The board is aimed at tri/quad copters and features..
- - ATmega328 microcontroller
- 3.3V Voltage regulator
- Logic Level conversion for sensors
- Battery voltage sense input
- Alarm output
- 2x LED indicators
- Connections to RC Receiver
- Connections to Speed Controllers
- Programming Connector (Matching Sparkfun FTDI Basic board)
- Connections for additional I2C sensors
- Space for Sparkfun ATG3200/ADXL345 sensor board (other sensor boards may be used)
In short, it adds all the extra bits like logic level conversion, voltage regulation, LED's etc onto one complete Flight Controller Board.

You can purchase online on our website at http://www.hobbytronics.co.uk