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by RPIgoodSBC
Fri Dec 10, 2021 6:31 pm
Forum: General discussion
Topic: Testing 2021 new Official Micro USB Power Supply.
Replies: 28
Views: 1940

Re: Testing 2021 new Official Micro USB Power Supply.

Test_micro-usb-raspberrry-pi_2021-power-supply-test2.jpg 000mA ... 5.23V 300mA ... 5.19V 600mA ... 5.16V 900mA ... 5.13V 1.20A ... 5.10V 1.50A ... 5.06V 1.80A ... 5.03V 2.10A ... 5.00V 2.40A ... 4.96V 2.70A ... 4.93V 2.90A ... 4.90V 2.98A ... 4.89V ( shutdown ) This is a more exact test. OOC does t...
by RPIgoodSBC
Fri Dec 10, 2021 6:05 pm
Forum: General discussion
Topic: Testing 2021 new Official Micro USB Power Supply.
Replies: 28
Views: 1940

Re: Testing 2021 new Official Micro USB Power Supply.

Test_micro-usb-raspberrry-pi_2021-power-supply-test2.jpg
Test_micro-usb-raspberrry-pi_2021-power-supply-test2.jpg (195.85 KiB) Viewed 290 times
000mA ... 5.23V
300mA ... 5.19V
600mA ... 5.16V
900mA ... 5.13V
1.20A ... 5.10V
1.50A ... 5.06V
1.80A ... 5.03V
2.10A ... 5.00V
2.40A ... 4.96V
2.70A ... 4.93V
2.90A ... 4.90V
2.98A ... 4.89V (shutdown)

This is a more exact test.
by RPIgoodSBC
Fri Dec 10, 2021 5:52 pm
Forum: General discussion
Topic: Testing 2021 new Official Micro USB Power Supply.
Replies: 28
Views: 1940

Re: Testing 2021 new Official Micro USB Power Supply.

The first test was made with this hardware (see photo) ... I will do another test more exact without connectors intermedia... 000mA ... 5.23V 300mA ... 5.19V 600mA ... 5.15V 900mA ... 5.10V 1.20A ... 5.06V 1.50A ... 5.02V 1.80A ... 4.97V 2.10A ... 4.93V 2.40A ... 4.89V 2.70A ... 4.84V 2.90A ... 4.81...
by RPIgoodSBC
Fri Dec 10, 2021 5:11 pm
Forum: General discussion
Topic: Testing 2021 new Official Micro USB Power Supply.
Replies: 28
Views: 1940

Re: Testing 2021 new Official Micro USB Power Supply.

Micro USB connector from Raspberry Pi power supply to ---> micro USB conector load HD35 and AT35 connected to the male usb HD35 from the female connector.
by RPIgoodSBC
Fri Dec 10, 2021 11:01 am
Forum: General discussion
Topic: Testing 2021 new Official Micro USB Power Supply.
Replies: 28
Views: 1940

Re: Testing 2021 new Official Micro USB Power Supply.

This is a test of the 2021 new Official Micro USB Power Supply using a consumption meter: 000mA ... 5.23V 300mA ... 5.19V 600mA ... 5.15V 900mA ... 5.10V 1.20A ... 5.06V 1.50A ... 5.02V 1.80A ... 4.97V 2.10A ... 4.93V 2.40A ... 4.89V 2.70A ... 4.84V 2.90A ... 4.81V 2.98A ... 4.80V ( shutdown ) This...
by RPIgoodSBC
Thu Dec 09, 2021 2:58 pm
Forum: General discussion
Topic: Testing 2021 new Official Micro USB Power Supply.
Replies: 28
Views: 1940

Testing 2021 new Official Micro USB Power Supply.

This is a test of the 2021 new Official Micro USB Power Supply using a consumption meter: 000mA ... 5.23V 300mA ... 5.19V 600mA ... 5.15V 900mA ... 5.10V 1.20A ... 5.06V 1.50A ... 5.02V 1.80A ... 4.97V 2.10A ... 4.93V 2.40A ... 4.89V 2.70A ... 4.84V 2.90A ... 4.81V 2.98A ... 4.80V ( shutdown ) This ...
by RPIgoodSBC
Sun Nov 28, 2021 5:30 pm
Forum: Troubleshooting
Topic: Chromium and other browsers not opening with Raspberry Pi Zero W
Replies: 5
Views: 376

Re: Chromium and other browsers not opening with Raspberry Pi Zero W

Pi zero-W and pi zero-2W have only 512Mb of RAM.
It is not enough to run browsers like Chrome or Firefox.Not reliably and usable.
by RPIgoodSBC
Sun Nov 28, 2021 2:30 pm
Forum: Troubleshooting
Topic: Chrome crashes when opening YouTube
Replies: 4
Views: 297

Re: Chrome crashes when opening YouTube

I can confirm this behaviour.
by RPIgoodSBC
Fri Jun 12, 2020 2:22 pm
Forum: General discussion
Topic: prime95 equivalent for Raspberry pi OS?
Replies: 2
Views: 1489

Re: prime95 equivalent for Raspberry pi OS?

RPi zero... wget https://raw.githubusercontent.com/ssvb/cpuburn-arm/master/cpuburn-a7.S gcc -o cpuburn-a7 cpuburn-a7.S ./cpuburn-a7 RPi... wget https://raw.githubusercontent.com/ssvb/cpuburn-arm/master/cpuburn-a53.S gcc -o cpuburn-a53 cpuburn-a53.S ./cpuburn-a53 sudo apt-get install stress stress -...
by RPIgoodSBC
Sun Oct 20, 2019 3:15 pm
Forum: General discussion
Topic: Four letter pHAT showing IP on rpi-4B
Replies: 0
Views: 805

Four letter pHAT showing IP on rpi-4B

This is my first program on python adapted from pimoroni github examples for fourletter pHAT. https://github.com/pimoroni/fourletter-phat https://pinout.xyz/pinout/four_letter_phat The program shows the current IP on rpi-4B using python3 and the ducoterra github branch that add "reverse" f...
by RPIgoodSBC
Fri Oct 18, 2019 2:17 pm
Forum: General discussion
Topic: Disable USB-3 to improve the wifi range.
Replies: 16
Views: 5894

Re: Disable USB-3 to improve the wifi range.

But, Is it posssible to made VIA chip to work only on USB-2 mode? No. I have discovered a weird behaviour from usb-3 and wifi 2.4 on rpi-4. {...} Seems that is better to use the bottom usb-3 port to avoid RF interference. Definitely, yes the bottom usb-3 port is better to avoid RF on 2.4 band.I don...
by RPIgoodSBC
Fri Oct 18, 2019 1:20 pm
Forum: General discussion
Topic: Disable USB-3 to improve the wifi range.
Replies: 16
Views: 5894

Re: Disable USB-3 to improve the wifi range.

I have tested now the rpi-3B+ versus the rpi-4B (usb booting raspbian on usb memory, noted in the other post) and tested on top and bottom usb-3 ports. Rpi-3B+ at 10 meters from the router in another room and on 2.4GHz wifi band is about 6Mbits/sec. .SD boot raspbian. Rpi-4B at 10 meters from the ro...
by RPIgoodSBC
Fri Oct 18, 2019 10:47 am
Forum: General discussion
Topic: Disable USB-3 to improve the wifi range.
Replies: 16
Views: 5894

Re: Disable USB-3 to improve the wifi range.

I have discovered a weird behaviour from usb-3 and wifi 2.4 on rpi-4. If I boot a usb memory (raspbian host) that lsusb reports ID 0781:5580 SanDisk Corp. SDCZ80 Flash Drive (32Gb USB-3 memory) on the top USB-3 port then I can not connect to wifi 2.4GHz but I can connect without problems to wifi 5GH...
by RPIgoodSBC
Thu Oct 17, 2019 10:19 pm
Forum: General discussion
Topic: Disable USB-3 to improve the wifi range.
Replies: 16
Views: 5894

Re: Disable USB-3 to improve the wifi range.

If you have a USB 3.0 devices that you don't need max performance from, connect them to the USB 2.0 ports and connect your USB 2.0 devices to the USB 3.0 ports. Or you could use a USB 2.0 extension cable to connect a USB 3.0 device as a USB 2.0 device (on the USB 3.0 ports). Shielded cables or encl...
by RPIgoodSBC
Thu Oct 17, 2019 10:19 pm
Forum: General discussion
Topic: Disable USB-3 to improve the wifi range.
Replies: 16
Views: 5894

Re: Disable USB-3 to improve the wifi range.

Is it possible to disable USB-3 by leaving USB-2 active in the four usb ports If you plug only USB2 peripherals, you will get only USB2 signals on the wires (the USB3 specific lines are not connected) and hence no 2,4GHz HF interference. Thanks.This is a way. But, Is it posssible to made VIA chip t...
by RPIgoodSBC
Thu Oct 17, 2019 8:28 pm
Forum: General discussion
Topic: Disable USB-3 to improve the wifi range.
Replies: 16
Views: 5894

Re: Disable USB-3 to improve the wifi range.

Yeah, I read it, about 20 minutes ago. AFAICS, if you're not actually using it, there won't be any interference generated, so, er, don't. OK :D I rephrase the question. Is it possible to disable USB-3 by leaving USB-2 active in the four usb ports with some parameter in /boot/config.txt or in any ot...
by RPIgoodSBC
Thu Oct 17, 2019 8:17 pm
Forum: General discussion
Topic: Disable USB-3 to improve the wifi range.
Replies: 16
Views: 5894

Re: Disable USB-3 to improve the wifi range.

So I see. Are you experiencing any actual issues? Not actually because I am using 5GHz band but I would like to know if it is possible to deactivate the USB-3 since in my house the 2.4GHz band goes much further and so I can use it preferably when I use the rpi headless. USB 3.0* Radio Frequency Int...
by RPIgoodSBC
Thu Oct 17, 2019 7:58 pm
Forum: General discussion
Topic: Disable USB-3 to improve the wifi range.
Replies: 16
Views: 5894

Re: Disable USB-3 to improve the wifi range.

dickon wrote:
Thu Oct 17, 2019 7:51 pm
What makes you think USB 3 has any impact on wifi at all, OOI? It's news to me.
It has measurable impact on the band 2.4.
by RPIgoodSBC
Thu Oct 17, 2019 7:44 pm
Forum: General discussion
Topic: Disable USB-3 to improve the wifi range.
Replies: 16
Views: 5894

Disable USB-3 to improve the wifi range.

Is it possible to disable USB-3 by leaving USB-2 active with some parameter in /boot/config.txt? I say this to avoid the loss of Wi-Fi performance with the rpi-4B adapter in the 2.4Ghz band due to interference caused by the USB-3. It would be a good idea if developers found some ingenious way to get...
by RPIgoodSBC
Thu Sep 19, 2019 6:17 pm
Forum: General discussion
Topic: Armor case question
Replies: 13
Views: 1853

Re: Armor case question

I have the same case.
You can read my comment about it here...

https://www.raspberrypi.org/forums/view ... &start=325

1mm thick thermalpad is ok.
by RPIgoodSBC
Tue Sep 17, 2019 12:47 pm
Forum: Troubleshooting
Topic: Unstable driver (?) for wireless keyboard and mouse..
Replies: 20
Views: 5753

Re: Unstable driver (?) for wireless keyboard and mouse..

In my case the mouse hang on touchpad is very occasional every 7 days approximately with a daily use. Anyway I have changed the microsoft touchpad wireless keyboard for a smaller one that takes up less space on the table. I've been with it for about 15 days and I haven't had touchpad failures. This ...
by RPIgoodSBC
Thu Sep 05, 2019 2:11 pm
Forum: General discussion
Topic: CPU burn for Pi Zero W?
Replies: 2
Views: 731

Re: CPU burn for Pi Zero W?

ProDigit wrote:
Thu Sep 05, 2019 1:41 am
Is there a version of CPUBurn that would work on the Raspberry pi Zero W?
If so, where can I download it?

Code: Select all

wget https://raw.githubusercontent.com/ssvb/cpuburn-arm/master/cpuburn-a7.S
gcc -o cpuburn-a7 cpuburn-a7.S
./cpuburn-a7
or you can use..

Code: Select all

sudo apt-get install stress
stress -c 4
by RPIgoodSBC
Sat Aug 17, 2019 5:22 pm
Forum: Troubleshooting
Topic: Unstable driver (?) for wireless keyboard and mouse..
Replies: 20
Views: 5753

Re: Unstable driver (?) for wireless keyboard and mouse..

Today it has turned off again but the keyboard has indicated me a low battery. I no longer remembered that I am using rechargeable NiMh batteries that give a lower voltage to the alkaline ones and that last a little less.The led indicator low batteries probably is designed to alkaline batteries that...
by RPIgoodSBC
Wed Aug 14, 2019 4:04 pm
Forum: Troubleshooting
Topic: Unstable driver (?) for wireless keyboard and mouse..
Replies: 20
Views: 5753

Re: Unstable driver (?) for wireless keyboard and mouse..

Could you possibly edit your post and put the list in code tags (</> fifth button across) as it shortens the scroll to scroll bars :lol: [ 9.098] (WW) The directory "/usr/share/fonts/X11/misc" does not exist. [ 9.098] Entry deleted from font path. [ 9.098] (WW) The directory "/usr/sh...
by RPIgoodSBC
Wed Aug 14, 2019 2:50 pm
Forum: Troubleshooting
Topic: Unstable driver (?) for wireless keyboard and mouse..
Replies: 20
Views: 5753

Re: Unstable driver (?) for wireless keyboard and mouse..

Today happens again.Pointer mouse freeze but keyboard works.After remove and replug dongle wireless for touchpad-keyboard-microsoft the mouse pointer works again. The wireless keyboard with touchpad is this... https://www.microsoft.com/accessories/en-us/products/keyboards/all-in-one-media-keyboard/n...

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