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1500 questions
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
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- 69
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
- 2,271
- 7
- 31
- 49
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
- 401
- 4
- 6
29
votes
2 answers
How do I encrypt my Raspberry?
The Raspberry is all well and nice and can run pretty quick. But how can I protect my SD card from offline data attacks. SSH can be protected with a good password or a SSH key but if somebody gets hold of the card I would like it to be encrypted in…
WillyWonka
- 537
- 1
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- 13
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
- 1,107
- 3
- 9
- 22
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
- 395
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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
- 4,048
- 4
- 29
- 31
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
- 1,351
- 3
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- 14
28
votes
3 answers
What's the difference between UUID and PARTUUID?
I've followed the procedure in the raspberry pi forums to make my Raspberry Pi 3 use an USB key instead of the SD card as root filesystem in the hope to make it more robust to power loss.
The process worked, but I lost time because I confused UUID…
AProgrammer
- 383
- 1
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28
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
- 381
- 1
- 3
- 3
28
votes
1 answer
Raspberry Pi Zero with Ethernet Over HDMI
The new Raspberry Pi Zero doesn't have any kind of wired Ethernet connection. Has anyone have tested if Ethernet over HDMI works? I did not find any info in the web or even what version of HDMI the Raspberry Pi Zero uses.
Gioce90
- 383
- 3
- 6
28
votes
8 answers
Can't get a CIFS network drive to mount on boot
I have added a share in fstab to access a network drive with all my files on... fstab looks like:
proc /proc proc defaults 0 0
/dev/mmcblk0p1 /boot vfat defaults 0 2
/dev/mmcblk0p2 / ext4 defaults,noatime 0 1
//192.168.1.73/disk1 /media/disk1 cifs…
Luke Twomey
- 383
- 1
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- 5
28
votes
4 answers
What are the RUN pin holes on Raspberry Pi 2?
Inbetween the Display port, and the Activity LED on my Raspbery Pi 2, There are 2 holes boxed off, labled with: "Run".
What are those pins? What do they do? Is it a reset?
j0h
- 2,473
- 6
- 25
- 34
28
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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