This project is designed to allow you to create a reusable module for Bi-Polar Stepper applications based on a L293D H-Bridge. An H-bridge is a circuit that allows you to reverse the polarity of a DC circuit. They’re used to control the direction of motors.
Stepper Motor Module – [Link]
The project is “Motorized Curtain” with Remote control. It is made up of MCU ATMEGA328 with Arduino BootLoader, motor driver L293D ( i used L293B with external diodes, because i couldn’t find L293D ), IR Receiver TSOP 1738, DC Motor from an old printer and other small parts.
Motorized Curtain with Remote control - [Link]