New answers tagged

0 votes

Rpi 4B 2G doesn’t boot. Green led: one long and one short blinks

after buying a new Raspberry Pi 4B and installing Volumio the system behaved like the one I thought was broken. The problem is that the power cable was a USB-A => USB-C. I changed to a USB-C => ...
Matteo's user avatar
  • 1
0 votes
Accepted

Kernel in use does not match headers after manual update

sudo apt update; sudo apt install --reinstall libraspberrypi0 libraspberrypi-{bin,dev,doc} raspberrypi-bootloader raspberrypi-kernel will put it back to the latest supported kernel/bootcode (which is ...
Milliways's user avatar
  • 60k
0 votes

Connect USB hub to RPi 4 USB C port to power the Pi and access peripherals?

people saying the USB-C on Raspberry PI 4 can only be used for power delivery is incorrect.. You can indeed use the USB-C for other tasks but you then have to provide power to the PI 4 using the GPIO ...
user3154672's user avatar
0 votes

OBS doesn't work

its not working on my raspberry pi 4 model b, neithrt the obs studio is working, nor the pi apps is installing on the system. The commd to install pi apps is not working for bookworm version. And when ...
Narendra Shrivastav's user avatar
1 vote

OSError: libmmal.so: cannot open shared object file: No such file or directory

I assume that is Raspberry Pi OS Bookworm that you are using. You should be using picamera2, picamera is out of date. https://github.com/raspberrypi/picamera2/blob/main/examples/capture_jpeg.py #!/usr/...
CoderMike's user avatar
  • 6,982
0 votes

ESC, BLDC control with pigpio: set_PWM_dutycycle or set_servo_pulsewidth, and other ESC questions

To answer one of the questions you asked it makes no difference which you use. They are just different ways to specify the same thing. Use whichever is the most convenient. It is far from clear what ...
Milliways's user avatar
  • 60k
0 votes

receive data from cc2640r2f(Texas instrument) and save it on Raspberry pi 4 with bluetooth

Having some experience in using BT on Raspberry Pi, I can tell you one thing with certainty: The difficulty of using Bluetooth will vary tremendously depending upon which RPi version of the OS you use....
Seamus's user avatar
  • 22k
0 votes

Raspberry pi not executing files

It sounds to me like your program is running, but immediately stopping right after it runs. One of the most powerful aspects of Linux is the power of the command-line. If you haven't taken some time ...
utdream's user avatar
  • 113
0 votes
Accepted

Keyboard keys still messed up after changing locale

Needed to set locale character set from "ISO-8859-x" to "UTF-8" in Prefs > Raspberry Pi Configuration > Localisation. Didn't know what these terms mean I so hadn't set them ...
A__'s user avatar
  • 153
0 votes

My Raspi4 hdmi won’t sound

Or, in the case of Raspberry Pi 3+ running Raspbian GNU/Linux 11 (bullseye), the options may be slightly different in Audio > System Options. 0 Headphones 1 MAI PCM i2-hifi-0 Select Option 1 and ...
Carl Stevens's user avatar
0 votes

Powering ESP32 with Raspberry Pi 4 USB Port

According to the documentation here you can draw up to 1.2A across all the 4 USB ports combined, so 160mA should be fine assuming your power supply to the PI 4 can handle it.
hexbugger's user avatar
2 votes

Problems with start service automatically on boot

Anyone knows why multi-user.target doesn't work? Many tutorials that teach how to create a service in rpi use multi-user.target. Likely because multi-user.target is not the default target; if you ...
goldilocks's user avatar
  • 58.9k
0 votes

Failed to add edge detection - Raspberry Pi 4 GPIO

I encountered the same error message, ‘Failed to add edge detection,’ on my Raspberry Pi 4. After reinstalling Raspberry Pi OS, I still faced the same issue. However, my problem was resolved by ...
Khaledalmolaa's user avatar
0 votes

Change tty remotely via SSH connection on a Mac

Strictly this question is not Pi specific. Have you tried tmux (a terminal multiplexer) in lieu. This allows you to switch between multiple programs and allows easy switching between them. In practice ...
Milliways's user avatar
  • 60k
0 votes

Displaying image or gif during boot in ubuntu server 20.04

You can customize the boot process of Ubuntu Server 20.04 on a Raspberry Pi 4B to display an image, GIF, or short video instead of the usual logs. You'll need to have the image, GIF, or short video ...
liaifat85's user avatar
0 votes

Raspberry Pi 4 is unable to ping each other

You need to check the routing tables on both Raspberry Pis (route -n). Check if there is a route between the two subnets. Also check the configurations of both access points. Make sure that they are ...
liaifat85's user avatar
0 votes

power problem with pi4 and 7" touchscreen

Yes you can and should run the Pi from USB and also the 7" screen from USB. The lighting bolt indicates low power for (one of the) various reasons, but the one that got me the most (until I ...
Clóvis Fritzen's user avatar

Top 50 recent answers are included