All Questions
37,946
questions
0
votes
2
answers
16
views
Power Supply Calculation
I'm getting confused with the way I should calculate which power supply to look for;
I am using a Raspberry Pi 4b. The max current draw from the power supply I would require would be 2A, but I need ...
- 22k
0
votes
1
answer
712
views
No cursor on bullseye
Today I updated my RPi from buster to bullseye. After reboot the cursor is not visible. Doing a right click brings up the expected dialog, showing that the mouse input is coming in.
I been searching ...
CommunityBot
- 1
0
votes
1
answer
150
views
Why did my Raspberry Pi 4 stop playing sound?
Two updates ago, my Pi 4 just stopped playing sound and I tried doing another update/upgrade combo and still nothing. Could this be a corrupted sound driver? How can I fix this? I purchased the Pi 4 ...
CommunityBot
- 1
0
votes
1
answer
368
views
Setting X to use 800x480
For some reason, despite settings in /boot/config.txt when I start X windows it goes with a resolution of 1024x768. I have a 5 inch screen with that uses 800x480. How can I reconfigure X to use a ...
CommunityBot
- 1
1
vote
1
answer
326
views
audio video out of sync / framerate issue?
I am trying to sync the raspberry pi camera (revision 1.3) to an external microphone. The sync is fine for the first 5 minutes or so, but around the 20 minute mark, the difference becomes really ...
CommunityBot
- 1
1
vote
1
answer
531
views
How to Access Terminal Over Serial Port in Raspberry pi 4
I'm trying to Read and Write over Serial Port to Terminal in Headless Linux That I Installed on my Rpi4.
is That even Possible? is so, how?
CommunityBot
- 1
0
votes
1
answer
11
views
Error on raspberry 3B+ when updating and installing opencv
I am a student in Vietnam, working on a project for my embedded course and encountered this error on raspberry 3B+, please help.)
pi@raspberrypi:~ $ sudo apt-get update
Hit:1 http://archive....
- 60k
1
vote
1
answer
614
views
gmediarender configure output mono
I have configured gmediarender on the RPi 3. However I prefer only mono output.
Following this guide to downmix to mono did not output mono from the gmediarender.
/etc/asound.conf
pcm.card0 {
...
CommunityBot
- 1
0
votes
1
answer
23
views
R-pi Zero W can scan wifi but can't connect
I used the official imager to set up localization and networking and install its "recommended OS" (32-bit bullseye) on a Raspberry Pi Zero W. It comes up to a desktop where the network ...
CommunityBot
- 1
1
vote
1
answer
2k
views
KeDei LCD version 6.0 with Raspberry Pi 3 driver problem
I got KeDei LCD with version 6.0 and inserted this to my raspberry pi 3
When I install drivers or images, after reboot i see on this display, how system load, and then screen become white.
I tried ...
CommunityBot
- 1
1
vote
1
answer
952
views
Mirroring output to element 14 7" touchscreen and hdmi
I would like to have the touchscreen and hdmi displays mirrored but I can't find any info or setting to mirror. Running Raspbian Buster and using an element 14 7" touchscreen.
Edit: I got mirroring ...
CommunityBot
- 1
0
votes
1
answer
1k
views
Watch command "Refresh rate"
I am using a Pi 3 Model B and a Sensehat. I am using the following command:
sudo watch -n 0.1 python sensors.py
My program runs fine and the command works, However I have one issue.
Even though I ...
CommunityBot
- 1
0
votes
1
answer
861
views
Dependencies fail to install, cannot install picamera on pi3
When I run apt-get install python3-picamera it fails with different dependency issues like:
files list file for package 'libparams-util-perl' is missing final newline
or
files list file for package '...
CommunityBot
- 1
1
vote
1
answer
234
views
Using Thorlabs Kinesis Brushed Motor Controller
I am trying to use Thorlabs Brushed Motor Controller with Raspberry Pi 4, Model B. But its own software is Windows based and so their .dll files are Windows based too I suppose. I am trying to use ...
CommunityBot
- 1
0
votes
1
answer
614
views
Pi connected to VPN service - how to reach from outside of LAN?
I have a Raspberry Pi (running Raspbian) in my home-network.
After connecting the Pi to a VPN-service following these steps, i am still able to reach the Pi from within my local network ("ssh 192.168....
CommunityBot
- 1
0
votes
0
answers
12
views
Recommendations for a Pi UPS & Audio HAT
I have a RaspberryPi project I am interested in that would need an audio HAT and UPS.
Once connected, I would need access to some of the I/O pins and ideally, I would like the audio to be reasonable ...
- 1
0
votes
2
answers
96
views
Raspberry Pi 4: available devices?
I have a Raspberry Pi 4. No camera (nor CSI, nor USB) is plugged.
The Pi comes basically out of the box: installed a fresh raspbian with default /boot/config.txt. I just added an overlay for a (CSI) ...
CommunityBot
- 1
1
vote
1
answer
538
views
Building Hadoop 2.9.0 on Raspberry 3
I tried to build Hadoop 2.9.0 based on this article:
http://www.widriksson.com/raspberry-pi-2-hadoop-2-cluster/
While building the Hadoop sources, I ran into a problem that may or may not be related ...
CommunityBot
- 1
1
vote
2
answers
3k
views
WPE - WebPlatform For Embedded built directly on Raspbian Stretch (HW Support)
I'm trying to build WebKitForEmbedded https://wpewebkit.org/ but this is disaster. I've created another post about this issue (https://stackoverflow.com/questions/51578580/wpe-build-installed-directly-...
CommunityBot
- 1
0
votes
0
answers
9
views
adafruit_platformdetect board.py pin mapping
Simply: I'm trying to find what physical pin on the Raspberry PI 4B that attributes like board.D5 map to.
QUESTIONS:
Can I simply get or create a mapping of the board.py pin attributes to actual ...
- 60k
1
vote
1
answer
2k
views
Disable systemd-random-seed
I am looking to speed up the boot time on my Raspberry pi and systemd-random-seed is taking 20s (old Pi 1). From what I've read up this is waiting to collect entropy to generate a system random seed. ...
CommunityBot
- 1
0
votes
1
answer
19
views
How can I switch mains-powered loads wirelessly, with low cost and low power consumption
I'm setting up a Pi (currently developing on a a 3B, but I'm assuming I'll upgrade to a 4B) as a CCTV server and fileserver, but I've also just got solar panels installed and would like to switch ...
- 575
0
votes
1
answer
22
views
Attaching an interrupt on SPI MISO pin
I am reading an ADC that signals when the data conversion is complete by setting the SPI MISO pin low. I would like to set an interrupt on that pin, but using the GPIO library to do so isn't working. ...
CommunityBot
- 1
0
votes
1
answer
167
views
Control 2 steppers and 1 servo a the same time on a motor Hat
Basically, I have a raspberry pi 4 with a Motor Hat to control two stepper motors. The whole thing looks like this : https://i.stack.imgur.com/SIjzI.jpg
Now I want to connect a servo motor, and I know ...
CommunityBot
- 1
0
votes
1
answer
259
views
Detecting a Pi Bluetooth server on an IPhone
I am trying to set up an IoT device using a Raspberry Pi 3A+. I want the Pi to connect to WiFi, so for this I set up an access point on which the WiFi credentials can be sent. The issue is finding ...
CommunityBot
- 1
1
vote
1
answer
550
views
Assigning IP to eth0 device using Pi already set up as a wireless access point
I have followed the tutorial at https://www.raspberrypi.org/documentation/configuration/wireless/access-point.md and successfuly turned my pi into a standalone wireless access point to control my ...
CommunityBot
- 1
3
votes
1
answer
723
views
Is it possible to connect a Minecraft Pi Edition Python script to a specific active game window?
Is it possible to connect a Minecraft Python script to a specific active game window when multiple game windows are currently open?
For example, I have three different open games on one Raspberry Pi ...
CommunityBot
- 1
0
votes
1
answer
18
views
+50
How do I block access to my Raspberry Pi outside of Pivpn Wireguard VPN?
I am running a PiVPN Wireguard installation on my Pi. I have multiple docker services running on the Pi as well. My setup works. I can connect to my VPN and access all the services.
The problem is ...
- 1
0
votes
2
answers
3k
views
Raspberry Pi 3 model B CentOS desktop installation
I have installed CentOS 7 on my Pi 3 using CentOS-Userland-7-armv7hl-Minimal-1602-RaspberryPi3.img.xz
which got me a minimal install.
I'm trying to get vncserver running on the Pi with a Desktop ...
CommunityBot
- 1
2
votes
1
answer
796
views
Raspbian Buster and XRDP keyboard layout
I've Raspbian Buster installed on Raspberry Pi 4. I installed XRDP by first removing/purging RealVNC server (according to some sources on the web, they cannot coexist peacefully) and then installing ...
CommunityBot
- 1
1
vote
1
answer
324
views
Delay/Lag when controlling motors with arduino from raspberry pi
I'm making a car-type-thingy where I control motors connected to an arduino with a raspberry pi via serial communication. I'm using the adafruit motor shield to control the motors. I want to control ...
CommunityBot
- 1
3
votes
2
answers
537
views
SOLVED Unable to connect to wifi--does nothing
I just purchased a pi 2 through the CanaKit, and I'm having some issues getting the wifi dongle to work. It scans for networks and finds mine, but when I put in the passcode and click "OK," ...
- 60k
0
votes
0
answers
10
views
Video Streaming with GSM/GPRS SIM800 Modules
I want to stream video footage collected from a camera to a webserver using a Raspberry Pi and internet without the use of Wireless LAN.
I was originally thinking of just connecting a USB modem with a ...
- 1
0
votes
1
answer
805
views
Python code cannot detect my i2c address
I would like to ask some opinions regarding i2c communications with pca9685. My i2c1(SDA=GPIO2, SCL=GPIO3) of my rpi 4b is used by my mpu6050, which I had to enable one more i2c channel of my ...
CommunityBot
- 1
0
votes
1
answer
63
views
RF433 Rpi Serial cannot read signals in Python
I am running this code.
import serial
import time
serialport = serial.Serial('/dev/serial0',baudrate=1200, timeout=3)
t = "ttt"
while True:
serialport.flush()
serialport.write(t....
CommunityBot
- 1
0
votes
0
answers
7
views
MT7601U Wireless Adapter only works if connected after boot
I'm using a Raspberry Pi Zero W, with a USB hub and adding a second wifi. If the dongle in question is connected after boot, it works flawlessly:
Bus 001 Device 004: ID 148f:7601 Ralink Technology, ...
0
votes
0
answers
8
views
How to enable net_cls in cgroup and test
I am trying to enable net_cls in cgroup and test it on a raspberry pi 4.
$ cat /proc/cgroups
#subsys_name hierarchy num_cgroups enabled
cpuset 0 71 1
cpu 0 71 1
cpuacct 0 71 1
...
2
votes
1
answer
676
views
How do I enable both a locked-screen and no HDMI signal to monitor?
I have the latest Raspberry Pi OS (Debian Bullseye) on a Raspberry Pi 4. I want to achieve a setting whereby after a period of time the session will lock and no signal will get sent through HDMI so ...
CommunityBot
- 1
7
votes
1
answer
33k
views
End Kernel panic - not syncing: Attempted to kill init
I have a problem when starting my Raspberry Pi (Rasberry Pi 3 Model B). Everything worked fine. After the last reboot I've got this error. Any help would be appreciated.
- 1
0
votes
0
answers
19
views
'make' command not working on my Raspberry Pi while compiling the SocketCAN driver
Problem: When running "make" command I am met with errors
I've been trying to install a SocketCAN driver on my pi device so I can communicate with a USB CAN Adapter. I've been following ...
1
vote
1
answer
919
views
Pi 4 how to insert and remove usb
I have 2 questions - apologies if they are trivial.
When I shut down my pi4 the led goes out but comes back on soon after.
Is this ok/ normal?
I use the GUI and have had a USB stick corrupted. Can ...
CommunityBot
- 1
1
vote
1
answer
903
views
Raspberry Pi Model 2B Hostapd installation error: Unable to locate package
So, I am trying to set up my raspberry pi model 2B as a wifi hotspot. All the articles recommended installing and using hostapd and dnsmasq. I was able to install the dnsmasq package without any ...
CommunityBot
- 1
0
votes
0
answers
343
views
undefined symbol: libusb_free_config_descriptor
I try to use a Chafon UHF RFID reader via USB with Pi Zero.
The manufacturer asked me for installing this:
sudo apt-get install libusb-1.0-0-dev
and use this Python code:
UsbDemo.py
#!/usr/bin/python
...
1
vote
2
answers
2k
views
Why does my pi using Cups print test pages fine, but nothing else?
I installed cups onto my pi fairly smoothly, printed the test page on cups, all good. Locate the printer (HP deskjet 960c) which is located inside the RASPBERRYPI network folder, all connects fine, ...
CommunityBot
- 1
0
votes
3
answers
6k
views
Can't connect to PiVPN (WireGuard) - what am I missing?
I'm looking for some help to get my PiVPN running correctly.
I have PiHole installed on a Raspberry Pi and I'm now trying to install PiVPN on it to be able to make use of the ad blocking while I'm on ...
CommunityBot
- 1
0
votes
2
answers
3k
views
Streaming straight from libcamera-vid to RTMP on Pi Zero 2 W: FFmpeg not needed?
I was able to figure out all of my libcamera stream settings needed to stream video from my Camera Module 3 and audio from a USB microphone in my RPi Zero W 2 straight to YouTube, which is as follows:
...
CommunityBot
- 1
0
votes
1
answer
16
views
How to solve "RuntimeError: No access to /dev/mem. Try running as root!" to use RPi.GPIO on my RPI PI 5 and tensowflow installation problems
import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
GPIO.setup(18,GPIO.OUT)
print("LED on")
GPIO.output(18,GPIO.HIGH)
time.sleep(1)
print ("LED off")
GPIO.output(18,GPIO.LOW)...
- 60k
0
votes
0
answers
13
views
Disable PIN request for pairing on Rpi
when i try to connect the rpi bluetooth it showa a pin. i wat to be able to connect the rpi bluetooth without a pin. how can i disable the pin?
i try to disable the pin via bluetooth settings but it ...
1
vote
2
answers
1k
views
SOLVED How to change keyboard without using raspi-config?
I have HypriotOS running which is a Raspbian Stretch version
uname -a
Linux test 4.14.34-hypriotos+ #2 Sun APr 22 15:29:32 UTC 2018 armv61 GNU/Linux
lsb_release
No LSB modules are available.
...
- 60k
1
vote
2
answers
231
views
Raspberry Pi 5 won't sychronize date and time
I used the RPi Imager on my Mac to setup RPi OS 64-bit (the recommended version for me). Immediately after booting for the first time, I noticed that the date is stuck on 12/5/2023 (the date of the ...
