Project on tap sensor

Breadboard (generic)

tap module

Jumper wires (generic)

Arduino Uno Rev3

LED (generic)

Arduino IDE

<pre ><code >const int buttonPin = 3; // the pin that the pushbutton is attached to const int led1 = 12; const int led2 = 11; const int led3 = 10; const int led4 = 9; // the pin that the LED is attached to // Variables will change: int PushCounter = 0; int buttonState = 0; // current state of the button int lastButtonState = 0; // previous state of the button void setup() { // initialize the button pin as a input: pinMode(buttonPin, INPUT); // initialize the LED as an output: pinMode(led1, OUTPUT); pinMode(led2,OUTPUT); pinMode(led3,OUTPUT); pinMode(led4,OUTPUT); // initialize serial communication: Serial.begin(9600); } void loop() { buttonState = digitalRead(buttonPin); // compare the buttonState to its previous state if (buttonState != lastButtonState) { // if the state has changed, increment the counter if (buttonState == HIGH) { // if the current state is HIGH then the button // wend from off to on: buttonCounter++; Serial.println("on"); Serial.print("number of button pushes: "); Serial.println(buttonCounter); } else { // if the current state is LOW then the button // wend from on to off: Serial.println("off"); } } // save the current state as the last state, //for next time through the loop lastButtonState = buttonState; // turns on the LED every four button pushes by // checking the modulo of the button push counter. // the modulo function gives you the remainder of // the division of two numbers: if (buttonCounter % 2 == 0) { digitalWrite(led1, HIGH); digitalWrite(led2, HIGH); digitalWrite(led3, HIGH); digitalWrite(led4, HIGH); } else { digitalWrite(led1, LOW); digitalWrite(led2, LOW); digitalWrite(led3, LOW); digitalWrite(led4, LOW); } } </code></pre>

Project on tap sensor

Magical code