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by RPIgoodSBC
Sun Oct 20, 2019 3:15 pm
Forum: General discussion
Topic: Four letter pHAT showing IP on rpi-4B
Replies: 0
Views: 423

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" functionali...
by RPIgoodSBC
Fri Oct 18, 2019 2:17 pm
Forum: General discussion
Topic: Disable USB-3 to improve the wifi range.
Replies: 16
Views: 1242

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: 1242

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: 1242

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: 1242

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: 1242

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: 1242

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: 1242

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: 1242

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: 1242

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: 10
Views: 494

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: 2150

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: 278

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: 2150

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: 2150

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/share/fonts/X11/c...
by RPIgoodSBC
Wed Aug 14, 2019 2:50 pm
Forum: Troubleshooting
Topic: Unstable driver (?) for wireless keyboard and mouse..
Replies: 20
Views: 2150

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...
by RPIgoodSBC
Fri Aug 02, 2019 9:27 pm
Forum: Troubleshooting
Topic: Unstable driver (?) for wireless keyboard and mouse..
Replies: 20
Views: 2150

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

I can confirm this issue. I have a wireless keyboard 2.4Ghz Microsoft with touchpad and radomly the touchpad freezes.Only the touchpad, if I replug the wireless dongle the touchpad works again.In 1 month this happens to me 5 times, no pattern. I believe is something related to kernel driver.The keyb...
by RPIgoodSBC
Fri Aug 02, 2019 11:47 am
Forum: General discussion
Topic: Is this kernel warning important?
Replies: 2
Views: 294

Re: Is this kernel warning important?

trejan wrote:
Fri Aug 02, 2019 11:35 am
Ignore it. Harmless warning. More details at https://github.com/raspberrypi/linux/issues/3020
Ok.Thanks.
by RPIgoodSBC
Fri Aug 02, 2019 11:02 am
Forum: General discussion
Topic: Is this kernel warning important?
Replies: 2
Views: 294

Is this kernel warning important?

My pi4 is working fine but I see this output dmesg and I want to know if it is important or can help to a developer to trace any problem... sudo dmesg [ 1849.557286] ------------[ cut here ]------------ [ 1849.557367] WARNING: CPU: 3 PID: 437 at drivers/gpu/drm/vc4/vc4_firmware_kms.c:899 vc4_crtc_at...
by RPIgoodSBC
Wed Jul 31, 2019 10:40 am
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 562
Views: 227300

Re: Raspberry Pi 4 temperature

You've got that backwards. When it comes to thermal pads/grease/paste/whatever, less is better. The idea is to fill microscopic imperfections in the two binding surfaces with a better heat transfer medium than air, but not too much or you gain the opposite effect. With the thermal pad, the importan...
by RPIgoodSBC
Tue Jul 30, 2019 11:31 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 562
Views: 227300

Re: Raspberry Pi 4 temperature

You've got that backwards. When it comes to thermal pads/grease/paste/whatever, less is better. The idea is to fill microscopic imperfections in the two binding surfaces with a better heat transfer medium than air, but not too much or you gain the opposite effect. With the thermal pad, the importan...
by RPIgoodSBC
Tue Jul 30, 2019 9:16 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 562
Views: 227300

Re: Raspberry Pi 4 temperature

I have received my armor-case from geekworm and is working very good. I am using a thermal pad Thermal Grizzly Minus Pad 8 (1mm thick) you can put on CPU, RAM and Chip-USB. Here is a good web page about thermal-pads... https://graphicscardhub.com/best-thermal-pad/ https://es.aliexpress.com/item/400...
by RPIgoodSBC
Tue Jul 30, 2019 3:28 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 562
Views: 227300

Re: Raspberry Pi 4 temperature

I have received my armor-case from geekworm and is working very good. I am using a thermal pad Thermal Grizzly Minus Pad 8 (1mm thick) you can put on CPU, RAM and Chip-USB. Here is a good web page about thermal-pads... https://graphicscardhub.com/best-thermal-pad/ https://es.aliexpress.com/item/4000...
by RPIgoodSBC
Mon Jul 29, 2019 8:09 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 - new VLI firmware issues
Replies: 69
Views: 23420

Re: Raspberry Pi 4 - new VLI firmware issues

I am using now like host raspbian system (boot usb from) this enclosure... ORICO 2139-C3 USB-C interface and is working very good on stock firmware. For this helps someone to choose a case external SSD. https://www.amazon.es/ORICO-Transparente-Carcasa-Externa-Enclosure/dp/B07B2SQLZV sudo dd if=/dev/...
by RPIgoodSBC
Thu Jul 25, 2019 3:50 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 562
Views: 227300

Re: Raspberry Pi 4 temperature

Now I am running more than 30 minutes... Code: Select all cpuburn-a53 on rpi4B with Noctua 8x8cm 5V PWM at about 40% rpm and the max temp is 67C with heatsink 1.5x1,5x1,5cm on cpu and 1x1x1cm on ram chip and 1x1x0,5cm on usb-hub chip with 3M-8810 thermal pads. At night on quiet room Noctua 8x8cm 5V ...

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