Using these instructions:
http://shop.ninjablocks.com/blogs/how-to/7506204-adding-433-to-your-raspberry-pi
Interesting comment:
I follow this guide and use RPi_utils to receive and send RF code to my RF devices, but it didn’t work.
Then adding this line to the codesend.cpp did the trick:
mySwitch.setPulseLength(207);
For Arduino:
http://www.buildcircuit.com/how-to-use-rf-module-with-arduino/
Works great but is very limited is distance.. I attach a 17cm cable antenna, use condensator to filter noise, but still over 2m is difficult to reach.. dont really know why, but its probably related to power and especially proper antenna. fun to see the signal going through anyway and being able to send numbers from RPi with “sendcode” and receive them with the arduino.