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Questions tagged [raspberry-pi]

Low-cost single-board computer the size of a credit card. Also check the Raspberry Pi SE: http://raspberrypi.stackexchange.com/

Raspberry Pi Logo

Raspberry Pi is an ultra low-cost computer ($25 for Model A and $35 for Model B) which contains a RCA Video, HDMI, Audio, 256MB RAM, 700MHz CPU, and SD Card Reader.

For more information about the Raspberry PI, please visit the Raspberry Pi FAQ and the Raspberry Pi SE.

Schematics

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Image

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1700 questions
6
votes
3 answers

Intermittent ping times on a raspberry pi wifi access point

I have set up a raspberry pi as a wifi access point. At this point, all I want to do is ssh the rpi. I'm finding that the ssh sessions hang for 5-30 seconds ever 1 to 6 minutes or so. My laptop is the only client connected to the AP. If I set up…
Ivo
  • 61
3
votes
2 answers

arecord can't find the right device?

I've installed the respeaker pi hat module to my Rpi0W using sudo apt-get update sudo apt-get upgrade git clone https://github.com/respeaker/seeed-voicecard.git cd seeed-voicecard sudo ./install.sh reboot but cannot test whether it works - The…
neq
  • 113
2
votes
0 answers

How to find specific RPi image?

I need to replicate client's RPi setup as close as possible. I have output of uname -a on their RPi: Linux lumberjack 4.4.10-hypriotos-v7+ #1 SMP PREEMPT Fri May 20 14:49:10 UTC 2016 armv7l GNU/Linux How do I find same or closest RPi image? Thank…
BigMuzzy
  • 21
2
votes
5 answers

Where should I put `hciconfig hci0 up` for start up

I want to enable bluetooth device when system is up. Which is the recommended way to do it? The command is sudo hciconfig hci0 up. Should I put it in /etc/rc.local? or should I use update-rc.d? If there is no "proper" way to do it, I'll choose the…
ironsand
  • 5,205
1
vote
0 answers

Detect USB FT232R UART and run script

I have ser2net working perfectly with a USB FT232R UART (Creality 3D printer) using setserial to work with the higher speed of 250000 baud. The problem is that when I turn off the printer and turn back on, I have to run again the setserial commands…
EricVdB
  • 11
1
vote
0 answers

how to effectively troubleshoot why a raspberry pi is shutting down

I am using a raspberry pi 3 B+, and am using the official raspberry pi power supply along with a Logitech C270 HD webcam. I am attempting to stream video from this camera to a browser. I have done this successfully, but my raspberry pi keeps…
MattG
  • 113
1
vote
1 answer

Raspberry Gammu No response in specified timeout. Probably the phone is not connected

I use gammu with my TP-LINK dongle for a while in my Raspberry PI 3B+. Everything worked fine (after hard configuration). Yesterday I tried to change the SIM card and gammu stop working. So I switched and put the old SIM card again, tried a lot of…
ReaperSoon
  • 111
1
vote
1 answer

How to stop running two programs simultaneously on RPi

I have two active RPi's. They both have the script: adxl345test.py This script collects data from an accelerometer. I usually start the script on one RPi and then start the script on the other RPi. I run the scripts from both RPi's on one RPi. So…
user75374
  • 21
1
vote
1 answer

How to run two programs simultaneously on RPi

I have two active RPi's. They both have the script:adxl345test.py This script collects data from an accelerometer. I usually start the script on one RPi and then start the script on the other RPi. However now I want to start the scripts at the same…
user75374
  • 21
0
votes
2 answers

rm wildcard is not working on Raspberry Pi OS

I have the following directory listing: 0 -rw-r--r-- 1 root root 0 Sep 2 15:19 aws.greengrass.LambdaLauncher.log 0 -rw-r--r-- 1 root root 0 Sep 2 15:19 aws.greengrass.LambdaRuntimes.log 0 -rw-r--r-- 1 root root 0 Sep 2 14:53…
Eric Snyder
  • 103
0
votes
1 answer

Setup ssh & wifi on a headless Raspberry Pi 4 running Ubuntu 19.10

I've got RPI that I wanna ssh into for home projects. I don't own and do not intend to buy keyboard and monitor for it. I've played with it using raspbian, but wanted to try 64bit Ubuntu for few apps. With raspbian all I had to do is touch ssh file…
dzh
  • 101
0
votes
2 answers

How can I get a card reader to generate a file on scanning?

I have a Raspberry Pi 4 and an HID Omnikey 5427G2. When I scan a card, the card reader acts as a keyboard and types out a series of 7 digits that correspond to the card. This works fine, but it only types it out like it were a keyboard to text files…
Maxypoo
  • 1
0
votes
1 answer

An OS for Raspberry Pi 1 Model B (old Raspberry)

I'm looking for an OS for my old Raspberry; my goal is simply to launch a web browser with javascript support. I tried : raspbian latest version - but my rasp is too laggy (even the buster lite version) raspbian old version - but here, I can't…
Eva exe
  • 3
0
votes
0 answers

Disconnect and reconnect wifi via command line

I need to disconnect and reconnect the wifi of my RaspberryPi (Ubuntu) via SSH in order to test the error handling. I'm using: sudo ifconfig wlan0 down && ifconfig wlan0 up However, the connection does not appear to be reactivated, since I have to…
cheesus
  • 185
0
votes
1 answer

BerryBoot - Restart loop - Check your switch settings

I´m trying to install BerryBoot on a Raspberry Pi 3 but I only get this error up. Flow control seems to be disabled on your Ethernet switch. This can cause network performance problems on the Pi 3+. If possible change your switch settings to…
Plexus81
  • 111
1
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