How to Make Arduino Piggy Bank

Hello readers in this instructable i will show you how to make arduino piggy bank

How it Works?

when u bring coin near the piggy bank the coin slot opens for sometime in that time duration the coin can be inserted which will be closed automatically ,this is an awesome science project idea for school students

Step 1: Video Tutorial

Hate reading?

watch this simple video tutorial

https://youtu.be/wedW3inIizQ

Step 2: Materials

• Mini Breadboard
• Ultrasonic Sensor
• Arduino mini
• Jumper Wires
• Cardboard Box
• Micro Servo

Step 3: Circuit Diagram and Arduino Code

For free circuit diagram and code for this project click here

Step 4: Programming

• Connect usb to laptop
• upload the code check previous step for code

Step 5: Finishing Up

• Test the working of micro servo
• connect everything to the box
• attach the battery(i have placed outside so it can be easily replaced)
• Micro servo is attached with piece of cardboard which is used to open and close coin slot is hot glued to cardboard
• Bring your hands near sensor and start saving money

https://youtu.be/wedW3inIizQ Watch this awesome working of project