Difference between revisions of "Raspberry Pi"

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Revision as of 07:00, 12 April 2013

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Setup

Install OS on SD card

Purchase a verified SDHC cards - http://elinux.org/RPi_SD_cards
Follow EASY setup - http://elinux.org/RPi_Easy_SD_Card_Setup
resizing main partition from booted raspberry pi - http://elinux.org/RPi_Resize_Flash_Partitions

configuration

apt-get not connecting

add DNS server. see here:

http://www.raspberrypi.org/phpBB3/viewtopic.php?f=63&t=17016

vim instead of vi

vim instead of vi so arrow keys work:

sudo apt-get update
sudo apt-get -y install vim

bash configuration

edit .bashrc:
- uncomment ll and la

add a user account

while logged in as PI user:

sudo adduser MyUser
sudo adduser MyUser sudo

now it is time to test out your new account.

logout as pi:
- logout
at the login prompt, login as your username created above.
CONGRATS!
time to shut down your system:
- sudo poweroff type in your password. the system will shut down.

add audio for non-default user

getting audio to work for a non-default user:

sudo usermod -a -G adm,dialout,cdrom,sudo,audio,video,plugdev,games,users,netdev,input rtwomey
logout, then login

SSH Login

ssh login:

should work by default. you just need to know the IP address.
Connecting to a local mac with internet sharing on, it's probably 192.168.2.3, or 192.168.2.2.
Store your public key on the remote system, so you aren't prompted for password:

http://www.linuxproblem.org/art_9.html

not resolving IP addresses

sudo vi /etc/resolv.conf
add the line nameserver 8.8.8.8
- this is the google nameserver.

vnc remote

overclocking

using command line http://www.jeremymorgan.com/tutorials/raspberry-pi/how-to-overclock-raspberry-pi/
using raspi-config http://elinux.org/RPi_raspi-config

scp

to copy photos to my current computer, over ethernet cable:
- scp rtwomey@192.168.2.3:~/images/*.jpg ~/Pictures/
if you've stored your ssh public key, you won't be prompted for password!

Software

FM Transmitter

FM transmitter with python code - http://www.icrobotics.co.uk/wiki/index.php/Turning_the_Raspberry_Pi_Into_an_FM_Transmitter, cached
- this works!!
get file with wget:
- wget http://www.icrobotics.co.uk/wiki/images/c/c3/Pifm.tar.gz
unzip the file:
- tar -xvzf Pifm.tar.gz
What files were created extracted, and where did it put them?
- ls -la
Make a radio folder and move the files in.
- mkdir radio
- mv pifm.* radio

gphoto2

installing:
- sudo apt-get install gphoto2
take a photo:
- gphoto2 --capture-image-and-download
after taking a photo it's necessary to reset the USB port. use usbreset util.
- usbreset /dev/bus/usb/001/004
- put your /dev/bus/usb device as the second argument above. you can find it from --list-ports.
list cameras:
- gphoto2 --list-ports
control and capture of DSLR http://skowron.biz/artikel/gphoto-raspberry/

usbreset

build by hand: http://toothbrushsymphony.blogspot.com/2013/01/usb-reset-on-raspberry-pi.html
apt-get?

festival

festival on raspberry pi - http://elinux.org/RPi_Text_to_Speech_(Speech_Synthesis)
see http://wiki.roberttwomey.com/Setting_Up_Festival_TTS#Using_Voice_on_Raspberry_Pi

pocketsphinx

megahal

try it -

supercollider

installing on rpi: http://sam.aaron.name/2012/11/02/supercollider-on-pi.html
example install directory: /usr/share/doc/supercollider/examples/
http://new-supercollider-mailing-lists-forums-use-these.2681727.n2.nabble.com/SC-on-Beagle-Board-Raspberry-Pi-td7581949.html
satellite CCRMA - https://ccrma.stanford.edu/wiki/Satellite_CCRMA_First_Steps

nltk

http://www.raspberrypi.org/phpBB3/viewtopic.php?f=9&t=6097
install setup tools
- wget https://pypi.python.org/packages/2.7/s/setuptools/setuptools-0.6c11-py2.7.egg#md5=fe1f997bc722265116870bc7919059ea
- sudo sh setuptools-0.6c11-py2.7.egg
install pip
- sudo easy_install pip
install numpy (precompiled binary)
- sudo apt-get install python-numpy
install nltk
- sudo pip install nltk --upgrade
run nltk
- run python then type import nltk

OpenCV

http://www.technolabsz.com/2013/03/how-to-easily-install-opencv-on.html

hd video playback

omxplayer http://elinux.org/Omxplayer
- play a file: omxplayer -o hdmi ~/Movies/robot_playing_catch.mp4
play script: http://www.raspberrypi.org/phpBB3/viewtopic.php?t=9789&p=112154

Hardware Peripherals

Verified Peripherals - http://elinux.org/RPi_VerifiedPeripherals

Pi Foundation Camera Module

code: https://github.com/raspberrypi/userland/tree/master/host_applications/linux/apps/raspicam

C-Media USB sound device

setup C-media usb sound device - http://www.cpmspectre.pwp.blueyonder.co.uk/raspberry_pi/MoinMoinExport/DaffodilUSBSoundAdapter.html

C920

USB packet loss (90% of frames)

microline 320 printer

installing

install cups
- sudo apt-get install cups
- will take a little while
install menu item:
- sudo apt-get install system-config-printers
reboot
add printer
- start ltxde:
  - startx
- Select Menu->Preferences->Printing
- Printer should autodetect. Or you can enter the URI manually: parallel:/dev/usblp0
- Change model to Generic, type Raw. This will pass raw data to printer.
http://ubuntuforums.org/showthread.php?t=1436079&page=2

command line

printing
- cat myTextFile.txt | lp -oraw
list printers
- lpstat -p -d
lp help http://www.cups.org/documentation.php/options.html

untested

Processing - http://forum.processing.org/topic/processing-on-raspberry-pi
webcam streaming - http://sirlagz.net/2012/08/04/how-to-stream-a-webcam-from-the-raspberry-pi/
opencv - http://mitchtech.net/raspberry-pi-opencv/
julius - http://www.aonsquared.co.uk/raspi_voice_control

Problems

raspberry pi resets audio device after recording begins. similar to this complaint - http://www.raspberrypi.org/phpBB3/viewtopic.php?t=12086&p=135385

Uses

Retrieved from "http://wiki.roberttwomey.com/index.php?title=Raspberry_Pi&oldid=5283"

@@ Line 63: / Line 63: @@
 =Software=
 ==FM Transmitter==
-*FM transmitter with python code - http://www.icrobotics.co.uk/wiki/index.php/Turning_the_Raspberry_Pi_Into_an_FM_Transmitter
+*FM transmitter with python code - http://www.icrobotics.co.uk/wiki/index.php/Turning_the_Raspberry_Pi_Into_an_FM_Transmitter, [https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CDYQIDAA&url=http%3A%2F%2Fwebcache.googleusercontent.com%2Fsearch%3Fq%3Dcache%3A2sSuOAJQhN4J%3Awww.icrobotics.co.uk%2Fwiki%2Findex.php%2FTurning_the_Raspberry_Pi_Into_an_FM_Transmitter%2B%26cd%3D1%26hl%3Den%26ct%3Dclnk%26gl%3Dus&ei=hRNoUdL8BOjNiwKcyoHQDQ&usg=AFQjCNGyc_GeDwSk8vkDfCza2kXyzizQQg&sig2=KDBObi8f6eNfyZo8TMYJOg&bvm=bv.45175338,d.cGE cached]
 **this works!!
 *get file with wget:
@@ Line 69: / Line 69: @@
 *unzip the file:
 **<code>tar -xvzf Pifm.tar.gz </code>
-*Where did it put the file?
+*What files were created extracted, and where did it put them?
 **<code>ls -la</code>
-*Make a Pifm folder and move the files in. Or alternately, unzip the files into the folder.
+*Make a '''radio''' folder and move the files in.
-**<code>mkdir pifm</code>
+**<code>mkdir radio</code>
-**<code>tar -xzvf Pifm.tar.gz pifm</code>
+**<code>mv pifm.* radio</code>
 ==gphoto2==