Matt Otto, Zach Robbins, Monty Wonnacott

YouTube Video

Heres a brief video of the lockbox in action, it will show if the codes right the green light will turn on and open, if its wrong it will shut or stay shut and then turn the red light on

our lock box on the outside locked up and ready to go

this is the servo in the box that when the code is inputted it will turn and unlock

When the code is put in wrong then the red light will turn on.

When the code is inputted correctly then the green light will turn on and the box will open up.

This is our board and setup

Diagram of the aurduino setup


#include <Password.h> //http://www.arduino.cc/playground/uploads/Code/Password.zip //tells to use password library
#include <Keypad.h> //http://www.arduino.cc/playground/uploads/Code/Keypad.zip  //tells to use keypad library
#include <Servo.h> //tells to use servo library

Servo myservo; //declares servo
Password password = Password( "1379" ); //password to unlock box, can be changed

const byte ROWS = 4; // Four rows
const byte COLS = 3; // columns
// Define the Keymap
char keys[ROWS][COLS] = {
// Connect keypad ROW0, ROW1, ROW2 and ROW3 to these Arduino pins.
byte rowPins[ROWS] = { 5, 4, 3, 2 };// Connect keypad COL0, COL1 and COL2 to these Arduino pins.
byte colPins[COLS] = { 8, 7, 6 };

// Create the Keypad
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

void setup(){
 pinMode(11, OUTPUT);  //green light
  pinMode(12, OUTPUT);  //red light
myservo.attach(9); //servo on digital pin 9 //servo
keypad.addEventListener(keypadEvent); //add an event listener for this keypad

void loop(){

//take care of some special events
void keypadEvent(KeypadEvent eKey){
switch (keypad.getState()){
  Serial.print("Pressed: ");
  switch (eKey){
   case '*': checkPassword(); break;
   case '#': password.reset(); break;
   default: password.append(eKey);

void checkPassword(){
if (password.evaluate()){  //if password is right open box
    //Add code to run if it works
    myservo.write(0); //160deg
        digitalWrite(11, HIGH);//turn on
    delay(500); //wait 5 seconds
    digitalWrite(11, LOW);// turn off
    Serial.println("Wrong"); //if passwords wrong keep box locked
    //add code to run if it did not work
    digitalWrite(12, HIGH); //turn on
    delay(500); //wait 5 seconds
    digitalWrite(12, LOW);//turn off

Problems we encountered during the project is trying to use a servo. We have never used a servo motor before and could not code but after some tutorials and videos we figured it out very quickly and were able to get the box working. If we had the time or the money we would have used a better more sturdy box and had a secret way to open the box without the code. We had alot of fun with this project and if we had more time then we would have been able to do so much more with the project. Zach Robbins did well with wiring along with Matt Otto. Matt Otto and Zach worked hard with this site also taking great pictures and descriptions for the site. Monty did a great job with the coding of this box and project. It took a lot of hard work and teamwork to get this box running and looking good but in the end it came out well and we are all proud of what we accomplished.