1)ATMEGA168 microcontroler

2) 2 H-Bridges

3) 3  MOSFET drivers

4) 1 Temperature sensor circuit

3 x MOSFET drivers for controlling up to 14A 12V, perfect for heaters, fans, solenoids
2 x H-Bridges capable of up to 2A each. Control 2 motors, or control one stepper motor.
A temperature sensor circuit for reading the standard 100K thermistor.
RS485 connection for noise-free communications with the motherboard.
IDC header for connecting a Magnetic Rotary Encoder.
Polarized ICSP header for simple, easy programming.
It mounts directly to the Pinch Wheel Extruder.
It is plug and play with the RepRap Motherboard.