Introduction: Quiz Safe

When your test scores are poor, you don't want it to be shared with your parents. You can use it to put your test paper in a box. If parents find that they need their book, parents will find it. The password will open it.

inspiration from: (Key Safe)

I add the led light from this project




Arduino Leonardo (Uno)


Server motor

LCD panel 16x2

LED light (green, red)

Extension cord

Male to female jumper

mobile power


Utility knife

Step 1: Step 1 : Code

There is a CODE:

Download 4 system from the library

set your password

if you input the correct password the lock will open and green Led light will bright

if you input an incorrect password the lock will not open and red Led light will not bright

press * to delete your Input password press # input your password

Step 2: Step 2 : Circuit

Insert all wires into the correct position

Be careful Positive and negative, if you put incorrect your things will gut burn

Connection positive electrode to 5V

Connection negative electrode to GND

Step 3: Step 3 : the Box

Find the one box that you don't need it

Use your Utility knife to make shape what you want

And drawing on the box makes your box more pretty

Step 4: Step 4 : Assemble the Components

Use the type to place the item on the finishing box

Step 5: Step 5 : How to Use

Put things and turn the motor to lock
If you want to open, please press the correct password.

If you press the incorrect answer, the red LED will light up