The following are links to code, tutorials and discussion on DIY Drones about autopilots for different embedded processors, onboard computers and operating systems. Leave a comment if you have a project that should be added here.

Ardunio Platform

• ArduPilot, a very low-cost navigation-only autopilot
• BlimpDuino, an Arduino-based autonomous blimp
• Quadrino, an Arduino-powered quadcopter (discussion thread here)
• ArduCopter, a helicopter autopilot project
• MikroQuad, an arduino-based quadcopter project
• Wash UAV, an Arduino-based autopilot for the Blade CX2 helicopter

LEGO Mindstorms NXT

• LEGO UAV, including autopilot code. Version 2, with a full 5 DoF IMU.
• Another NXT UAV, using a full IMU with gyros and accelerometers and GPS

Parallax BASIC Stamp chip:

• Overview of Basic Stamp UAV
• A step-by-step autopilot tutorial series can be found here
• Autopilot discussion

Parallax Propeller chip:

• AttoPilot, a powerful and inexpensive commercial autopilot
• OughtToPilot: A prize-winning Propeller-based fixed wing autopilot with full source code and documentation.
• OctoPilot: Propeller processor-based autopilot..
• Spyder, a Propeller-based quadcopter.
• Paul Hubner's PNav project: another Propeller-based autopilot
• Autopilot discussion
• IMU code
• Autopilot code

PIC processor

• UAV development board version 1 by Bill Premerlani
• UAV development board version 2 by Bill Premerlani

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  The ARM7 (using the Philips LCP214x chip) is the core of the open source Paparazzi project:
  
  • Paparazzi project home page
  • Our Paparazzi "getting started" tutorial
  • Our interview with one of the project leaders
  • NG UAVP, a ARM7-based quadcopter project, based on the LPC2148 version of the chip.
  • SparkFun tutorial on getting started with the LCP214x chip
  
  

  

  ARM7 on SparkFun development board:
  
  • Autopilot plus IMU shield.
  
  

  

  GumStix (Intel+Linux):
  
  • Full IMU-based autopilot and glass cockpit software code
  • Heli Autopilot code
  
  
  

  

  Ground-based controller:
  
  • Quadcopter with sensors onboard but autopilot running on a ground-based laptop
  
  Windows Mobile cellphone platform:
  
  • Autopilot code
  
  Symbian cellphone platform:
  
  • Aerial imaging software for the N95 series