ServoESP32

Generate RC servo signal on a selected pins with ESP32 device and Arduino framework, fixed support for latest ESP32 core i made this repo "fork" for personal use, and i will not guarantee any support or updates

Base on RoboticsBrno ServoESP32 Library.

Interface

The interface is similar to Arduino/Servo: https://www.arduino.cc/en/Reference/Servo

But the function attach() is different:

bool attach(
    int pin,
    int channel = CHANNEL_NOT_ATTACHED,
    int minAngle = DEFAULT_MIN_ANGLE,
    int maxAngle = DEFAULT_MAX_ANGLE,
    int minPulseWidthUs = DEFAULT_MIN_PULSE_WIDTH_US,
    int maxPulseWidthUs = DEFAULT_MAX_PULSE_WIDTH_US,
    int frequency = DEFAULT_FREQUENCY
);

More information in source code documentation.

Example: 04-SimpleServoAngles

There are also a ServoFloat and ServoDouble variant available. Use one of these when working in radians.

Example: : 05-SimpleServoRadians

IMPORTANT INFO

According testings, the frequency for ESP32 S2/S3/C3 has to be set at least to 200 Hz. Here is an example, how to set just frequency:

Servo servo1;
const int servoPin = 4;
const int frequency = 200; // Hz

servo1.attach(
    servoPin, 
    Servo::CHANNEL_NOT_ATTACHED, 
    Servo::DEFAULT_MIN_ANGLE, 
    Servo::DEFAULT_MAX_ANGLE, 
    Servo::DEFAULT_MIN_PULSE_WIDTH_US, 
    Servo::DEFAULT_MAX_PULSE_WIDTH_US, 
    frequency
);

For more information look at the PR25

PlatformIO

You can use this library with PlatformIO. Just add this line to your platformio.ini:

lib_deps =
    ;
    https://github.com/alunit3/ServoESP32.git

Arduino IDE

You can download the code as a ZIP file and then use the "Add .ZIP Library" feature in the Arduino IDE. or You can find the library in the Library Manager in the Arduino IDE, named ServoESP32Fix.