L293D

This is a very useful chip. It can actually control two motors independently. We are just using half the chip in this lesson, most of the pins on the right hand side of the chip are for controlling a second motor, but with the Raspberry Pi, we only have one PWM output.

The L293D has two +V pins (8 and 16). The pin '+Vmotor (8) provides the power for the motors, and +V (16) for the chip's logic. We have connected pin 16 to the 5V pin of the Pi and pin 8 to a battery pack.  

This guide was first published on Jan 14, 2013. It was last updated on Jan 14, 2013. This page (L293D) was last updated on Aug 17, 2019.