L293D Motor Driver

The L293D is a monolithic integrated, high voltage, high current, 4-channel driver.” Basically this means using this chip you can use DC motors and power supplies of up to 36 Volts, thats some pretty big motors and the chip can supply a maximum current of 600mA per channel, the L293D chip is also what’s known as a type of H-Bridge. The H-Bridge is typically an electrical circuit that enables a voltage to be applied across a load in either direction to an output, e.g. motor.
L293D_Circuit

Wiring

To wire your L293D H-Bridge to your Arduino, connect the following pins:

  • L293 Pin 1 –> Arduino +5V
  • L293 Pin 2 –> Arduino Pin 6
  • L293 Pin 3 –> Left Motor Pin 1
  • L293 Pin 4 –> Arduino Ground
  • L293 Pin 5 –> Arduino Ground
  • L293 Pin 6 –> Left Motor Pin 2
  • L293 Pin 7 –> Arduino Pin 5
  • L293 Pin 8 –> Battery +5V
  • L293 Pin 9 –> Battery +5V
  • L293 Pin 10 –> Arduino Pin 4
  • L293 Pin 11 –> Right Motor Pin 2
  • L293 Pin 12 –> Arduino Ground
  • L293 Pin 13 –> Arduino Ground
  • L293 Pin 14 –> Right Motor Pin 1
  • L293 Pin 15 –> Arduino Pin 3
  • L293 Pin 16 –> Arduino +5V

Recommended Software

  • none

Instructions and Code

Posted in Arduino Tutorials Tagged with: , , ,
One comment on “L293D Motor Driver
  1. medo says:

    nice i like this tutorial

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