Profile: WZmicro is a provider of electronics components, stepper motor, microstepping controller, motor driver ICs, and RF wireless transmitter/receivers. MD-1 is a stand alone single uni-polar stepper motor driver board which utilizes the Allegro UCN5804 chip. There is one input to turn on/off the motor, and a small trim pot controls the speed. MD-2 board uses Intel 80C31 as a main controller. The board comes with a schematic and sample programmed EPROM and source code. The firmware allows to control the stepper motor's start, stop, and running direction simultaneously. This board is perfect for students, or any one who wants to learn about the stepping motor and the popular 8051 programming. MD-5 board offers a short cut to get familiar with microstepping. It is a complete system to drive the bipolar stepper motor in micro-stepping mode, as well as the half step and full step modes. It is built around the Ericsson PBM3960 micro-stepping controller and TEA3718 motor drivers.