Reference+
Class Name
SoftwareServo
Description
Opens an RC servo motor connected to a GPIO pin
This library uses timers to control RC servo motors by means of pulse width
modulation (PWM). While not as accurate as dedicated PWM hardware, it has
shown to be sufficient for many applications.
Connect the signal wire (typically colored yellow) to any available GPIO pin
and control the servo's angle as shown in the example sketch.
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); }
Constructors
SoftwareServo(parent)
Parameters
parent
(PApplet)
typically use "this"
Methods
attach()
Attaches a servo motor to a GPIO pinattach()
Attaches a servo motor to a GPIO pin
You must call this function before calling write(). Note that the servo motor will only be instructed to move after the first time write() is called.
The optional parameters minPulse and maxPulse control the minimum and maximum pulse width durations. The default values, identical to those of Arduino's Servo class, should be compatible with most servo motors.write()
Moves a servo motor to a given orientationattached()
Returns whether a servo motor is attached to a pindetach()
Detatches a servo motor from a GPIO pin
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