An arduino library for comunicate with a rc receiver This library can read and decode PPM signals from simple RC receivers. On Arduino Uno there are 2 channels supported, on others like leonardo or mega, 4 channels.
For some explanation and examples see my web site:
http://wkla.no-ip.biz/ArduinoWiki/doku.php?id=arduino:modellbau:projekte:rcreciver