OV7670

http://www.raspberrypi.org/phpBB3/viewtopic.php?uid=25856&f=44&t=11839&start=0

DHT11/DHT22

BlinkM + i2c

http://www.raspberrypi.org/forums/viewtopic.php?t=11969

CEC - control your TV

http://www.raspberrypi.org/forum/viewtopic.php?f=35&t=15749

root@raspberrypi:/home/pi# git clone https://github.com/Pulse-Eight/libcec.git
root@raspberrypi:/home/pi# cd libcec/
root@raspberrypi:/home/pi/libcec# apt-get install autoconf automake libtool liblockdev1-dev libudev-dev libraspberrypi-dev
root@raspberrypi:/home/pi/libcec# sh -x bootstrap
root@raspberrypi:/home/pi/libcec# ./configure --with-rpi-include-path=/opt/vc/include/ --with-rpi-lib-path=/opt/vc/lib/

##############################################################################

libCEC version 2:1:0 configured

Compilation flags:
  CXXFLAGS :       -g -O2 -fPIC -Wall -Wextra -Wno-missing-field-initializers  -Wno-psabi
  libCEC LDFLAGS : -lbcm_host -llockdev -lrt -ldl -lpthread  -L/opt/vc/lib/ -lvcos -lvchiq_arm -ludev  
  client LDFLAGS : -lrt -ldl -lpthread 

Configured features:
  Pulse-Eight CEC Adapter :             yes
  Pulse-Eight CEC Adapter detection :   yes
  Raspberry Pi support :                yes
  TDA995x support :                     no

You can now build libCEC by running:
  make

##############################################################################

make install

TV on

pi@raspberrypi ~ $ echo "on 0" | cec-client -s

Hints from forum

screen saver

http://www.raspberrypi.org/phpBB3/viewtopic.php?p=84831#p84831

# prevent screensaver from powering down display
setterm -blank 0 -powerdown 0 > /dev/tty0

# clear the display and turn off the flashing cursor
clear > /dev/tty0
setterm -cursor 0 > /dev/tty0

# turn the cursor back on when done with omxplayer
setterm -cursor 1 > /dev/tty0

YouTube transcoding in VLC

http://www.raspberrypi.org/phpBB3/viewtopic.php?p=163658#p163658

cvlc 'youtube.com/watch?v=XXXXXXXXXX' :sout='#transcode{vcodec=h264,vb=0,fps=0,scale=0,height=720,acodec=mp4a,ab=128,channels=2,samplerate=44100}:http{mux=ffmpeg{mux=flv},dst=:8080/youtube}' :sout-keep

Education materials

Raspberry Pi Accessories Starter Kit

http://www.conrad.com/ce/en/product/409208/Raspberry-Pi-Accessories-Starter-Kit?ref=searchDetail

1x Rapberry sticker

Power supply for the Raspberry
Sturdy acrylic housing, which includes all possible connections for this Raspberry and perfectly protects
4 GB SD card to store your programs

https://learn.adafruit.com/adafruit-raspberry-pi-lesson-1-preparing-and-sd-card-for-your-raspberry-pi

USB Micro Card Reader
USB cable (for power supply or the power supply of a PC)
3 m Ethernet cable

TTL USB cable

https://learn.adafruit.com/adafruits-raspberry-pi-lesson-5-using-a-console-cable/test-and-configure

PI Cobbler (KIT hereby connect the RP with other circuit boards)
Large breadboard circuit
Colored board cable connector

5x 560 ohm resistors (for LEDS)
3x LED's (red, green, blue)

5x 10K resistors (for buttons)
3x pushbutton

https://learn.adafruit.com/playing-sounds-and-using-buttons-with-raspberry-pi/bread-board-setup-for-input-buttons

1x photocell

https://learn.adafruit.com/basic-resistor-sensor-reading-on-raspberry-pi/basic-photocell-reading

1x 1uf capacitor (for photocell)

GPU

SHA-256

Machine learning - the Deep Belief image recognition SDK

Arduino

Connect using I2C http://www.pihomeserver.fr/en/2013/08/13/raspberry-pi-home-server-arduino-lier-les-deux-via-bus-i2c/

JTAG

https://github.com/synthetos/PiOCD/wiki/Using-a-Raspberry-Pi-as-a-JTAG-Dongle

Arduino ProMini 3.3V 8MHz

Disable serial port console

edit /boot/cmdline.txt and remove all ttyAMA0 leaving:

pi@raspberrypi ~ $ cat /boot/cmdline.txt
dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait bcm2708.w1_gpio_pin=4

also, comment out ttyAMA0 in /etc/inittab

connect Arduino serial

RX->TX
TX->RX