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by Jason_25
Wed Dec 11, 2019 5:40 pm
Forum: General discussion
Topic: Good case for Pi 4 that is backwards compatible with Pi 3?
Replies: 7
Views: 933

Re: Good case for Pi 4 that is backwards compatible with Pi 3?

Thanks everyone. I decided to go with the acrylic case idea. I found three after a quick search on amazon: https://www.amazon.com/GeeekPi-Acrylic-Raspberry-Cooling-Heatsinks/dp/B07T2CPC2H/ref=sr_1_4?keywords=pi+acrylic+case&qid=1576085427&sr=8-4 https://www.amazon.com/Raspberry-iUniker-Heatsink-Mode...
by Jason_25
Tue Dec 10, 2019 6:58 pm
Forum: General discussion
Topic: Good case for Pi 4 that is backwards compatible with Pi 3?
Replies: 7
Views: 933

Good case for Pi 4 that is backwards compatible with Pi 3?

I have noticed that several Pi 4 cases say they are meant for the Pi 4 only. Is there a case with good cooling for Pi 4 that also works with Pi 3? I would prefer to use the same type of case for everything I do.
by Jason_25
Fri Jul 26, 2019 8:45 pm
Forum: Troubleshooting
Topic: PI4 Sound from multiple sources?
Replies: 3
Views: 462

Re: PI4 Sound from multiple sources?

Is Pulseaudio installed? Are the programs you are using set to make use of Pulseaudio?

Personally I live with this limitation on all my Linux systems for simplicity sake.
by Jason_25
Thu Jul 25, 2019 8:12 pm
Forum: Troubleshooting
Topic: Pi 4 slow speed with Retroarch even in the menu
Replies: 1
Views: 1056

Pi 4 slow speed with Retroarch even in the menu

I have compiled Retroarch from source successfully. The only configure flag I used was --disable-x11. It appears to have compiled in NEON support as well. "sdl2" or "gl1" are required for video_driver under retroarch.cfg when not using the vc4 driver. Otherwise I get a black screen. "sdl2" is the on...
by Jason_25
Thu Jul 25, 2019 7:22 pm
Forum: Troubleshooting
Topic: Screen rotation not working on Pi 4 with vc4 driver and hdmi_ignore_edid
Replies: 0
Views: 189

Screen rotation not working on Pi 4 with vc4 driver and hdmi_ignore_edid

My 4.3" Waveshare touchscreen requires hdmi_ignore_edid in config.txt to work with the Pi 4. This is not required with earlier Pi versions and other Waveshare screens work fine without this line. We also know that screen rotation in config.txt does not work with the new driver. Unfortunately the hdm...
by Jason_25
Wed Jul 24, 2019 4:25 pm
Forum: Troubleshooting
Topic: Pi 4 negative over_voltage appears to cause more heating not less
Replies: 6
Views: 655

Re: Pi 4 negative over_voltage appears to cause more heating not less

I investigated the voltage problem further and I found out the problem with Raspbian. I think the problem with Raspbian screen refresh and HDMI failures is because the new driver does not work with screen rotation in config.txt. It instead uses "randr" like a regular PC. So you wait to boot into xor...
by Jason_25
Mon Jul 22, 2019 4:19 pm
Forum: Troubleshooting
Topic: Pi 4 negative over_voltage appears to cause more heating not less
Replies: 6
Views: 655

Re: Pi 4 negative over_voltage appears to cause more heating not less

I tried Raspbian first thing. It has this weird problem where the screen is not refreshed until you move the mouse. It also has a DE that does not look very touch screen friendly: you want to be able to easily force-resize windows to deal with the low resolution and make the window controls larger s...
by Jason_25
Sat Jul 20, 2019 10:26 pm
Forum: Troubleshooting
Topic: Pi 4 negative over_voltage appears to cause more heating not less
Replies: 6
Views: 655

Re: Pi 4 negative over_voltage appears to cause more heating not less

Thanks for that information. I am running Devuan Stretch 32-bit with the 20190709 bootloader and kernel from raspberrypi.org. It looks like the boot firmware included in raspberrypi-bootloader is also from 7/9. These are the latest files available on the web site. I browsed the commits to the firmwa...
by Jason_25
Sat Jul 20, 2019 6:29 pm
Forum: Troubleshooting
Topic: Pi 4 negative over_voltage appears to cause more heating not less
Replies: 6
Views: 655

Pi 4 negative over_voltage appears to cause more heating not less

In an effort to cool my Pi 4 down enough to eventually be put into a bag or pocket I have tried the undervolting options. This does not cause the CPU to cool down at all and may even heat it up. It is hard to tell if the extra heat comes from the negative being ignored or the reboots which build hea...
by Jason_25
Tue Feb 20, 2018 9:54 am
Forum: General discussion
Topic: Wireless/wifi voltage monitor/battery monitor/ADC that works with Pi?
Replies: 6
Views: 3778

Re: Wireless/wifi voltage monitor/battery monitor/ADC that works with Pi?

The problem with using the Pi as the "transmitter" is it would run even a huge deep cycle car battery down in a week or so. It would need it's own power station. I need something that is actually efficient. *shots fired*. I still have plans to try to use one as the "receiver" located indoors though....
by Jason_25
Sat Feb 17, 2018 6:13 pm
Forum: General discussion
Topic: Wireless/wifi voltage monitor/battery monitor/ADC that works with Pi?
Replies: 6
Views: 3778

Wireless/wifi voltage monitor/battery monitor/ADC that works with Pi?

I am looking for a sensor that can be wirelessly read back from, preferably, a Raspberry Pi or other generic computer. Proprietary wireless will be ok too if the price is right. I am trying to read back the voltage on a car battery at about 150 feet range. Here is a review of what I have found so fa...
by Jason_25
Fri Feb 09, 2018 11:50 pm
Forum: Other projects
Topic: Choosing the pie for portability and performance
Replies: 8
Views: 1638

Re: Choosing the pie for portability and performance

Awesome thread. I have gone through a lot of the problem that were mentioned here myself. Imperf3kt, that is a beautiful case. It really looks professional. My advice is to forget the keyboard because you will have many more challenges at a basic level than adding extra optional features. As has bee...
by Jason_25
Thu Feb 08, 2018 6:05 pm
Forum: General discussion
Topic: Exar XR21B1411 driver
Replies: 25
Views: 8434

Re: Exar XR21B1411 driver

It should just be the name of the module you load with insmod minus the path or the .ko part. The top part of /etc/modules, if it already exists, has a brief explanation also.
by Jason_25
Thu Feb 08, 2018 2:44 am
Forum: General discussion
Topic: Exar XR21B1411 driver
Replies: 25
Views: 8434

Re: Exar XR21B1411 driver

/etc/modules will let you load the driver automatically at boot time. You should not have to be running make more than once.
by Jason_25
Fri Feb 02, 2018 7:11 pm
Forum: General discussion
Topic: touchscreen between 3.5" - 5" for Pi Zero
Replies: 30
Views: 13224

Re: touchscreen between 3.5" - 5" for Pi Zero

First of all, I like where you are going with this. I would suggest to have an alternate day job if you don't already in case you run into a dead end. It would be virtually impossible to create a Linux mobile device to compete with Android or Iphone on an economic level because let's face it, most p...
by Jason_25
Mon Jan 22, 2018 4:43 am
Forum: General discussion
Topic: Extra short or right angle dupont connectors? For stacking components on top of GPIO
Replies: 3
Views: 1391

Re: Extra short or right angle dupont connectors? For stacking components on top of GPIO

I just got around to trying this. Thanks for the tip on the IDC connectors and pulling off the clip. The ones I have do not have exposed metal when you pull off the clip. Still plastic but much shorter. I am a little worried about the thickness of the wire when it comes to powering a device straight...
by Jason_25
Tue Jan 09, 2018 1:15 pm
Forum: General discussion
Topic: Extra short or right angle dupont connectors? For stacking components on top of GPIO
Replies: 3
Views: 1391

Extra short or right angle dupont connectors? For stacking components on top of GPIO

I was hoping to find some extra short dupont connectors or premade wires with extra short dupont connectors already attached. I am stacking a battery (covered in electrical tape) directly on top of the gpio connector. I need to do this to save space. So I figured the easiest option to still use the ...
by Jason_25
Mon Jan 01, 2018 3:40 pm
Forum: General discussion
Topic: Management of expectations
Replies: 35
Views: 5753

Re: Management of expectations

I am surprised that with so many knowledgeable people here we still have to speculate on what the problem is. Is there any of us here capable enough of finding the exact problem area within the Firefox source code? I am finding it harder than ever to use or recommend the Pi with the web page problems.
by Jason_25
Tue Dec 05, 2017 4:10 am
Forum: General discussion
Topic: Best 64 bit OS for the Pi...bear with me...
Replies: 11
Views: 2398

Re: Best 64 bit OS for the Pi...bear with me...

I have been running the 64 bit version of Devuan Linux and have been pretty happy with it. No problems compiling stuff once I have found the right packages and the performance is acceptable. Of course you know that the video acceleration firmware and the experimental OpenGL drivers do not work on 64...
by Jason_25
Tue Nov 21, 2017 5:21 pm
Forum: General discussion
Topic: Raspberry Pie 3 for Christmas - Recommendations
Replies: 13
Views: 1790

Re: Raspberry Pie 3 for Christmas - Recommendations

1. Yes you can you the included Python to learn to program but you can also use Bash (shell scripting) or many others if Python looks too confusing. 2. Yes you can just swap Micro SD and you don't necessarily need an expensive kit. A good kit for a kid would include a small screen but then you have ...
by Jason_25
Tue Nov 21, 2017 5:10 pm
Forum: General discussion
Topic: FCC Certification for Pi in a Box
Replies: 24
Views: 7864

Re: FCC Certification for Pi in a Box

What is the problem with Wifi/BT, box and EMC/FCC? There will be higher emission or what? And what will happen if the device does not have EMC cert. I guess, 90% of chinese electronic devices sold over internet do not have such certs. Law enforcement beating down your door and arresting you for dar...
by Jason_25
Sun Nov 05, 2017 9:31 pm
Forum: Other projects
Topic: A palmtop device project for you
Replies: 0
Views: 493

A palmtop device project for you

I was always spellbound by the handheld "full" PCs created by Panasonic, Sony, GPD and others. I was equally spellbound by their price. During the time of developing my Mobile Internet Device I had some parts left over so I put them to work on making a mini laptop of my own. I imagine the overall sp...
by Jason_25
Sun Nov 05, 2017 9:30 pm
Forum: Other projects
Topic: Make it yours: a portable TV project
Replies: 0
Views: 655

Make it yours: a portable TV project

Portable TVs are becoming more of a rarity with people watching increasingly more internet video on the go. This is a shame because portable TVs have a very useful niche for emergencies and outdoor entertainment alike. It is possible to incorporate more modern technology into a portable TV today suc...
by Jason_25
Sun Nov 05, 2017 9:30 pm
Forum: Other projects
Topic: Your very own Mobile Internet Device
Replies: 5
Views: 1608

Re: Your very own Mobile Internet Device

Around one month early from the one year anniversary the project has reached a point of stability. The two current and supported designs feature either the Pi 3 or Pi Zero/W to fit nearly any budget. Many bugs have been fixed and the overall flow of the interface has been changed to be smoother. May...
by Jason_25
Sat Oct 28, 2017 11:55 am
Forum: General discussion
Topic: Getting Anbox (Android emulator) to run?
Replies: 2
Views: 12454

Getting Anbox (Android emulator) to run?

Has anyone gotten this to run? I compiled it back when it was first released but was never able to get it to run a program. I was thinking of giving it another try but didn't want to waste time on it if someone points out that it would not work for some reason. I think it would be be one of the most...

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