Today we’ll see a few ways of interfacing servo motors to the ESP32 microcontroller and controlling them with code, with a potentiometer, and over WiFi.
We have already looked at both the ESP32 microcontroller and at using analog servo motors , and today we’ll put both of them together. We’ll see how to interface and control servo motors with the ESP32 and we’ll take advantage of the microcontrollers’ WiFi capabilities to control a servo with a web-based interface.
As you’ll soon see, controlling a servo motor with the ESP32 is quite similar to using an Arduino, with the added advantage of the ESP32’s wealth of ports and capabilities.
Controlling an analog servo motor, which is the type of servo motors most commonly used by hobbyists, is a task that most microcontrollers have no problem performing. Arduino’s, for example, have no problem controlling servos and the Arduino IDE even comes with a built-in servo motor library and a few bits of sample code to get you started.
So why use an ESP32, especially as most Arduino’s are less expensive? Depending upon your application there may be no reason, or there may be several. Here are a few: