Your Raspberry Pi Projects

PhireSide said:
So an update on my little venture:

  • The Adata powerbank doesn't actually supply 5v as per the spec sheet, but rather ~4.6v. The Pi3 voltage regulator squeals at anything lower than 4.73v and clocks the ARM cores down to 600MHz until a reboot is performed. If the sensor grabs 4.75v and up upon reboot, it will not throttle the ARM cores. I tried with the 1A and 2.1A outputs on the Adata powerbank, to no avail.

  • The Boabab Micro-USB Travel Adapter, rated 5v and 2.1A, also only delivers around 4.7v at best and fails to power the Pi properly. I am using a very short (15cm) thick little USB cable that was supplied with the powerbank, so internal resistance should be low. There are no AWG numbers on the cable, however, so I am speculating that it must be around 24/26. My other USB cables are all 28AWG and much longer so I didn't try them.

  • (off topic) Even the weedeater bump feed head that I ordered along with the above is incorrect, as it doesn't include the piece that mounts on the shaft - so I can essentially return my entire order due to it not being suitable for my needs.
My best bet would be to pull a 9V supply off the Gizzu powerbank and use a buck converter and set it at 5.1v to power the Pi, and increase it to get exactly 5v at the microUSB end. This is becoming one massive headache :(
Click to expand...

I'll check if my router power backup. 12v gate battery + car charger gives 5v
 
K3NS31 said:
Or a boost converter from one of your 5V sources (well, almost 5V, lol) just to pump it up a bit. Assuming you have enough current to play with as well.
Click to expand...
What I eventually did was follow the advice given to me by @Daruk and added avoid_warnings=2 to config.txt and my power issues seem to have disappeared. It now boosts to 1400MHz and seems stable enough for daily usage. Time will tell whether I will encounter SD corruption over the coming months, but I am not running much on there and can have it set up as it is in around an hour.

I should just dd a backup img of it but I am pretty lazy. Maybe I'll look into it when I have a day off again :)
 
Super interesting write up about Pi4 heating issues and firmware updates from the Pi foundation.
Also useful TLDR tip - keep your Pi vertical.

www.raspberrypi.org

Thermal testing Raspberry Pi 4 - Raspberry Pi

Raspberry Pi 4 just got a lot cooler! The last four months of firmware updates have taken over half a watt out of idle power and nearly a watt out of fully loaded power
www.raspberrypi.org www.raspberrypi.org
 
Windows 10 now runs on the Raspberry Pi 4 and 3

Developers have finally installed ARM-optimized version of Windows 10 on the Raspberry Pi 4 after some people managed to get it running on the Raspberry Pi 3 in the first half of 2019.

Raspberry Pi 4 and Pi 3 officially support the IoT Core version of Windows 10, which is not same as the version of Windows 10 that runs on a desktop but is a stripped-back release for low-power computer board.

More
 
dualmeister said:
Windows 10 now runs on the Raspberry Pi 4 and 3

Developers have finally installed ARM-optimized version of Windows 10 on the Raspberry Pi 4 after some people managed to get it running on the Raspberry Pi 3 in the first half of 2019.

Raspberry Pi 4 and Pi 3 officially support the IoT Core version of Windows 10, which is not same as the version of Windows 10 that runs on a desktop but is a stripped-back release for low-power computer board.

More
Click to expand...
No thanks. Open source FTW! Just fixed keyboard shortcuts on my Rpi with a simple copy command sudo cp /etc/xdg/openbox/lxde-pi-rc.xml /home/pi/.config/openbox and it felt like I conquered the world.
 
K3NS31 said:
Pi 4 2GB price drop to for 35 USD.
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Will take a while before it filters down to SA.

They also fixed the USB-C power connection and improved SD card performance in it's new iteration. Again, dunno how long it's gonna take to get here
 
Hamish McPanji said:
Will take a while before it filters down to SA.

They also fixed the USB-C power connection and improved SD card performance in it's new iteration. Again, dunno how long it's gonna take to get here
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It's already here. The pi 4 I got from Pishop end of last year is the revision 1.2 number c03112.
 
backstreetboy said:
It's already here. The pi 4 I got from Pishop end of last year is the revision 1.2 number c03112.
Click to expand...
unlikely, the news about the usb c fix only dropped about a week or 2 ago. Seriously doubt your 2019 model has it. Not to mention pi shop keeps quite a lot of stock on hand, so even less likely to be new.
 
K3NS31 said:
unlikely, the news about the usb c fix only dropped about a week or 2 ago. Seriously doubt your 2019 model has it. Not to mention pi shop keeps quite a lot of stock on hand, so even less likely to be new.
Click to expand...
The new board was out a long time already before the news broke since it's just a small revision update because the foundation doesn't want to bog the lineup with unnecessary new models (makes sense). A guy on Reddit got it in November already
https://www.reddit.com/r/raspberry_pi/comments/dv8bp2
https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=256646. Plus the Pi 4 4gb is is the best selling version. Doubt Pishop will have "a lot of stock" on hand.
 
backstreetboy said:
The new board was out a long time already before the news broke since it's just a small revision update because the foundation doesn't want to bog the lineup with unnecessary new models (makes sense). A guy on Reddit got it in November already
https://www.reddit.com/r/raspberry_pi/comments/dv8bp2
https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=256646. Plus the Pi 4 4gb is is the best selling version. Doubt Pishop will have "a lot of stock" on hand.
Click to expand...

Thanks for the info. Unfortunately can't go through 14 pages of Raspi forum while at work, so will just take your word for it. Did they actually confirm that this version has the USB resistor fix?
 
K3NS31 said:
Thanks for the info. Unfortunately can't go through 14 pages of Raspi forum while at work, so will just take your word for it. Did they actually confirm that this version has the USB resistor fix?
Click to expand...
Yes...
www.raspberrypi.org

Raspberry Pi Documentation - Raspberry Pi hardware

The official documentation for Raspberry Pi computers and microcontrollers
www.raspberrypi.org

a03111 4B 1.1 1GB Sony UK
b03111 4B 1.1 2GB Sony UK
b03112 4B 1.2 2GB Sony UK
c03111 4B 1.1 4GB Sony UK
c03112 4B 1.2 4GB Sony UK
Click to expand...
Only the 2 and 4gb versions got the fix.
 
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