Membuat Alarm otomatis pendeteksi air menggunakan arduino

program yang digunakan : 

YOU WILL NEED:

  8-ohm speaker

  100-Ohm Resistor

  2 jumper wires / 2 alligator clips

CIRCUIT:

  100 Ohm resistor connected Arduino Pin 8

  Other side of resistor connected to the positive terminal of the speaker

  Negative termial of the speaker connected to Ground

 created 21 Jan 2010

 modified 31 May 2012

 by Tom Igoe, with suggestion from Michael Flynn  

 heavily modified Jul 2014 by

 Michael James

 http://www.programmingelectronics.com/

 http://arduino.cc/en/Tutorial/Tone2

This code is in the public domain

*/

void setup() {

  pinMode(8, OUTPUT); //The Speaker is attached at this pin

}//close setup

void loop() {

  //Tone takes three arguments tone(pin, frequency, duration) 

  tone(8, 2000, 1000);

  //The loop does not wait for the tone to finish, so lets delay to here 2 seconds to hear

  //one second of noise and one second of silence - essentially a beep

  delay(2000);

}//Close Loop

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