The APM Copte 2.6 Flight Controller is a complete open source autopilot system. It allows the user to turn any fixed, rotary wing or multirotor vehicle (even cars and boats) into a fully autonomous vehicle capable of performing programmed GPS missions with waypoints. 

Kit Includes:

• ArduCopter 2.6 Flight Controller (3DR or RC Timer depending on stock, they are identical)
• New 3DR External GPS/Compass Module
• Radio Data Telemetry kit
• 3DR APM Case Side Entry
• 3DR Power Module
• Also comes with external buzzer for audio tones 
• Pre-Soldered with side entry pins ready to go