TinkerKit PushButton
Overview
The Pushbutton Module is possibly the simplest sensor available. It detects when a person or an object
presses on its circular cap.
Output: This module outputs 5v when the button is pressed and 0v when released. Pressing the button
closes the circuit. When connected to an input on the Arduino usin g the TinkerKit Shield, you can expect a
value of 1023 while th e button is pressed and 0 when released.
Module Description: This module features a 12mm pushbutton , the standard TinkerKit 3pin connector,
a green LED that signals that the module is correctly powered and a yellow LED th at is lit only when the
button is pressed.
This module is a SENSOR. The connector is an OUTPUT which must be connected to one of the INPUT
connectors on the TinkerKit Shield.
Code Example
/*
Button
Turns on and off a T010111 LED Module connected to O0 (digital
pin 11), when pressing a T000180 pushbutton attached to I0 (analog pin 0).
created 2005
by DojoDave <http://www.0j0.org>
modified 17 Jun 2009
by Tom Igoe
modified 7 dec 2010
by Davide Gomba
This example code is in the public domain.
based on http://www.arduino.cc/en/Tutorial/Button
*/
#define O0 11
#define O1 10
#define O2 9
#define O3 6
#define O4 5
#define O5 3
#define I0 A0
#define I1 A1
#define I2 A2
#define I3 A3
#define I4 A4
#define I5 A5
// constants won't change. They're used here to
// set pin numbers:
const int buttonPin = I0; // the number of the pushbutton pin
const int ledPin = O0; // the number of the LED pin
// variables will change:
int buttonState = 0; // variable for reading the pushbutton status
void setup() {
// initialize the LED pin as an output:
pinMode(ledPin, OUTPUT);
// initialize the pushbutton pin as an input:
pinMode(buttonPin, INPUT);
}
void loop(){
// read the state of the pushbutton value:
buttonState = digitalRead(buttonPin);
// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH:
if (buttonState == HIGH) {
// turn LED on:
digitalWrite(ledPin, HIGH);
}
else {
// turn LED off:
digitalWrite(ledPin, LOW);
}
}
