I'm looking at my Motor Shield Rev 3 and wonder how it works. It would seem it uses a PWM pin for speed control on DC motors, and a direction pin which simply reverses the action of the PWM pin when it toggles. The point being, the speed and direction of the motor changes, while the function (PWM vs…

That sounds about right although to be strictly correct the direction pin does not reverse the action of the PWM pin The PWM input to the shield causes the power to the motor to be turned on and off very quickly. The ratio of on to off of that signal is what controls the speed of the motor. The d…

How do Motor Shields work?

Official Hardware UNO Family UNO WiFi Rev2

UKHeliBob Split this topic December 13, 2023, 6:18pm 4

2 posts were split to a new topic: Arduino Car Kit

Topic		Replies	Views
Which pins are actually needed for 'Motor Shield Rev3' General Guidance	10	1151	December 13, 2024
Arduino motor shield Rev 3 - Newbie General Guidance	6	684	January 9, 2023
Using Arduino Micro with Motor shield -> motor direction problem Motors, Mechanics, Power and CNC	9	1250	August 2, 2021
please help in understanding shields Programming	3	1371	May 5, 2021
Arduino Motor Shield Rev3 General Guidance	11	601	July 25, 2025

How do Motor Shields work?

Related topics