Continuous Rotation Micro Servo
https://github.com/madhephaestus/ESP32Servo
Using the ESP32 Servo Library to test the servo movement off the ESP 32 as the Arduino Servo library does not work with the ESP32.
Considerations: Continuous servo FS80R runs on an optimal Voltage of 4.8V-6V. Although the servo does run on the microcontrollers 3.3V at slower speeds/ RPM can damage controller board of the servo. Look into other options such as the Tower Pro that runs on 3V-6V.