Raspberry Pi Stack Exchange
Raspberry Pi Stack Exchange

Most Popular

more tags
1500 questions
10
votes
3 answers

Bluetooth scan usin "hcitool scan" returns no results (Hama 00049229)

When I run hcitool scan the shell shows Scanning... for ~10 sec but doesn't show any results. Same for sudo hcitool scan (I have an Android phone and a PC nearby with bluetooth activated and set to visible) (It did work the first time; I didn't…
gizmo
  • 109
  • 1
  • 1
  • 5
10
votes
3 answers

Underclock raspberry pi without rebooting

I want to reduce the frequency of operation of my raspberry pi without rebooting. Is there a way to do it ?? I know I can change the frequency by changing the config.txt but it requires a reboot.
maverick
  • 109
  • 1
  • 1
  • 4
10
votes
6 answers

Python and OpenSSL error on import

So I'm trying to add SSL to my web server running on my pi B+ (using cherrypy) I made sure that OpenSSL was installed with: sudo apt-get install openssl Then I installed pyOpenSSL with: sudo apt-get install python-openssl In both cases it…
jrel
  • 225
  • 1
  • 2
  • 8
10
votes
4 answers

Upgrading from Pi to Pi2

I've got a regular Raspberry Pi B board, running Raspbian off the SD card. What I would like to know is if I buy one of the new Raspberry Pi 2 boards, can I just swap the card over to the new one, and will everything run as is, or do I need to do…
Chris G. Williams
  • 388
  • 2
  • 11
10
votes
1 answer

Rapberry pi camera module vs usb camera

Is it good to use raspberry pi camera module for serious computer vision project using video or is it okay to use a usb webcam?
parthi82
  • 335
  • 2
  • 4
  • 10
10
votes
2 answers

Turn LED on and off with switch

I'm trying to write code to get an LED to turn on when it is off and to turn off when it is on using a tactile push button switch. I've written what I believe to be is the right code with the wiringPi library, but I can only get it to turn on when…
Mark Luna
10
votes
2 answers

Mount windows share: Bad UNC

I am trying to mount a windows share using this command: sudo mount -t cifs -o username=USERNAME,password=PASSWORD \\192.168.2.12\TestShare mnt/ But it is giving me this error: mount.cifs: bad UNC (\192.168.2.12TestShare) I have also tried these…
Black Magic
  • 203
  • 1
  • 2
  • 6
10
votes
3 answers

What format should my SD card be?

I've downloaded my raspian disk image, and I'm going to write it to my micro sd card for use with my raspberry pi. I'm going to use Partition Image 0.6.8 to write the disk image to the card. Is this all I need to do? Using GParted, I've noticed the…
Starkers
  • 213
  • 1
  • 2
  • 5
10
votes
1 answer

Connecting to WPA2-Enterprise Wifi Network

I'm currently trying to connect to my University wifi network and it's of WPA2-Enterprise type. I found the setup instructions online and I followed them when setting it up using wpa_supplicant. The picture above is the settings the school suggests…
jengafenga
  • 101
  • 1
  • 1
  • 5
10
votes
3 answers

Official MongoDB Repo for ARM Processor for Debian base

Is there an official MongoDB repo for the Raspberry Pi Following: http://docs.mongodb.org/manual/tutorial/install-mongodb-on-debian/ Got this issue: W: Failed to fetch http://downloads-distro.mongodb.org/repo/debian-sysvinit/dists/dist/Release …
Phill Pafford
  • 239
  • 1
  • 3
  • 9
10
votes
3 answers

Cambridge University Raspberry Pi Operating system development Guide Questions

I'm a high level app developer (C#, python) and I'd like to get my hands dirty with low level embedded application development. Cambridge University has posted a series of tutorials teaching you how to create an operating system for the Raspberry Pi…
ArmenB
  • 235
  • 2
  • 12
10
votes
6 answers

Empty desktop after typing "startx"

I've flashed a 2GB SD card with the Raspbian wheezy image from http://www.raspberrypi.org/downloads, which boots up fine, but after typing "startx", I'm facing an empty desktop with the raspberry logo; nothing further happens. The pointer moves, I…
rasper
  • 276
  • 1
  • 3
  • 7
10
votes
3 answers

Can I use an Amazon Kindle Fire power supply?

So i have a spare Kindle Fire power adapter: it's quoted as 5V @ 1.8A. I haven't tried as I don't really want to risk blowing it up!
yee379
  • 109
  • 1
  • 3
10
votes
3 answers

Pi Camera - how to create a flash?

I have a need to take photos with the Pi camera, but to illuminate the subject. The subject will be 1m or so away, but will be in total darkness most of the time. Therefore, I need a flash of some kind. I'll only be taking a picture every hour or…
fistameeny
  • 201
  • 1
  • 2
  • 3
10
votes
5 answers

How can I access my Raspbian Wheezy installation via SSH? Is it enabled by default?

Is SSH enabled by default on the Raspbian Wheezy 7 install image? And if it is, which IP address is used so I can access Pi via PuTTY and Filezila? Important! As per Philippe Lhardy's answer current (post ~2016) versions of Raspbian do not have…
zsn
  • 431
  • 2
  • 6
  • 13
1 2 3
…
99 100