/* Blink Turns an LED on for one second, then off for one second, repeatedly. Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to the correct LED pin independent of which board is used. If you want to know what pin the on-board LED is connected to on your Arduino model, check the Technical Specs of your board at: https://www.arduino.cc/en/Main/Products modified 8 May 2014 by Scott Fitzgerald modified 2 Sep 2016 by Arturo Guadalupi modified 8 Sep 2016 by Colby Newman This example code is in the public domain. http://www.arduino.cc/en/Tutorial/Blink */ int speakerPin=4; int solPin=3; int buttonPin = 1; // the number of the pushbutton pin int ledPin = 0; // the number of the LED pin int buttonState = 0; // variable for reading the pushbutton status int counter= 0; // timer when button is pushed int chainLock= 0 ; // 0 = open chainLock 1 = closed chainLock // the setup function runs once when you press reset or power the board void setup() { // initialize digital pin LED_BUILTIN as an output. pinMode(speakerPin, OUTPUT); pinMode(solPin, OUTPUT); pinMode(buttonPin, INPUT_PULLUP); pinMode(ledPin, OUTPUT); digitalWrite(solPin, HIGH); } void beep (int number) { for(int i=0;i