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1500 questions
29
votes
5 answers
Circuit to safely power-down Pi
I want to use my Pi as an XBMC server in the car. The XBMC docs say that you should always use the shutdown command before disconnecting the power.
I've been thinking that it should be possible to create a simple circuit with a capacitor and…
Nicholas Albion
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29
votes
5 answers
Having launched X, can I shutdown without a mouse?
I've launched into X using startx, but now can't shutdown my pi, as I have no mouse, and I can't seem to access anything with the keyboard alone. What can I do?
Tom Medley
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29
votes
3 answers
Where to find old Raspbian release?
I need an old Raspbian release, precisely rpi_35_v3_jessie8_kernel_4_1_12.img. On the download page raspberrypi.org I can only find the latest release.
Is there any way to get the old release mentioned above?
Socrates
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29
votes
4 answers
Unable to reconfigure locale in raspberry pi
When I boot pi it it throws the following warnings:
-bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
-bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
->bash: warning: setlocale: LC_ALL: cannot change…
aayu5h
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- 3
29
votes
9 answers
How can I control an RC servo?
I'd like to control a small RC servo (5 V, 500 mA) from the GPIO pins via Python.
Hardware
What are the required electrical connections?
Can I connect multiple servos to the Raspberry Pi?
Are there any current limitations? Do I need to buffer the…
Alex L
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29
votes
7 answers
Why does the Raspberry Pi not have a power button?
If you buy a computer you expect it to come with a power button. So why does the Raspberry Pi not have one? Is it because it would take up too much room or be awkward to fit on the PCB?
Personally the lack of a power button is something which has…
Darth Vader
- 4,218
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29
votes
6 answers
How to setup Network Manager on Raspbian
Is it possible to get Network Manager working on Raspbian? It's easy to install with:
sudo apt-get install network-manager
but I couldn't get it to manage any of my connections. Unfortunately, it looks like only a old version of NM is available in…
Cerin
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29
votes
2 answers
Power a 5V relay from GPIO pins
I have a bank of relays (5) that I'm looking to run from my Pi. I'm using 5V TE Connectivity relays, powered by Sparkfun's high power relay kits, which use a NPN transistor to trigger the relay.
So far the problem I'm having is I can't get the…
hightekjonathan
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29
votes
4 answers
What is the difference between Model A and Model B?
There are hardware differences and peripheral differences. What can be accomplished or run on a Model B that cannot be done with a Model A? Are expansion boards being designed to be compatible with both? When available, other than cost, is there…
ramblinjan
- 4,090
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29
votes
2 answers
Can the Raspberry Pi be used commercially?
I am looking for a cheap computer to distribute with my software & hardware. This will make convincing small businesses to change its platform easier. Instead of buying a $300+ computer, give them a $30 Raspberry Pi...
Since the vision of the RPi…
ISJ
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29
votes
1 answer
How do I update OpenSSL on Raspbian
It seems like Raspbian has not been updated yet to deal with the Heartbleed bug. sudo apt-get update then sudo apt-get upgrade doesn't update anything (this is a system which was freshly updated yesterday so it is all up to date otherwise).
When I…
Jamie Bull
- 1,137
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29
votes
7 answers
How to disable "Wi-Fi is currently blocked by rfkill." message?
I do not want to see the following message when I login to my Pi (5.10.17-v8+ #1403 SMP PREEMPT Mon Feb 22 11:37:54 GMT 2021 aarch64 GNU/Linux):
Wi-Fi is currently blocked by rfkill.
Use raspi-config to set the country before use.
How can I make it…
Gordon Fogus
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29
votes
3 answers
Where is the archive.key for backports.debian.org?
I'm trying to follow the instructions here in order to install puredata on my Pi. I'm getting the following error:
W: GPG error: http://backports.debian.org squeeze-backports Release: The following signatures couldn't be verified because the public…
Johnny
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29
votes
1 answer
What happens during the boot process?
What happens during the boot process after the Raspberry PI is turned on? I know that it differs from the standard Linux boot process ( no complex boot manager like Lilo/Grub ), I also know that the boot process has several steps, the device loads…
asalamon74
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29
votes
4 answers
Which locale should I select during the Raspbian setup?
I've downloaded the newest Raspbian release and it is a little bit different than the original one.
In particular, it gives a whole bunch of options to configure it the first time you boot it up. I'm just trying to do something simple like change…
EGHDK
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