Raspberry Pi Stack Exchange
Raspberry Pi Stack Exchange

Most Popular

more tags
1500 questions
35
votes
3 answers

How to install unrar-nonfree?

I installed unrar-free, but I cannot extract a multi-file .rar archive (my_archive.part01.rar, my_archive.part02.rar, etc.): $ ls my_archive.part01.rar my_archive.part02.rar my_archive.part03.rar $ unrar -x my_archive.part01.rar unrar 0.0.1 …
Morgan Courbet
  • 3,703
  • 3
  • 23
  • 38
35
votes
1 answer

What do the LEDs on the B+ mean?

Not a duplicate of this RPi.SE question, as I'll explain in a moment. GPIO.RPI_REVISION returns 3. As far as I can tell, looking at my B+, there are no LEDs labeled: OK, FDX, LNK or 10M. There are two embedded in the Ethernet port, and two on the…
PythonNut
  • 566
  • 1
  • 6
  • 12
34
votes
3 answers

Running Headless - checking boot screen messages

It's fairly easy now to run headless from scratch with a Raspberry Pi. One area that might have an issue though is debugging issues with devices that have been added to the Raspberry Pi. Often you get indication of these problems in the messages…
Jon Egerton
  • 3,083
  • 2
  • 24
  • 32
34
votes
6 answers

Powering a PI from 12V

I'm thinking of installing my Pi down at my wife's stables which have a 40W solar charged 12V DC lighting circuit. Since the Pi runs at 5V I'm thinking that a quick and easy way to step down the voltage safely would be to use a microUSB mobile phone…
DaveG
  • 443
  • 1
  • 4
  • 6
34
votes
3 answers

Hooking up a Kinect?

There is a driver project established to run Kinect on Linux. See here: https://github.com/OpenKinect/libfreenect Will this work with an RPi? What are the constraints/obstacles likely to be? I'm thinking this would be a real help for an ambitious…
Jon Egerton
  • 3,083
  • 2
  • 24
  • 32
34
votes
5 answers

What SPI frequencies does Raspberry Pi support?

What SPI frequencies does Raspberry Pi support? Additionally: Are they all supported by the bootc.net SPI driver? Are there any additinal things I should be cautious about when trying to communicate with some other chip via SPI?
akavel
  • 1,256
  • 3
  • 12
  • 15
34
votes
7 answers

Undervoltage warning despite decent power supply

I found some related questions about this, yet no answer. Using a freshly bought "5V/2.1A" rated power supply, I get undervoltage warning icon on both my Raspberry Pi 3s. I measure 4.75V at the USB ports. I feel like this should not be happening.
LDericher
  • 449
  • 1
  • 4
  • 3
34
votes
8 answers

How to safely switch off the Raspberry Pi?

Usually with a desktop computer, if I run sudo shutdown -P now, the computer switches off completely and I can switch it back on again with a button. (Likewise, if the computer crashes, I can force a restart by holding down the power button for 5…
George Simms
  • 513
  • 1
  • 5
  • 6
34
votes
10 answers

Running a Python script at startup

This question has been asked quite a few times before but I didn't seem to get it working using the existing information. My Pi runs Raspbian. I have a Python script named dnscheck.py which loops forever. I need it to run at boot. I know I have to…
Vlad Schnakovszki
  • 1,271
  • 2
  • 15
  • 17
34
votes
3 answers

What speed can I expect from the hardware-H264-encoding?

I stumbled over the Wikipedia-article that the Broadcom GPU has hardware support for encoding H.264/AVC, not only de-coding. I also found an article where someone gave an example using ffmpeg to generate a h264/mp4 video files. Ok, its a…
towi
  • 545
  • 2
  • 5
  • 8
34
votes
9 answers

USB Cables... Why are some of them bad for Raspberry Pi?

Yesterday I bought another Raspberry Pi, and installed Rasplex on it. While using Rasplex, I got this colored square on the top-right corner, indicating that the power supplied to my Raspberry Pi is not sufficient, although I was using an Anker…
The Quantum Physicist
  • 603
  • 2
  • 7
  • 15
34
votes
2 answers

What's the difference between the Raspberry Pi 1 Model B and B+?

I have a Model B Raspberry Pi, but what are the differences between this and the new Model B+? Also apart from the physical differences, what could I do with a B+ that I can't do with my Model B?
dmeehan
  • 599
  • 3
  • 7
  • 12
34
votes
10 answers

Can I install Windows?

I recently bought a RPi and it came with Debian, which I think is a Linux distribution. I'm more used to Windows; can I install it?
Alex Chamberlain
  • 15,638
  • 15
  • 69
  • 113
34
votes
6 answers

Recommended GUI toolkit for Python development on the Raspberry Pi

I am teaching my daughter Python (and myself to some degree) using the Pi, and we have had a great time so far - but the CLI can only take us so far. I have started looking at other toolkits, specifically wx, Qt and GTK. These all seem to have great…
Goyuix
  • 755
  • 2
  • 7
  • 13
33
votes
1 answer

Does the Pi 4 resolve the Ethernet+USB bottleneck issue of past versions?

The Pi 3 (and previous models) had an issue of bottlenecked bandwidth when using Ethernet and USB simultaneously. Is this resolved in the Pi 4?
Wolf
  • 583
  • 3
  • 7
  • 16
1 2 3
…
99 100