
Handy Board Expansion Board
The Expansion Board plugs on top of the Handy Board, and provides the following features:
- 10 additional analog sensor inputs;
- 4 inputs for active LEGO sensors (reflectance sensor and shaft encoder);
- 9 digital outputs;
- 6 servo motor control signals with power supply from the Handy Board’s internal battery;
- optional external power for servo motors;
- connector mount for Polaroid 6500 ultrasonic ranging system;
- general-purpose electrical prototyping area;
- pass-through connector for the Handy Board’s LCD screen.

do you have a part list for the Expansion Board