Add four 1A DC motor drivers to your Mark III sensor board.
Kit includes 2 Texas Instruments SN754410NE dual H-bridge
chips, 4 green LEDs and 4 red LEDs to indicate motor direction,
4 1KOhm pull-up resistors, 1 74HC04 hex inverter, and 4 3-pin
motor headers (Handyboard pinout).
Requires Sensor Board Kit
The circuit for these components is laid out on the
optional Sensor board. To use the H-Bridge Kit
with the Mark III, you must first purchase the Sensor Board
Kit. You may still buy this H-Bridge Kit separately,
but you will be responsible for interfacing it with your
robot.