Arduino Safe Without Any Servo or Motor Shield

In this instructable i will teach you how to make a very cheap arduino safe without any servo or motor shield and it also displays the password on LCD and it is wireless too.

Step 1: Materials Required :

Arduino uno (I used uno but another work just fine)

LCD Display 16X2

4X4 Matrix Keypad

I2C interface adapter

CD rotor(you can buy it from a computer repairing shp)

RC transmitter (you can find it from a broken rc car)

Jumper wires

Step 2: Wiring

FOR THE KEYPAD WIRING SEE THE ABOVE IMAGES.

FOR THE I2C ADAPTER WIRING SEE THE ABOVE IMAGE.

FOR THE TRANSMITTER AND RECIEVER WIRING:

Open the RC remote and connect the red wire with the DIGITAL PIN 13 of arduino and black wire to the GND

Then,Open the RC car you will find the reciever connect the + and - located on the reciever to the power source and then disconnect the wires connected to the back motor of the car and then connect it to the wires of the CD Rotor

Step 3: Scan the I2c Address

In order to enter the i2c address in the program you have to scan it from the code below if you already know it skip this step.

Step 4: The CODE

First of all you have to install the latest version of ARDUINO IDE software

Here's the link :

https://www.arduino.cc/en/Main/Donate

Then download all the libraries from the following links :

FOR KEYPAD : http://playground.arduino.cc/Code/Keypad#Download

FOR I2C : http://hmario.home.xs4all.nl/arduino/LiquidCrystal_I2C/LiquidCrystal_I2C.zip

FOR New liquid crystal or LCD : https://bitbucket.org/fmalpartida/new-liquidcrystal/downloads

FOR PASSWORD : http://playground.arduino.cc/Code/Password#Download

Finally the code :

Step 5: Testing

Here's my video of Arduino Safe

The password is "RV 7597494853" but you can change it anytime.

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If you have any ideas/suggestions please leave a comment