Lenz Grimmer's photostream  

I recently purchased this little device to be able to reprogram Atmel AVR microcontrollers like they are used on the ESCs of my quadrocopter. There is an excellent description on the OpenPilot Wiki that explains how to replace the firmware with something more suitable for multirotor flying models.

Another view of the new controller board and base plate.

The allinone IMU board is mounted underneath the Seeeduino Mega controller, by using double-sided adhesive foam tape, to minimize vibrations. The hole required to pass through the ESC cables also provides the necessary air ventilation for the pressure sensor to work correctly (without being affected by the propeller turbulences).

The Seeeduino Mega is mounted to the new plate using Nylon Screws and spacers. This leaves enough room to mount the IMU board underneath it, in the center of the copter. The small PCB on the right provides the ESC connectors and power supply.

Yes, this is a plastic food storage container from IKEA - it's cheap, lightweight and robust. There will be some holes in the base-plate, so it's not airtight (which would be detrimental for using the pressure sensor on the new IMU board).