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This L293 based motor driver features an optically isolated interface to provide electromagnetic interference protection.
The L293 dual h-bridge motor driver can drive two 4.5-36V motors at 600mA of continuous current with 1.2A peak output per channel. This motor driver uses photocouplers to optically isolate your delicate microcontroller from the motor driver circuitry. It supports both 3.3V and 5V logic level microcontrollers.
Screw terminals are provided for connection to two motors and a motor power source. Digital inputs are available via male header pins.
Pin | Description |
---|---|
IN1 | L293 Input 1 - Motor B control 1 |
IN2 | L293 Input 2 - Motor B control 2 |
IN3 | L293 Input 3 - Motor A control 1 |
IN4 | L293 Input 4 - Motor A control 2 |
EN1 | EN1 - L293 Enable 1 - Motor B enable |
EN2 | EN2 - L293 Enable 2 - Motor A enable |
VCC | Logic level voltage in (3.3-5V) |
GND | Common ground |
EN1/2 | IN1/3 | IN2/4 | Description |
---|---|---|---|
H | L | H | Forward |
H | H | L | Backward |
H | L | L | Stop |
H | H | H | Stop |
L | X | X | Stop |
Normally you would control the direction of the motor using IN1/3 & IN2/4 and the speed by varying a PWM signal on the EN1/2 lines.