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1500 questions
33
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
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33
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
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33
votes
4 answers
How do I install new software?
I am aware that Linux distributions usually have 'package managers' to allow me to download and install software from the command line, and that I should also be able to download and compile source code from the Web. But I am not sure about how best…
Andrew Fogg
- 5,913
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33
votes
9 answers
Libraries for interfacing with the GPIO
What libraries are available for interfacing with the GPIO?
ramblinjan
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- 33
- 52
33
votes
2 answers
How to program a USB device with Debian/Python
The Pi is being promoted as an educational device primarily for Python. Inline with this, there have already been some great examples online of people accessing the GPIO from Python.
However, most off-the-shelf (rather than home brew) peripherals…
winwaed
- 1,459
- 2
- 15
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33
votes
5 answers
Does the Raspberry Pi need a cooling system?
Searching on Newegg for "raspberry pi", the results included many heatsinks and as well as a few other types of cooling systems, yet these items do not seem to appear when looking through the stores of the official distributors.
Does the Raspberry…
IQAndreas
- 983
- 3
- 10
- 12
32
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
- 573
- 3
- 7
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32
votes
7 answers
Can I install Git on Raspbian?
Can I get Git on Raspbian to back-up my C/C++ files?
Do I need to download anything to use Git on my Raspberry Pi?
Where can I learn to use it?
user8709
32
votes
4 answers
How can I use I2C to talk to sensors?
How can I talk to digital sensors over the I²C interface?
Hardware:
Which pins on the Raspberry Pi's GPIO can I use?
Software:
What I²C libraries are available?
Alex L
- 7,605
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- 42
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32
votes
1 answer
What are the maximum operating temperatures of the components?
What are the main sources of heat on the board?
What temperatures do these components reach under load?
Alex L
- 7,605
- 12
- 42
- 53
32
votes
3 answers
Remove boot messages (all text) in Jessie
I have a custom python app that I wanted to have started automatically on the RPi with the official touch screen.
This used to work fine without a sleuth of boot messages appearing until the latest update in Jessie with the PIXEL desktop. My…
G Trawo
- 840
- 1
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32
votes
7 answers
Get CPU and GPU usage on Raspberry Pi
I am trying to figure out a good split for the CPU/GPU. Is there a way to monitor the CPU and GPU usage to see where I should make the split?
Scoop
- 2,679
- 7
- 27
- 25
32
votes
3 answers
Can I use OpenCV?
While the Raspberry Pi is not exactly a powerhouse, it should be capable of doing some OpenCV image or video processing. Has anyone tried to install it?
Avogado
- 609
- 6
- 9
32
votes
3 answers
How can I determine the current firmware version number?
Is there a way to find the current firmware version number? Either the running version or the version currently installed in /boot?
uname -a shows only the kernel version, not the GPU "binary blob."
Related: How do I update software and firmware?
finnw
- 5,790
- 3
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- 42
32
votes
6 answers
What is a typical boot time for the standard Debian distribution on a typical SD card?
How long does the RasPi take to boot when using the standard Debian distribution on a typical SD card? Are we talking less than a second? A couple of seconds? 10 seconds? 100 seconds?
This isn't too important for most users and applications, but…
winwaed
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- 2
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- 25