L293D H-Bridge


Your esieabot (from 2020 to 2022) is equipped with an L293D H-bridge enabling it to control these 2 dc motors in all directions.


The L293D is an H-bridge that can control 2 motors at the same time.


Depending on which inputs are activated, the motors will turn in one direction or the other.


Cyril BUTTAY, CC BY-SA 3.0 <http://creativecommons.org/licenses/by-sa/3.0/>, via Wikimedia Commons


For each motor, connect the following inputs and outputs:

  • enable input: enables or disables a motor

  • Input 1 (or 3): to operate the motor in one direction

  • Input 2 (or 4): to operate the motor in the other direction

  • Output 1 (or 3): one of the motor terminals

  • Output 2 (or 4): the other motor terminal


Note that there is no defined direction through the H-bridge. The + and - motor terminals and the forward/reverse direction are purely arbitrary.

Technical data

The complete data sheet is available here: https://pdf1.alldatasheet.fr/datasheet-pdf/view/22432/STMICROELECTRONICS/L293D.html