DFRobot DFR0100 Manual page 17

25/06/2015
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*/
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int buttonPin = 2; // button pin ‐‐ Digital 2
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int relayPin = 3; // relay pin ‐‐ Digital 3
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int relayState = HIGH;
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int buttonState;
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int lastButtonState = LOW;
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long lastDebounceTime = 0;
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long debounceDelay = 50;
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void setup() {
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pinMode(buttonPin, INPUT);
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pinMode(relayPin, OUTPUT);
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digitalWrite(relayPin, relayState);
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}
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void loop() {
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// read the state of the switch into a local variable:
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int reading = digitalRead(buttonPin);
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// check to see if you just pressed the button
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// (i.e. the input went from LOW to HIGH), and you've waited
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// long enough since the last press to ignore any noise:
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// If the switch changed, due to noise or pressing:
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if (reading != lastButtonState) {
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lastDebounceTime = millis();
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}
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if ((millis() ‐ lastDebounceTime) > debounceDelay) {
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// whatever the reading is at, it's been there for longer
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// than the debounce delay, so take it as the actual current state:
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// if the button state has changed:
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if (reading != buttonState) {
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buttonState = reading;
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// only toggle the Relay if the new button state is HIGH
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if (buttonState == HIGH) {
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relayState = !relayState;
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}
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}
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}
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// set the relay:
http://www.dfrobot.com/wiki/index.php/DFRduino_Beginner_Kit_For_Arduino_V3_SKU:DFR0100
DFRduino Beginner Kit For Arduino V3 SKU:DFR0100 ­ Robot Wiki
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