- Processing
- p5.js
- Processing.py
- Processing for Android
- Processing for Pi

- Processing Foundation

This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Core Javadoc and Libraries Javadoc.

Class | SoftwareServo
Name | ### attached()
Examples |
    import processing.io.*;
    SoftwareServo servo;

    void setup() {
      servo = new SoftwareServo(this);
      servo.attach(4);

      // On the Raspberry Pi, GPIO 4 is pin 7 on the pin header,
      // located on the fourth row, above one of the ground pins
    }

    void draw() {
      // we don't go right to the edge to prevent
      // making the servo unhappy
      float angle = 90 + sin(frameCount / 100.0)*85;
      servo.write(angle);
    }

    void keyPressed() {
      // press a key to release or re-attach the motor
      if (servo.attached()) {
        servo.detach();
      } else {
        servo.attach(4);
      }
    }
Description | Returns whether a servo motor is attached to a pin
Syntax |
    .attached()
Returns | boolean

Updated on January 1, 2021 03:38:10am EST
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