Arduino: Controlling Multiple Servos with ESP32

ESP32 supports many development platforms such ESP-IDF, MicroPython and Arduino.We had already seen how to interface servo with esp32 using ESP-IDF and MicroPython. In this post we will see how to control multiple servos using ESP32 on arduino platform.

WHAT YOU NEED

• Arduino IDE with ESP32 framework installed
• ESP32 Servo library for arduino
• ESP32 Dev board (any board the exposes the GPIOs should work)
• Two servo motors and jumper wires

If you haven’t installed servo library, checkout this post which will guide you through installation process.

Connecting servos to ESP32

I am using IO12 (servo1) and IO22 (servo2) but most of the other IOs should also work. I am using 9g servo, power supply from dev board should be enough for this. For large servos, you might want to use a dedicated power supply.

Servo 1

• orange – IO12
• red – +5v
• brown – GND

Servo 2

• orange – IO22
• red – +5v
• brown – GND

Sweeping multiple servos

Following code will sweep all connected servos from 0 to 180 and back 0. We need to provide number of connected servos and IO pin for each servo. Code will loop through each servo and sets the angle appropriately.