RedBot

/***********************************************************************
 * Exp4_MakingSounds -- RedBot Experiment 4
 *
 * Push the button (D12) to make some noise and start running!
 *
 * Hardware setup:
 * Plug the included RedBot Buzzer board into the Servo header labeled 9.
 *
 * This sketch was written by SparkFun Electronics,with lots of help from 
 * the Arduino community. This code is completely free for any use.
 * 
 * 23 Sept 2013 N. Seidle/M. Hord
 * 29 Oct 2014 B. Huang
 ***********************************************************************/

#include <RedBot.h>
RedBotMotors motors;

// Create a couple of constants for our pins.
const int buzzerPin = 9;
const int buttonPin = 12;

void setup()
{
  pinMode(buttonPin, INPUT_PULLUP); // configures the button as an INPUT
  // INPUT_PULLUP defaults it to HIGH.
  pinMode(buzzerPin, OUTPUT);  // configures the buzzerPin as an OUTPUT
}

void loop()
{ 
  if ( digitalRead(buttonPin) == LOW ) // if the button is pushed (LOW)
  { 
    tone(buzzerPin, 1000);   // Play a 1kHz tone on the pin number held in
    //  the variable "buzzerPin". 
    delay(125);   // Wait for 125ms. 
    noTone(buzzerPin);   // Stop playing the tone.

    tone(buzzerPin, 2000);  // Play a 2kHz tone on the buzzer pin

    motors.drive(255);     // Start the motors. The whiskers will stop them.
    delay(1000);   // delay for 1000 ms (1 second)

    noTone(buzzerPin);       // Stop playing the tone.
    motors.brake();          // brake() or stop the motors.
  }
  else  // otherwise, do this.
  { 
  }
}