Here is a quick write up on how to use the tymkrs “Turn Me” rotary encoder. This supports the “push down” feature of the tymkrs kit.
Fritzing Rotary Encoder Part: Rotary Encoder with Knob bth.fzpz
Fritzing Project: RotaryEncoderDemo.fzz
Arduino (1.5) project: RotaryEncoderDemo.ino
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/* Read Quadrature Encoder * Connect Encoder to Pins encoder0PinA, encoder0PinB, and +5V. * Sketch by max wolf / www.meso.net * v. 0.1 - very basic functions - mw 20061220 * Sketch updated by Brooke Hedrick / www.millamilla.com * v. 0.2 - Added the "S" pin for encoders with push-down support - bth 09292013 * - Put a limit of 255 and 0 in place. It rolls over automatically at the limits - bth 09292013 * */int val;int encoder0PinA = 3;int encoder0PinB = 4;int encoder0PinS = 5;int encoder0PosUp = 0;int encoder0PosDown = 0;int encoder0PinALast = LOW;int n = LOW;int encoder0UpDown = LOW;void setup() { pinMode(encoder0PinA,INPUT); pinMode(encoder0PinB,INPUT); pinMode(encoder0PinS,INPUT); Serial.begin (9600);}void loop() { encoder0UpDown = digitalRead(encoder0PinS); n = digitalRead(encoder0PinA); if ((encoder0PinALast == LOW) && (n == HIGH)) { //Serial.print("up down:"); //Serial.println(encoder0UpDown); if (digitalRead(encoder0PinB) == LOW) { if (encoder0UpDown == LOW) { encoder0PosUp--; if (encoder0PosUp < 0) { encoder0PosUp = 255; } } else { encoder0PosDown--; if (encoder0PosDown < 0) { encoder0PosDown = 255; } } } else { if (encoder0UpDown == LOW) {
if (encoder0PosUp > 255) { encoder0PosUp = 0; } } else { encoder0PosDown++; if (encoder0PosDown > 255) { encoder0PosDown = 0; } } } Serial.print(encoder0PosUp); Serial.print(" "); Serial.println(encoder0PosDown); } encoder0PinALast = n;} |
For more detail: Using the tymkrs “Turn Me” with an Arduino
