mbed 3D printer PCB

This PCB connects an mbed microcontroller board [1] to a Sparkfun Quadstepper Motor Driver Board [2].
I use it for my RepRap Prusa Mendel 3D printer but you can use it for any CNC machine.

The firmware [3] for the mbed board is based on the Tonokip firmware and is compatible to ReplicatorG using the fived driver.

There are jumpers for a 100k thermistor, a hot-end (via 3.3V mosfet) and a thumb-joystick.

Update: new version (mbedquadstepperminimalNOatmega8u2.brd) has 2 mosfets and 2 th