AVT5137 A

We present a simple, microprocessor controller for low power stepper motors. Full control possibilities are obtained through a serial interface, but the system is also equipped with a simple keyboard connector that allows entering commands without using a computer. It is then possible to start and stop the engine, change direction and speed. The popular ATmega8 microcontroller controls the whole. The control software was written in C using the GCC compiler.

The device is especially recommended for people involved in controlling and using low-power stepper motors

Selected parameters:

• control of 2 and 4 phase motors
• work in half-full and full-time mode
• the ability to stop the motor after reaching a certain position or receiving a signal from the limit switch
• measurement of voltage and current supplying the motor
• the possibility of using NC / NOi type end switches
• communication with a computer - RS232 connector (9600, n, 8 + 1, MODBUS RTU protocol)
• system status indication - LED diodes
• connector of an additional control keyboard
• power supply - 8-35Vdc
• tile dimensions 105x149mm
• printed circuit board and documentation included
  Detailed description in EP 06/08