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1500 questions
45
votes
6 answers
How to attach an Arduino?
The Arduino website sums it up as
Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive…
Lucas Kauffman
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45
votes
7 answers
Speech processing on the Raspberry Pi
I want to do speech processing on Raspberry Pi to detect specific people (something like unique identification).
I would prefer to use only the on-board processor for this, you could assume that internet is not accessible.
Also, what are the…
Ruthvik Vaila
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44
votes
5 answers
What do system LEDs signify?
There are 5 status LEDs on the Raspberry Pi board. While I can guess what the POWER LED signifies (the power being attached), I am not sure about other four.
So, what do OK, FDX, LNK and 10M signify?
user13
44
votes
5 answers
How Raspbian Detects Under Voltage
How does the Pi know it being underpowered and to show the lighting bolt?
As most of us know, if you use a bad power supply you get the lightning bolt telling you are underpowered.
I noticed that when I run my Pi on battery, the last 15 minutes or…
NULL
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44
votes
6 answers
How do I update my RPi3 to Python 3.6?
Python 3.6 just came out. I tried following these instructions to build from a tarball, but it got hung up on the make command, so I terminated the process after 20 minutes or so.
I also noticed that while the ./configure command was going, a number…
Justin Palmer
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44
votes
7 answers
How to install the Java JDK on Raspberry Pi
I am an experienced Java programmer who received the Raspberry Pi for Christmas. Unfortunately, it appears that only Python is installed in it. What command do I type at the start command line where I would usually type startx to install the JDK and…
imulsion
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44
votes
7 answers
Is it possible to set up a Raspberry Pi as a wireless router?
When using the Ethernet and a wireless adapter, is it possible to set up the device as a wireless router? If so, what software (and/or additional hardware) would be needed?
ramblinjan
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44
votes
3 answers
Why does the Raspberry Pi need a MPEG-2 licence?
Since August 24 2012, it is possible to buy a licence to hardware-decode MPEG-2 videos.
Here are my questions:
Does it mean that, without this licence, the RPi cannot handle at all MPEG-2 video, or it will struggle to play it smoothly?
In what form…
Morgan Courbet
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44
votes
13 answers
Raspbian keyboard layout
I want to set my keyboard settings to Swedish, but on the Raspbian configuration tool my keyboard is not on the list.
Update: Changing XKBLAYOUT to "se" doesn't work. And internationalization in raspi-config doesn't either. My keyboard is a Logitech…
justanotherhobbyist
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43
votes
4 answers
Is it possible to run .NET code on the Pi using mono?
Is it possible (and feasible) to run .NET applications on the Raspberry Pi with Mono?
If so, how well do they run? Is a basic GUI usable, or does poor performance realistically restrict it to command line applications?
berry120
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43
votes
2 answers
Open chromium full screen on start up
I would like to set up a couple of Raspberry Pis to open automatically chromium or any other browser available to at start-up, and in full screen mode.
I was wondering if any of you can help me. These will be placed as some fixed stations where I…
Catalin
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43
votes
6 answers
Does the Raspberry Pi have Hardware Floating Point support?
There are a few articles around that say it is best to use soft float algorithms on ARM devices, because very few ARM chips have hard float coprocessors. So, does the RPi have hard float support? If so, is it quicker that soft float? (It should be,…
Alex Chamberlain
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43
votes
2 answers
What kind of performance can I expect from using a Raspberry Pi as a webserver?
Has anyone done some web server benchmarking on their Raspi? I don't have my Raspi yet but I'm planning on using it as a web server and I'm interested to see stats for:
Number of requests per second
Latency response time between…
ToniWidmo
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43
votes
6 answers
Starting ssh automatically at boot time
I'm following a number of tutorials that explain how to setup an SD card that boots automatically enabling ssh in the process. I'm doing this as I only have a laptop and no spare keyboard, screen, etc. My problem is I cannot find the…
Noel Evans
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43
votes
4 answers
Disable USB wifi sleep/suspend
Whenever I leave my Raspberry Pi on overnight, it always seems to have entered some kind of suspended state. The red power light is still on but the light on the USB WiFi device is off and I can't access it with SSH.
I have no peripherals attached…
dgrant
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