Implementing RF Modules Tutorial

I finally wrote a tutorial on using those pesky RF link modules. When I first started out using the RF modules there were only two tutorials available and they weren't so clear. After a month of struggling with the RF , I managed to get it to work. I had some spare time on my hands so I wrote up a giant tutorial on using the RF modules - its filled with code, schematics, and helpful tips.
Link : http://narobo.com/articles/rfmodules.html

The Roboduino is finally on sale!!!

Its $40 for a kit and $55 for an assembled version

More info and sales information here:

http://curiousinventor.com/kits/roboduino

Features / Specs:
* 100% Compatible with Arduino software.
* Power buses along side pwm and analog pins easily accept standard servo and sensor connectors.
* Powered can be supplied from USB, barrel plug or 3-pin male header. You'll need a suitable power supply when driving multiple servos.
* dedicated UART 3-pin male header
* 6 PWM outputs with neighboring unregulated power pins
* 6 analog pins
* 14 digital pins
* Reverse polarity protection for board circuitry (not for unregulated power pins)
* Optional I2C pull-up resistor locations