![]() The speed controller PWM for a DC motor works by varying the average voltage supplied to the motor But in practice, for changing the speed of a dc motor we cannot go on changing the supply voltage all the time. The DC motor speed in general is directly proportional to the supply voltage, so if reduce the voltage from 9 volts to 4.5 volts then our speed become half of what it originally had. This is designed to provide bidirectional drive currents at voltages from 5 V to 36 V. This Motor Driver is designed and developed based on L293D IC. The Motor Driver is a module for motors that allows you to control the working speed and direction of two motors simultaneously. This tutorial of Robo India explains how to control speed of DC motor with PWM Signals using L293D IC Motor Driver.
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