Most Popular
1500 questions
139
votes
5 answers
How to set up swap space?
Raspberry Pi has only 256 MB of RAM, so I would like to use swap space (either on SD card or attached USB storage). How do I set it up?
user13
138
votes
9 answers
How do I install Google Chrome?
When I go to download Google Chrome from http://www.google.com/chrome in Midori on the Raspberry Pi , I am presented with a modal dialogue box,
Please select your download package:
32 bit .deb (For Debian/Ubuntu)
64 bit .deb (For…
Andrew Fogg
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- 8
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130
votes
7 answers
How can I determine which OS image I am running?
I have been given a pre-installed SD card. It boots fine, and I know it is running some version of Raspbian. Can I determine exactly which release it is running?
user6899
127
votes
9 answers
How do I supply power through the GPIO?
I have seen some examples of people powering their Raspberry Pis by wiring a DC "barrel plug" style power supply to the 5V and GND GPIO pins.
What considerations should be taken when doing something like this? Do I need to add any protective…
BitBobBang
- 1,271
- 2
- 9
- 3
123
votes
20 answers
Find Raspberry PI address on local network
I need to find the Raspberry PI IP address on local network without connect the Raspberry to a monitor. How do I do it on Linux or Mac OS systems?
J. Costa
- 2,613
- 3
- 16
- 12
122
votes
5 answers
What does the lightning bolt mean?
There is a lightning bolt icon flashing on the top right of my screen. What does it mean?
Here's a picture:
j0h
- 2,508
- 6
- 27
- 36
121
votes
15 answers
How to stream video from Raspberry Pi camera and watch it live
I am new to the Raspberry Pi and even new to the Raspberry Pi camera. I have seen a lot of tutorials online for the Raspberry Pi camera but have yet to find on that lets me stream straight from the Raspberry Pi camera like you can with a webcam…
BuddingEngineer
- 1,379
- 4
- 11
- 8
116
votes
2 answers
How do I force the Raspberry Pi to turn on HDMI?
I have a Raspberry Pi running Raspbmc connected through HDMI to a dumb HDTV. (Does not support HDMI-CEC).
If I power on both the TV (both at source and display through remote) and Raspbmc at the same time then it all works fine.
If I power on the…
Ashwin Nanjappa
- 1,355
- 2
- 11
- 10
114
votes
5 answers
Can I use the GPIO for pulse width modulation (PWM)?
Can I use the GPIO as a pulse-width modulation output?
If so, how would I go about doing it and how many concurrent, distinct PWM outputs can I have?
berry120
- 10,984
- 11
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- 63
111
votes
14 answers
How can one control AC power (220V) with a Raspberry Pi?
I though about using the Raspberry Pi to switch on and off other electrical devices which unnecessary consume power in stand-by mode. In short, I'd like to control an AC socket or multiple sockets. How can one let the computer "push the…
Jakob
- 2,768
- 5
- 23
- 22
108
votes
5 answers
Can I use the GPU for calculations?
Is it possible to use the GPU for calculations? (e.g. CUDA/OpenCL)
Alex L
- 7,615
- 12
- 44
- 53
106
votes
11 answers
How do I build a UPS-like - battery backup - system?
As we all know, the Raspberry Pi doesn't really use that much power (5v + 700mA is the spec).
I'd like to build a battery backup for power outages in a DIY-ish fashion. I don't need surge protection or any other fancy options, just security from…
Riku L
- 1,163
- 2
- 8
- 6
104
votes
3 answers
Boot without starting X-server
During the installation of Raspian I chose "Start X-Server after boot", but now I want to boot it once without starting the X-Server, so I've got more memory to run a program.
How do I boot without starting the X-Server?
Stein
- 1,778
- 3
- 14
- 13
104
votes
2 answers
How to run Raspbian on VirtualBox?
I have tried Debian on VirtualBox and would like to check out Raspbian. How do I install Raspbian on VirtualBox?
JeeShen Lee
- 1,415
- 2
- 10
- 10
103
votes
3 answers
How do I update software and firmware?
I understand that the software on the Raspberry Pi is divided into three sections: the closed-source GPU firmware, the patched ARM Linux kernel and the user space software.
Is the GPU firmware on the chip or SD card?
Is there an easy way to update…
Alex L
- 7,615
- 12
- 44
- 53