530-265-9073 or go to kvmr.org.>

Glenn was given a 9″ tablet made by Digital Reins recently. It runs the Kit Kat operating system — version 4.2.2 <but their webpage says it 4.4>. He said it’s kind of slow and that he might add an external SD memory card (up to 32gig) to it. You can get it at Amazon for about $100.
<This might be the tablet>

He said it sometimes displays the message “cannot start android.google.(something) upgrade”. It seem to be trying to do something in the background, but can’t.

Paul said people should keep in mind that products you buy to experiment or have fun with may not be adequate for your need to get work done. He’s cautious about buying new off-brand products. Brand-name products that are similar can cost twice as much, but that doesn’t mean you get twice the performance.

There are various benchmarks <apps> you can get to check network performance. video rendering, etc.

Off-brand manufacturers get permission from Google to use the Android operating system without having to pay a royalty. Google expects to make up for it when people come to Google for resources and products — apps, email, media, etc. That will give Google the opportunity to gather information about the users.

You can learn more about your tablet by going to Settings -> About. Toward the top you’ll see the model number. Glenn’s tablet shows it’s model m920. Paul said the company may have put the firmware made for a different model with the same chipset into this tablet. He speculated that might be the reason Glenn was getting the error message.

Paul went on to say you can upgrade such tablets. There is a hacker community that will offer you recompiled images <of the operating system> that you can put on the flash card. You can then upgrade the OS from the flash card.

The cheaper tablets have a more reflective display because they don’t use an anti-glare coating, Paul noted. And several years ago cheap tablets would have a resistive display, which is less responsive to finger movement. This type of display is what you’ll find on GPS devices. The preferred type is capacitive display.

Taking tablets apart can be tricky. Paul bought a tool that looks like a pair of plastic tongs with suckers on them. You’re supposed to wet the suckers and put one on the front and one on the back of the tablet and squeeze the tool. If you patiently exert a fixed amount of force, eventually the glue will give way and the two halves of the tablet will come apart. You can speed up the process by using a hot air gun or hair drier but be careful not to apply too much heat. The glue will start to loosen at about 160 degrees F.

If you venture into upgrading your tablet, you’ll notice that newer versions of Android don’t demand much more from the hardware. The current version of Android is 7. And you shouldn’t have much trouble of installing most of the common apps on an older tablet.

Paul said most of the apps you would need would be able to run on version 4.2, so why would you want to upgrade? One reason is better advantage can be taken of the hardware resources. For example, Google made version 7.1 more responsive to touch.

Talk turned to cord cutting. Until recently, the content you got over the internet tended to be prerecorded, like Youtube. Now there’s Google Live, which lets you watch live TV relays of sports, political events, news broadcasts, etc.
<Maybe its Youtube TV
Engadget article
The app for it.>

Glenn’s experience was that he watched only a small fraction of what was available thru his cable subscription. Then he got the least expensive package from Direct TV called the Family Pack, which gave him something like 28 or 48 channels. But it was still kind of pricey. He’s intrigued by the internet channels but thinks the cost can still add up by the time you subscribe to enough services to meet your viewing desires. Glenn’s had some success bargaining with cable companies for better rates by claiming he can’t afford to pay more than the introductory rate he started with, and then settle for a marginal increase in his fee.

Steve Baker entered the studio to give an update on the shooting in a Florida high school. There are a number of fatalities — one source said 14 dead. The gunman is in custody.

Paul said there is feature in Google Maps to find the distance between 2 points in a straight line (as the crow flies) rather than driving distance. He thought the feature is available on the mobile app for Google Maps, too.

If you use your computer to go to Google Maps, you can discover other features you might not have been aware of. Google Earth, Street View are now integrated into Google Maps.

In the upper left corner of Street View is an option to see a particular street view from the past — different instances of that view photographed over time. Metro areas get photographed more often.

Glenn reminded listeners that they can call in with their questions &amp; comments: 530-265-9555.

Glenn was impressed by the scenery of the opening ceremony from the Olympics and recommended listeners check out the recorded videos, wherever they can be found on the internet — maybe on Youtube.

Paul thought people might like to know how to watch the Olympics online for free. If you signed up at Google Live, you can watch for free during the 30-day trial period. After that it’s a $35/mo subscription. Otherwise, he hasn’t found any good options to watch the Olympics for free.

There was some chitchat about Elon Musk & Space X. There was mention of the recent launch of the Falcon Heavy and how the boosters do a soft landing on a barge.
<Watch video of the launch and landings if you missed it live earlier, or if you just want to watch a rerun.>

Douglas called. A mouse ate the fuel injection wires in his car. He thought a car would have to be parked for a long time before mice can get to it. He uses his car often and the mice needed less than 13 hours to do the damage. It cost $1500 to $2000 in repairs because the engine had to be partially disassembled to get to the wires. When the tow truck came for the car, the driver said <maybe jokingly> that he should put a bar of Irish Spring under the hood because the smell will keep them away. It didn’t help that in 2012 the auto makers complied with European laws that demanded the wire insulation be biodegradable and, perhaps more attractive to mice.

Glenn related the story of how Ivory soap was made to float. One of the vat tenders accidentally let it go too long and it got too much air in it. First thought to be an error, consumers were impressed.

Paul’s humorous contribution was about a workman at a factory that made glasses who fell into a vat of molten glass. The news headlines: glass worker makes a spectacle of himself.

Douglas also said that mint oil and the sonic devices you plug into a wall socket also keep mice away.

Paul mentioned a local company called Sonic Technology that discovered a way to modulate ultra sound in such a way that it drives rodents away and they don’t get used to it.

Adding to what was said before, Paul said you don’t have to drop your cable TV subscription before you experiment with the alternatives. You can get a Roku box for an “Android TV unit”, which he just bought for himself for $28. <He didn’t give a model number of the Roku.>

Robin called. She thought Douglas said menthol would keep the mice away. Glenn clarified by saying it was mint oil.

She also asked about where to have her broken computer looked at.
– Locally there’s Rod’s Computers.
– She was asked to email the guys to get a reply for other repair shops.
– Call the shop in advance to see if there’s a charge to determine if it’s worth repairing. Understandably, shops generally have a service minimum.
– If you want to recycle it, that’s usually free. Take the hard drive out first to protect your personal info. The best way to get rid of it is to take a hammer to it <or keep the drive & put it into your next computer.>

Last Updated 12:47 AM 2-15-2018

Jan 31, 2018

Jan - 31 2018 | no comments | By

A lost dog notice…
A male Queensland Heeler named Orion last seen in the Dobbins and Challenge area without a collar. If you have info, call Adam at 530-675-9403



Notifications of new show notes and edits are tweeted at: twitter.com/ddhart.
– They’re tagged with #Zentech.
– When what’s said is unclear to me (or I’m unfamiliar with a topic) I tend to quote (” “) verbatim.
– Editor’s comments are delimited by < >

For a couple of months, the audio of today’s show is here. Recent shows are here.

The intro & outro music was by Pentatonix.


Paul was in the studio today. Glenn called in.


At the start, KVMR’s program director Steve Baker talked with Pascal of yubanet.com about horrific auto accident on highway 20.

A tow truck and a fuel tanker had a head-on collision near the junction of highway 20 and I80. At the time of this announcement, highway 20 was closed between Nevada City and the junction, except for citizens of Cascade Shores & the town of Washington. There’s no estimated time when the highway will reopen. Pascal speculated that it will be closed overnight. You can get updates at yubanet.com.

Paul thought the technology that went into the making of the Pentatonix video showcased their talent well and paraphrased a quote by saying ‘the best technology is indistinguishable from magic’. He pointed listeners to wikiquote.com for the source of his quotes.

Glenn invited listeners to write with their questions and comments to zen at kvmr dot org

The guys commented about the weather. Glenn said that, unlike last year, there hasn’t been as much precipitation and that we may have an early spring.

Paul shared with us the source for the news he reads. In the US there’s therecord.com and from the UK it’s therecord.co.uk <this doesn’t go anywhere, maybe he meant the Daily Record, I dunno.> Both sites are run by the same people. He said the UK site gives Eurocentric news and the US site gives tongue-in-cheek and unusual tech news.

Looking back at the show notes from last week, Paul continued talking about the Meltdown & Spectre flaws. He said that there has been patch by Microsoft to disable a previous patch for the problem, when it was determined that it caused some machines running Windows 7, 8.1 and 10 to reboot unexpectedly.

Paul said he’s seen the rebooting problem affecting a couple of his clients. He had to be quick on the keyboard to get into safe mode on those machines. And even then, there was a problem because the faulty patch expressed itself, even in safe mode. “You have to get to the point where it says go back to last known good configuration,” he said. He didn’t go into details.

Don’t worry too much about it, Paul said. Just be cautious of popup windows <in your browser> telling you something like ‘click here to fix your problem,’ much of the time they’re bogus.
<Though mentioned during the last show (1-24-18), there’s much more about Meltdown and Spectre in the 1-10-18 show notes.>

On 1-22-18 Intel told customers not to install one of the security updates that it had issued, as the patch was causing even more problems. He didn’t elaborate.

Paul noted that the Mac operating system had name change. It used to be OSX and is now called Apple OS. He said he religiously does the recommended Apple updates and recently updated to version 10.13.3 of High Sierra. He then noticed that 2 smaller fixes were issued, but they didn’t change the version number. It’s the first time he’s seen that happen. Everything seems to be working ok.

When Apple sends out Mac updates, not everybody gets them at once, that would be a strain on Apple’s servers. Doing updates this way also makes it easier to catch and correct a bad update.

Paul said software goes thru different stages of rollout — alpha release, beta release and release candidates (RC1, RC2…). Microsoft no longer releases service packs for their Windows 10. They want to make Windows 10 the last Windows operating system. But what goes on under the hood is a different story. There have been “2 or 3 very substantial rollouts of large chunks of software which performed an under-the-hood upgrade.” He compared it to taking out the engine and giving you a new engine, while you weren’t looking.

The Sep 2017 rollout of the Windows 10 Creator’s Edition caused some people to suffer from machines that “blacked out, continually rebooted or didn’t go anywhere”. Paul speculated that a fix for the Intel bug was part of Creator’s Edition and that it caused the problem.

Paul pointed out that these days it’s far easier to find information and easier to go wrong. Right and wrong are concepts that can vary in meaning. There’s wrong reasoning, wrong information and wrong outcomes. You can get to the right conclusion with the wrong reasoning, it happens in science. You can argue in a faulty way, which are fallacies in logic, in order to convince other people.

On Facebook, people can be convinced of the truth of some news depending on whether they like it or not. I think what Paul was getting at is don’t be quickly swayed by emotions, things that are true have a way of sticking around.

Paul talked about an elderly friend who tried to find the Geek Squad, the tech team from Best Buy, on Google. He called the number he thought belonged to them and they seemed to pass themselves off convincingly. He ended up sending them $700 for subscription for technical service. Bottom line is being careful about search results. Scammers have ways to get their ads placed high in the search results. Be careful what personal information you provide when you’re not absolutely sure they are legit. Be aware that calling an 800 number will reveal your phone number even if you have number blocking.

Glenn said Marilyn wrote in asking about which security protocol she should choose for her internet router. She asked about WEP, WPA and WPA2. Paul said these protocols are used when you connect to wireless networks. They encrypt user name, password and the data that is sent/received between the computer and a router.

The oldest is WEP (Wired Equivalency Protocol). It would use a key that came from a limited set of characters — 1 thru 9 and a,b,c,d. It’s generally not used anymore.

Then came the more secure WPA (Wifi Protected Access) and later WPA2. Paul suggested using WPA2. Go into your router and set it to use WPA2, at least. Also get the latest firmware upgrade for your router.

WEP is insecure and the data that is transferred between computer and router can be spied on. The data that travels between your router and a website can’t be looked at to any degree of usefulness because it is encrypted. <I think he meant to say that this is true if the URL in the address bar begins with https:, not http:> If you’re visiting your bank, a hacker won’t see the data going thru your router.

But some stuff is visible. “Not least is the fact that the second flaw can redirect the website. So when you think you’re typing in mynevadacounty.com you may actually be going to hackersdomain.net, hidden to you and shown on the screen the correct way”. <It wasn’t clear what he meant by ‘second flaw’, maybe the Spectre flaw, and that it may display what you type in the address bar but take you somewhere else> What to do about it? Upgrade the firmware or don’t do anything that’s really sensitive over wireless.

Even very basic sites are starting to use secure certificates. For example, if you go to speedof.me, you’re directed to a secure website. This a site to test the speed of your internet connection, not one where you’ll be typing in personal info, but it’s made secure nonetheless. “However, you may type things in there that could be useful to somebody…Enough information is triggered by visiting the website…that it could be useful to somebody intercepting it”.

If you have a WordPress site or a site with your own domain name, it’s suggested you get a secure certificate. It used to be a lengthy process but is now free. You can get a low-grade SSL certificate at letsencrypt.org. They will give you a certificate but they won’t validate who you say you are. It just means the traffic between you and a website will be secure even if your “router is flawed, even if you have this other defect” (Spectre).

Paul backtracked to say more about Spectre. “One of the defects in Spectre will allow people to see what happens on your machine after encrypted connections are going on.” Spectre doesn’t care about your router or secure websites, “at some point on your screen something readable was visible, which was the balance in your bank account, your account number or any of that stuff. If you could see it on your screen, it could be grabbed out of cache memory and subverted.” <Spectre and a secure connection are separate issues, as I understand it.>

Paul said he’ll post pictures taken with his quadcopter from Sugarloaf just north of Nevada City.

Saxon from Fair Oaks called. He has a 5 year old Mac Book Pro with a 1 terabyte SSD drive that he put in it. Since it’s 5 years old, he wanted to know when should he start thinking about replacing it. He has a thunderbolt display and runs CAD (computer aided design) programs and the machine seems get warmer than normal. Paul suggested he use compress air under 60 pounds or can of compressed air to blow it out. Find the vent underneath the back hinge. Unhinge the cover and look for the vent.

There are a series of keystrokes, which Paul couldn’t remember, to reset the system management console. This is an Intel chip that controls the keyboard lights, fan and battery charging. For more info, google the words: reset smc. It doesn’t hurt to reset it even if there’s nothing wrong with it.

Check the condition of the SSD drive. The maker of the SSD will usually give you a custom diagnostic to see what shape it’s in. This is different than a hard drive diagnostic. The memory cells of the SSD degrade over time.

Last Updated 11:47 PM 1-31-2018


Jan 24, 2018

Jan - 24 2018 | no comments | By

Notifications of new show notes and edits are tweeted at: twitter.com/ddhart.
– They’re tagged with #Zentech.
– When what’s said is unclear to me (or I’m unfamiliar with a topic) I tend to quote (” “) verbatim.
– Editor’s comments are delimited by < >

For a couple of months, the audio of today’s show is here. Recent shows are here.>


The intro & outro music was by Pentatonix.


NOTE: There is another Zen Tech show scheduled next Wednesday, 1-31-18


Both Paul and Glenn were in the studio today


Paul alerted listeners to below freezing temperatures coming probably tomorrow to the local area. <There was likely something about it in the Calendar segment, which I didn’t listen to.>

Paul thought that midwinter day is Feb 4. The equinox & solstice are the beginning & end of a season, he went on to say. The midwinter point is between the equinox & solstice — 6 weeks in from the beginning of winter and 6 weeks before the beginning of spring. It’s for astronomical reasons that 6 weeks after the “longest day” (around Dec 21) we experience our coldest temperatures, he said. <I guess he meant the longest night — the Winter solstice. More about this in the 11-8-17 show notes.>

The Romans disliked this time of the year so much that they made February the shortest month just to get it over with, he quipped.

We forget what it’s like to drive on icy & wet roads and need to be reminded to be careful, he cautioned. Paul thinks weather warnings and forecasts have become more undependable. Glenn seemed to concur and thought a change in weather modeling might be to blame.

While playing the Pentatonix intro music, Paul noted that there is a change in volume about 15 sec from the start. In the KVMR studio they have to compensate for this. The free software they use is called Audacity.

In Audacity it’s the ‘normalizing’ function that’s used. <But see below.> They highlight the whole waveform and go to ‘tools’ -> ‘normalize’. That will bring the highest & lowest volume levels closer together.

Glenn reminded listeners that they can call in with their questions & comments: 530-265-9555.

Paul doesn’t like to upgrade just for the sake of upgrading. It seems to cause “stuff” not to work like it used to, as in the case of iTunes. He doesn’t like the changes made to iTunes and has turned sour on the program.

A local lady with a Mac of 2011 or 2012 vintage, which came with Mac OS 10.6, got a warning that she can no longer use Dropbox, an internet based file storage/sharing site, with out upgrading the Dropbox software. But the new software wouldn’t install because her operating system (10.6) was too old. Hence a need to upgrade the operating system first.

The latest OS version is 10.13 (High Sierra) but you can’t go directly from 10.6 to 10.13. If you have 10.7 or 10.8 you can do it. Click at the top and it gives you the choice to upgrade to High Sierra. <Be careful to check that your older software will run on 10.13 before upgrading.>

So, if you have 10.6 you have to upgrade to 10.7 or 10.8 first. Open the App Store, which is present in 10.6 and do a search for OS 10.8. Paul seemed to say that sometimes you may not be permitted to install it and it will usually tell you why. The good news is that all versions since 10.6 or 10.7 are essentially free. The other thing you can do is a Google search for: upgrade 10.6 to 10.13. But Apple will sometimes change the procedure, so the information you find may be out of date.

Paul thought that Glenn had something to say about his Mac Mini. He thought it was something intriguing, apart from the fact that later versions of the Mini can’t have their memory upgraded. Glenn had trouble remembering, too. Then he brought up the problems he was having synching his Mac Mini, iPad and iPhone. iCloud is supposed to be smart enough to do that, but not in Glenn’s case. Glenn decided to leave iCloud and do his backups to the Mini instead. Paul said doing this gives you more control and is faster than sending data over the internet.

Around the time that Sierra (10.12) came out for the Mac, a feature called iCloud Drive was added to iCloud. It lets you synch your desktop & documents out to the cloud. If you turn that feature on, “the usage of your iCloud will go thru the roof” and you could get a warning that you’re running out of space, Paul said. Also, it will take forever copying out stuff from your desktop and your documents folders” to iCloud. And surprisingly, your documents folder will appear empty, but don’t panic. In its place it will give you iCloud access under a folder called ‘All Files’.

In his case, when Paul tried to turn off iCloud Drive he got the message “if you turn off iCloud, all copies of your documents will be removed from this machine”. It also said “would you like to download a copy before you disconnect iCloud?” The problem with that is you may have 100 gigs or more of data that’s been stored in the cloud and it would take long time to download. The lesson seems to be to think these things out before you accept a service like iCloud Drive.

If you choose to retrieve your files, iCloud will take it’s own sweet time to send them episodically. You can check the progress by going to Finder (on the left) and clicking the animated clockwork dial. It’s his personal feeling that it’s not worth using iCloud Drive. You’re better off using Google Drive or maybe even Dropbox where you have more control and file transfers go at full speed.

Bruce called. He has the older iMac Light with OS 10.6.8. It is a 32bit machine and he’s heard that it can’t be upgraded beyond OS 10.6.8, is it true? Paul said that is true. About 10 years ago Apple went from Power PC to the Intel chip. In 2007 they went to the Intel Core Duo. Later they started using Core 2 Duo, which can take an upgrade to a later version of the OS. The simple thing is to just try the upgrade and it will tell you if it can’t be done.

Also, Bruce recently acquired an iPad and wanted to know if there’s a way to browse the file structure. Paul said there is a way to see some of the file, but Apple doesn’t want you doing it. Paul found the app called Iexplorer to help you. But he said it’s a disappointing experience — you can’t “get to the guts of it”, only the first few layers. If you back up the iPad to a Mac, you can then browse some of the files but a lot of them are encrypted or useless.

Bruce would like to save some critical configuration files that he might want to restore later. Paul said there would be problems doing that because the Apple device keeps tight control and will defeat your efforts of moving files around.

Bruce related his experience with the normalize function in Audacity, talked about earlier. He said other than removing the DC offset, it proportionally increases everything up to about 100% from the maximum that you set it to, but it doesn’t level highs and lows, as Paul implied above. Instead, if you have a burst of loud sound, highlight that part of the audio and then use the ‘amplify’ function to reduce it.

Kay called. A friend of hers wants to make a portfolio using the program Word Writer. She doesn’t know what type of computer the friend is using, possibly a Mac. Paul looked up Word Writer and came up with many products by that name. He also found zoho.com/writer that allows you to do word processing online. <There are others, like Google Docs> Kay asked about making slides and Paul suggested she use, and may already have, Powerpoint, if she’s using a PC or Pages on the Mac.

Don called. He wondered of anyone had run Meltdown exploit code on their own machines. He’s done it on his machine that has a Pentium 4 processor (2005 vintage) and had a very low success rate (the exploit failed most of the time 1/200 to 1/2000). On a more recent Intel i5 CPU it was successful every time. He speculated that it’s because a level 3 processor cache is more exploitable. <There’s much more about Meltdown and Spectre in the 1-10-18 show notes.>

He gave a link to the software he used. It will check if your computer is vulnerable and see how well the patches you install are protecting it. Don’s understanding is that the AMD processor is not vulnerable to Meltdown, only to Spectre. Paul warned us not to use this exploit program on a work computer (it may be illegal) and be wary of doing it on your home computer.
<I think this is the software Don used>

Don said he only uses the Pentium machine for surfing the internet, not his newer machine. Paul said the internet doesn’t require much horsepower, even very old computers will work fine and be more secure running Linux.

Last Updated 12:14 AM 1-25-2018

– They’re tagged with #Zentech./p

Jan 10, 2018

Jan - 10 2018 | no comments | By

Meltdown! FAQ

Intel CPU Defects


Button Cells like the CR2016: 3.6v

Type Numbers for Bulbs Batteries…

Oil Filters



Notifications of new show notes and edits are tweeted at: twitter.com/ddhart.
– They’re tagged with #Zentech.
– When what’s said is unclear to me (or I’m unfamiliar with a topic) I tend to quote (” “) verbatim.
– Editor’s comments are delimited by < >

For a couple of months, the audio of today’s show is here. Recent shows are here.

The intro & outro music was by Pentatonix.


Both Glenn and Paul were in the studio today


Glenn took his first Lyft ride this past weekend. It was from the Golden One Center where he saw a basketball game. He said watching the megatron display was almost better than watching the game directly, because of all the camera angles.

He said the Golden One Center has an area where you can plug in your mobile device to get it charged. And they have an app that you can use order pizza <as well as do other things>.

Glenn wasn’t sure of the range for the ticket prices for a basketball game. He guessed they’re from about $40 to $300. For the seats he was in, a pair of season tickets cost “only” $17,000 and the cheapest are $6700 a pair.

The Lyft driver who served Glenn had a hearing impairment and the guys speculated about how the drivers were covered by insurance. Apparently, Uber does cover its drivers.

A couple of weeks ago Glenn started using the app called Waze, an alternative to Google Maps. Though it’s considered a superior mapping system to others, he didn’t like how it had control of his car’s stereo, via Bluetooth, even when it wasn’t issuing directions — nothing else would play thru the stereo. There is a setting to keep it from using the car’s stereo at all, but that’s how Glenn wanted it to work. For a workaround, he noticed that the Lyft drivers who use Waze will have their phones play music thru the car using Bluethooth which will relinquish control to Waze only when Waze has something to say. He likes, and apparently uses, Google Maps instead.

Paul explained that, as with other map/traffic apps, Waze automatically submits speed <and location> of its users to its central servers, which then aggregates the data to warn drivers of congestion, for instance. Unlike the other apps, Waze lets the users report things like a crash or stop & go traffic on an on ramp.

Paul noted the law that came into effect about a year ago regarding using a device while driving. Though discouraged, a concession was made to allow you to activate a function if it only requires one button press and you’re not actually holding the digital device. Glenn thought there were further restrictions — it’s only for a phone call or to use a map.

Paul thought using Siri by voice would be ok while driving. Glenn said he finds Siri confusing to use in the car. He tried to use it recently to find a gas station and asked Siri for an Arco AM/PM, but Siri couldn’t determine what he was asking for. He switched over to Google Maps, which not only showed nearby stations but also gave the gas prices. Paul said Google seems to be adding more details to their maps every time they update the app.

Gordon called to ask about the best way to backup his PC computer. If you have a network at home you can add network access storage like the Western Digital My Book Live, Paul’s favorite. 2 or 3 terabytes of storage is about $149, The backup software that comes with it is not great, but not bad. The drive works with Macs too, and looks like a Time Capsule to a Mac. Check Youtube for instructional videos to help you set it up or at least give you an idea of difficulties you might encounter.

Gordon expressed concern that the data will be vulnerable to a catastrophe like a fire or flood at his home. Paul said these threats exist but, on the other hand, the data transfer speeds are thousands of times faster than backing up to the internet. A hundred gigabytes will take forever to backup to the internet. The solution is to make a 2nd backup to a portable device, like a USB drive, and physically store it at a remote location.

Backups to the cloud tend to lag behind because they tend to be slow. so you may encounter the problem of not getting them done in a timely manner, Paul said. And keep in mind that uploading can be 10 times slower than downloading, due to the asymmetric nature of the protocol. However, you may be able to get by ok if you have a small number/size of files.

Glenn chimed in suggesting Carbonite for backing up to the internet. He said they have plans for business as well as individuals. He uses Google Drive for document storage and noted that you can synch your files if you install Backup & Synch.
<Google releases Backup and Sync for Mac and Windows>

Gordon said he doesn’t have a lot of data to backup. To find out how much you have, go to the C: drive & right-click on the folder ‘Users’ -> properties to find out how much data there is for all of the users on your machine…that is what you really need to back up. First, you might want to run Ccleaner, which removes all of the extraneous garbage files that you don’t want to backup. <More about Ccleaner in the 12-27-17 show notes.>

Another program the guys have used in the past for backups is Free File Sync. But this one requires more tweaking, Paul said.

Paul talked about the recently reported Meltdown & Spectre faults. They are not viruses but are defects in the CPUs. Modern CPUs process sets of instruction out of order to optimize speed. Some processes are supposed to be hidden from others but there may be a small time frame when they’re not and the data can be exposed. What to do…
– Don’t panic. There haven’t been any exploits seen out “in the wild”, yet.
– Watch out for claims purporting to fix the problem — all you need to do is click this & download that. Be very suspicious of emails with links or attachments unless you’re sure of their origin. Be careful of popups in webpages saying a problem with your computer has been detected.
– Anti-virus programs won’t be especially effective. Only some attempts to exploit these vulnerabilities might be done with a virus.
– Firefox, Chrome and to a lesser extent Internet Explorer browsers have killbits in place where they recognize certain types of things you get thru webpages. <I think the point is to keep your browsers updated.>
– All of the companies are issuing updates. Stay updated. Be sure your updates come from Microsoft itself thru Windows Updates or Apple thru Software Updates.
– Paul thought the problem affects iPhones and those phones with the ARM CPU, too.<Arm CPU, ARM & Spectre>
– The patches are expected to slow down your computer. They will negate the speedup you get with “preemptive look ahead”. In some cases there may be a 25% slowdown, but webpages won’t be affected so much.
– Microsoft didn’t wait until patch Tuesday to issue a patch. Paul speculated that it caused some Windows machines to crash and go into an “infinite boot loop”.

<Spectre and Meltdown Exploits – What You Need to Know:
A followup: Can Malware (Spectre, Meltdown) Spy After Reboot
What You Need to Do Because of Flaws in Computer Chips |
The CPU catastrophe will hit hardest in the cloud— The Verge:
Researchers Discover Two Major Flaws in the World’s Computers>

Glenn thanked those who have become supporting members of KVMR and invited listeners to write with their questions and comments to zen at kvmr dot org.

<The fallout from Apple deliberately slowing down older iPhones as new operating systems come out, has led Apple to offer discounts on battery replacements.> Affecting iPhone SE, iPhone 6 up to the iPhone 10, the battery will be replaced for $29. It’s not expected to begin until later this month & will go to Dec 31 2018. Glenn said he’ll wait until the last minute to get his done.
<Apple iPhone battery replacement program>

Last Updated 2:14 AM 1-11-2018

Dec 27, 2017

Dec - 27 2017 | no comments | By

Strange Minimalist Music from the 1980’s– Electronics.
“O Superman” by Laurie Anderson

Nostalgic? try telehack.com 

and see old BBS style Text Files Here!



Notifications of new show notes and edits are tweeted at: twitter.com/ddhart.
– They’re tagged with #Zentech.
– When what’s said is unclear to me (or I’m unfamiliar with a topic) I tend to quote (” “) verbatim.
– Editor’s comments are delimited by < >

For a couple of months, the audio of today’s show is here. Recent shows are here.

The intro music was by Pentatonix.
The outro music was a “random track” by Brian Eno.


Paul was in the studio. Glenn called in.


Paul played an excerpt of some music from the English musician Lori Anderson. It’s from 1982, which is when he left England permanently. She used an octave divider to process her voice. Her album is being republished, but an analog version was put on Youtube (see the link above) with a link to the digitally cleaned up version that you can buy.
<Lori’s website>

Glenn called in from a location he didn’t expose and started off by telling us about a problem Marilyn has recently encountered. She’s using Windows 10 and when she upgraded the Firefox browser to the latest version (ver 57.0.2), her computer started to run slow.

Paul said Mozilla did a rewrite of Firefox recently and it’s now called Firefox Quantum. Whichever version you’re using, you can do a cleanup by going to Firefox Health Report (or maybe it’s Trouble Shooting Information) in the ‘Help’ menu. From the page that opens, Paul suggested Marilyn choose ‘Refresh Firefox’ in the upper right-hand corner. It saves your bookmarks and some of your settings, dumps everything else and then reloads the bookmarks & settings. In the process, it dumps the addons, which can cause mischief, and you’ll have to reinstall them as needed. It also dumps caches as well as any bits and pieces left over from any previous upgrades. Paul said when you migrate to Firefox Quantum, it automatically triggers a refresh. <More about Quantum in the 11-29-17 show notes.>

If you had been using a 32bit version of Firefox but you have a 64bit computer you’ll be switched to the 64bit version of Firefox when you update to the new version. It appears Mozilla is no longer making the 32bit version but all of the addons work just the same, Paul said.

We should all have more than one browser on our machines, Paul continued. But he hates the Microsoft Edge browser, “it’s horrible”. It’s what comes with Windows 10. However, you can still get the earlier Internet Explorer browser from the Microsoft site. Right-click the button in the lower left of your screen <I think he meant the Start button> and then and use the word ‘Run’ and type in “iexplore” <w/o quotes>. You’ll get version 11 of Internet Explorer.

So, 1) refresh Firefox as explained above, although upgrading to Quantum should have done the refresh. 2) Get Internet Explorer and see if your speed improves using it <indicating Firefox is the problem>.

The other thing you can do is isolate the problem. Is it the machine or is it the traffic from the internet that’s slowing you down. Test your internet speed by using speedof.me. Speedof will wait until a webpage is fully loaded before it gives you the result. If the page doesn’t load, something else is wrong. Speedof is designed to isolate speed problems due to the machine from speed problems with the internet.

The guys went on to talk about Crap Cleaner (Ccleaner). Glenn said he has someone friends with a Windows Media Center PC they use to watch TV and record cable & other media. It started to give a ‘disk is full error’. They talked previously about it being more efficient to have the operating system on a separate partition and a much larger partition (or a separate drive) for your data. In this case, after using Ccleaner, the free space on their C: drive went from about 8Kb to 305 gigabytes free on a 500gig drive. Paul said it’s a tendency with Media Center computers to store a lot of temporary data that needs to be cleaned out.

Ccleaner used to be at ccleaner.com but they are trying to sell you what was once a free version by redirecting you to cleanercloud.com. You can still get the free version by going here. Installing it will put an icon into the system tray in the lower right, but Paul prefers to turn that option off; he prefers to run it on-demand (manually). You can also set it to do the cleanup only when you reboot Windows, but that adds about 60 sec to the boot up time. There are also settings that will keep it from deleting passwords or cookies.
<A version for Android is here>

Paul noted that Ccleaner will tend to ignore files specific to an application. So in Marilyn’s case, she’ll need to do the Firefox refresh and not depend on Ccleaner to do the job.

Since Windows 10 came out, there have been 2 major “patches” or updates. Paul said he’s seen one of the updates shut down Avast Anti-virus, without warning. On another occasion, an update shut down Classicshell, which many people use for a better user interface to Win10 than the default Metro interface. Both programs can be reinstalled, but you may have to download the latest versions.

Paul offered a tip to those who want to install Avast: uncheck everything except ‘file updates’, ‘browser check’ and ‘file protect’. He thinks the other options are not needed and Glenn agreed.

The ‘web protect’ option will look at the site you’re visiting and send the data to their servers and then tell you if the site is safe. Things to remember…
– It takes more time — there’s slow down.
– They make money from the aggregated data collected about your browsing habits. It doesn’t mean more advertising popups, as you might think.
– They don’t *guaranty* a website is not a malicious.

The guys mentioned a couple of sites that are a throwback to earlier days in computing. <See the links at the top.> Telehack is not so much a webpage but looks like a “terminal into a console”, Paul said. It uses Linux to make it look like a main frame computer from the late 1970s — in particular it looks like a operating system known as Galaxy that ran on a PDP 1091 or PDP 11.

One of the things you can do on Telehack is type ‘eliza’ and it will run an old program by that name that’s an early attempt at interactive psychological analysis.

Paul briefly noted that Youtube now has a subscription service called Youtube Red to provide movies.

The other nostalgic website is Textfiles.com. It gives you the experience of old bulletin boards. It allows you to download plain, unembellished ASCII text files.

One of the files Paul ran across at Textfiles is about Phil Katz who, circa 1970s, came up with a file compression program called Pkzip, which improved on the .zip compression scheme.

Listeners were invited to call with their questions and comments at 530-265-9555. And they can send email to zen at kvmr dot org.

Dan from Coloma called. He recently updated his iPhone to IOS 11 and now he notices periodic increases in the data being transferred — on the order of a third of a gigabyte. At other times it can be 2 gigs over the space of 11 minutes. All of this with out doing anything.
– Paul thought it might be updates being done over the cellular connection. You can restrict updates to only using wi-fi and avoid being charged by the phone company. Dan doesn’t have wi-fi at home.
– Paul said the Verizon site has an accounting of when the data is transferred, though it’s 4 to 8 hours after the fact.
– Paul thought it might be because he uses iCloud Photos. Dan said he turned off all of the iCloud stuff. Google Photos can also spontaneously synch up the data.
– Take your phone to a wi-fi hotspot (e.g. a coffee shop) and then do a check for updates to the IOS. The updates are usually big — on the order of 1.8gig. The automatic updates on the iPhone can happen without warning or asking for permission.
– Go to ‘Settings’ -> ‘Mobile’ (or ‘Cellular’) and you’ll see what items are allowed to use the cellular network. Turn off anything you don’t need. While there, you can see how much data is used by each app. And at the bottom, you can “reset statistics” — handy to use at the start of a billing period.
– Dan asked if it might be a virus. Paul said it’s possible but improbable.
– Go to ‘Settings’ -> ‘Personal Hotspot’ and keep it off. Dan checked and his was on. So it’s possible some other device was using the hotspot. In particular, Windows 10 may have been using up a lot of data.
– Dan asked if it’s possible to go back to Windows 7. Paul said Microsoft gives you a month to do that but they don’t really want you to. Dan is stuck with using cellular as a hotspot for his Windows computer — he has no other broadband. Paul suggested he take it to some free wi-fi location to let Windows do its updates.
– Dan has gotten some relief from Verizon. They’ve increased his data cap a couple of times — up to 16gigs/mo. That was recently and he’s waiting to see if that’ll be adequate.
– Check with local companies that can provide an internet connection for your computer using terrestrial wireless — aka wireless isp — so you won’t have to use the phone as a hotspot. Check with Smarter Broadband, for instance.
– Go into Windows 10 and turn off “metered connections” or turn off wi-fi entirely <so it won’t use the phone as a hotspot>.
– Call Adam Brodel of Smarter Broadband for any suggestions he may have, even a competitor, if he can’t provide the service. Glenn did a quick search and wondered if Blaze Wifi might be an option. <I’m not sure I heard “Blaze” correctly.>

Last Updated 1:49 AM 12-28-2017


Dec 13, 2017

Dec - 13 2017 | no comments | By

A Bit about the Blockchain & Bitcoin

Raspberry Pi– Arduino…



Notifications of new show notes and edits are tweeted at: twitter.com/ddhart.
– They’re tagged with #Zentech.
– When what’s said is unclear to me (or I’m unfamiliar with a topic) I tend to quote (” “) verbatim.
– Editor’s comments are delimited by < >

For a couple of months, the audio of today’s show is here. Recent shows are here.

The intro music was by Pentatonix.

The outro music was Fractal Zoom by Brian Eno


Paul was in the studio. Glenn called in from a Starbucks in San Jose.


Paul’s “been up all night” messing around with the Raspberry Pi & Arduino. He thinks they would be a good gift for the teenage nerd in the family.

Newer cars have the ability to display the tire pressure on the dash. Now there are valve caps for older cars that constantly monitor tire pressure and report the data via Bluetooth. One such valve cap is the FOBO System.

Paul also noted that most modern cars have a temperature sensor mounted near the road surface to warn of near freezing conditions and the possibility of road ice. But he wondered if the distraction of watching all of this info being displayed negates the margin of safety provided.

Glenn invited listeners to write with their questions and comments to zen at kvmr dot org.

The most useful in-car system he’s seen for older cars is an Android dashboard. It’s a 6″ diagonal rectangular screen. On more modern cars, you can take out the radio and put the Android dashboard in its place. “The proper size for the original car radio was called 1 Din, which is a German standard for the height of the radio. 2 Din means double height and a 6″ screen will fit in there.” With Android you can add various apps like GPS and speedometer. You can retrofit whole bunch of useful stuff, which is what Paul has done. From what I understand, the Android dashboard can read and display info from external sensors like the tire valve caps.

<I’m not sure this is what he was talking about, but it seems close…
The Complete Guide to Android Auto – Google Maps, voice commands, messaging, and more in your car:
Or this
You no longer have to buy a new car or stereo to use Android Auto>

When you shop for an Android dashboard, pay attention to the exact size, Paul said. Hopefully, the retailer will have the dimensions on their website.

Some years ago, Paul bought himself a digital caliper (LCD caliper) from Harbor Freight in Roseville for $10 to assist in accurately measuring dimensions. As he recalled, the accuracy is claimed to be about 1/3 to 1/4 of a millimeter.

Talk turned to Bitcoin, a type of virtual currency. If you want to trade in Bitcoins you’ll have to use an exchange, similar to using an exchange if you want to convert dollars to yen. One popular licensed broker is Coinbase, but there are others.

People think using Bitcoins allows you to be anonymous. But the anonymity is questionable because in some places, like California, you have to provide personal information to the broker. “Neither the buyer nor the seller nor the transaction can be associated with you, but it can be identified,” Paul said. In other words, in the entire Bitcoin network, a transaction is visible but not necessarily the person who did it. However it is possible to track it back to the broker (Coinbase, for instance).

Paul said people are mortgaging their houses to invest in Bitcoin. Be diligent. It’s a highly speculative market. Glenn chimed in to say that it’s like gambling and is a very risky bet, in his opinion. Paul said he learned from the book titled “Black Swan” that this sort speculation is based entirely on psychology and perception and not at all on statistics or reality.

Paul mentioned that Bitcoin works on a system called a blockchain, which is a ledger or inventory of transactions. He said he’ll put up a link on the Zen Tech site to an animated diagram of how blockchain works.

Paul said he goes to thrift stores occasionally. He picked up a replacement remote control at one place recently because he doesn’t like universal remotes. He said all sorts of tech stuff is showing up at thrift stores. At many stores you can get store credit if you buy a gadget and it doesn’t work. Glenn noted that some thrift stores specialize in certain categories of merchandise.

Paul found a good location for recycled auto parts and it’s in Rancho Cordova. He said to google the words: recycle road rancho cordova. About the only thing you can’t find at these auto dismantlers are air bags, for legal reasons.

Brian called. He just bought an ASUS laptop with Windows 10. It came with a 1 terabyte mechanical hard drive and an empty slot for a second drive. So he bought a 275 gig solid state drive (SSD) to put in it. Now he’s not sure how to get the operating system to run off the SSD and use the original 1 terabyte drive for data.
– The problem is copying a bigger drive to the smaller one.
– It’s possible the software you need transfer the operating system came with the new SSD drive.
– Before you install the 2nd drive, unplug the power and take out the laptops battery.
– Glenn wondered if he could use the ‘restore function’ in Win10 and point it toward the new drive. Paul said it might work but he wasn’t sure. He said to call the computer company.

Buzz, the KVMR engineer, was listening to the show and came into the studio with a suggestion. It’s a method he’s used before. This may not be the only way, but it works. He suggested Clonezilla, which is a low level of Linux that uses a function called ‘dd’ to copy a drive. To copy from a larger to a smaller drive there is an option in Win10 to change the partition size of the drive. You can shrink the partition of the 1 terabyte drive to the same size of the smaller drive. You can even do this with the 2nd drive connected via the USB port, if you don’t have space for a 2nd drive inside the laptop. Google the words: shrink partiton windows 10.
<More about Clonezilla here>

Also, there is software called Easeus Free Partition Magic, Paul said. It’s a bit tricky and he didn’t go into it, but said there are some pitfalls.

Glenn said the Win10 operating system might already be in its own, smaller partition on the 1 terabyte drive. Look under “My Computer” to see what drives you have. You might have a C: drive and a much larger D: drive. And the C: drive will have the operating system. From his experience, Glenn said ASUS has an excellent tech support and suggested calling them. Brian had a look and found there was only 1 partition.

Paul said something he meant to say a few shows ago. If you lose Win10 on your laptop and you have a sticker on the machine or you know Win10 is already registered, you can download Win10 from the internet and burn a CD with it. So if you want to experiment with methods of transferring the OS, there would still be a way of recovering Win10.

The same thing is true for Winows 7 users. Be sure you use the Microsoft site to download it. Microsoft will want you to type in the number (key) on the sticker a.k.a. the COA (certificate of authenticity).

Brian also asked for a local technician that can help him. Paul said there’s Quiet Tech and Roy’s Computers. He asked Brian to send an email and he’ll reply with a list of local techs.

Dan called. <His audio was terrible.> He has a Dell laptop from 1998 that he upgraded to Windows 7. He wondered what using an iPad 2 is like. The audio was so bad Paul had to end the conversation. Glenn asked Dan to write in with his question — zen at kvmr dot org.

Next show will have an interview of someone who knows more about Bitcoin.

Last Updated 12:16 AM 12-14-2017


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