Raspberry Pi Stack Exchange
Raspberry Pi Stack Exchange

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1500 questions
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4 answers

Shorted 3.3v + 5v together. Is it possible to repair?

I was reading through some instructions on how to add a power off/on button to the Pi and accidentally misread instructions and shorted the two end pins on a 3+B model, which appear to be 3.3v and 5v. It doesn't appear to boot now and I just see a…
Elijah Lynn
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How to set up "kiosk" mode in Raspbian?

I want to set up my Raspberry Pi in a sort of "kiosk" mode where it boots up into a single full screen application. I know my way around the command line, but am a novice when it comes to customizing linux boot behavior. I am building the…
Andrew
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Overclocking via command line

I'm setting up a Puppet instance that will manage a bunch of RPis. This means I cannot overclock them one by one using raspi-config. Overclocking should be as simple as creating /boot/config.txt: root@rpi-032113 ~ # file /boot/config.txt…
Tuinslak
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3 answers

How do I auto-hide the taskbar?

Is it possible to configure the taskbar to auto-hide after a certain period of time in Raspbian “wheezy” soft-float? I was able to do something similar for the cursor by downloading a application called "unclutter". Is there any way to do this for…
TopCaller
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3 answers

Homebrew Power Supply for Raspberry Pi

I was wondering what precautions I should be taking when I am making a PSU. I managed to find an old dc adapter. These are the parts I currently have. | no | name | specs | |----+----------------+--------------------| | 1 |…
feverDream
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3 answers

What is the MTBF of the Raspberry Pi Model B?

What is the mean time before failure (MTBF) for a Raspberry Pi Model B? I can't seem to find this information anywhere. I have an idea for a kind of art project that would require one to run as long as possible, and I want to have some idea of how…
Kaypro II
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4 answers

Raspbian 8 on Raspberry Pi 3 B+

How can I can use my old Raspbian 8 (Jessie) SD card installation on the Pi 3 B+? I changed files in /boot. (start.elf, start_cd.elf, start_db.elf, start_x.elf, bcm2708-rpi-0-w.dtb, bcm2708-rpi-b.dtb, bcm2708-rpi-plus.dtb, bcm2708-rpi-cm.dtb,…
medismail
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3 answers

How do I restart sshd on raspbian?

How do I restart sshd on raspbian stretch? This does not work: pi@raspberrypi:~/.ssh $ sudo systemctl restart sshd Failed to restart sshd.service: Unit sshd.service not found.
Jarle Hammen Knudsen
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4 answers

Powering the raspberry Pi from USB + microUSB, is it safe?

I want to power a Pi model B from a powered USB hub. I got surprised that the Pi powers on with only the USB attached. A little search in the forums confirmed me that it is a working solution. I measured the voltage between TP1 and TP2 and it says…
Alessandro Da Rugna
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How do I install distcc?

I have read How to build a GCC 4.7 toolchain for cross-compiling? and have successfully built a simple test program that works on my RPi. To do this, I had to run arm-unknown-linux-gnueabi-gcc hello.c -o hello on my x86 desktop and scp the…
Alex Chamberlain
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5 answers

How to display an image via ssh?

I have connected to my raspberry via ssh from another pc. I would like to show an image that is on my raspberry to the screen of my PC. I tried to follow the answer of this question by astrogeek. Suppose my raspberry user is pi and the user pc is…
Francesco Boi
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2 answers

How to exit a python daemon cleanly?

I want a simple python script to run in background, therefore I configured daemon test.service in /etc/systemd/system/. [Unit] Description=Test service After=multi-user.target [Service] Type=simple ExecStart=/usr/bin/python…
EarlyEarl
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2 answers

How to configure serial port settings of /dev/ttyAMA0?

I want to access the serial port by some BASH script files via /dev/ttyAMA0. How do I configure the serial port settings like speed, parity even/odd?
Robert
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2 answers

Controlling 400 LEDs from a raspberry pi

I have a client who has several large bronze signboards, each with 100-150 little light bulbs on it, totaling approximately 400 bulbs. The bulbs are turned on and off on a schedule, currently by hand (partially unscrewing the bulbs that are not…
Moshe Katz
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1 answer

How to make a simple, reliable 15-second UPS for shutdown?

Use case: On power loss, the pi is to gracefully close all I/O (already kept to a minimum) and shut down, to be manually rebooted later. A supercapacitor works (I think; not sure of voltage near the end) but reboots the Pi (not sure why exactly). A…
kaay
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