Do you have a piggy bank at home?
There are sensors on the piggy bank to prevent theft.
Step 1: Materials. Piggy Bank
- 3V coin Battery
- Piggy bank
Step 2: Electrical Circuits . Pressing the Switch Turns Off.
1. Connect the 3V battery (+) and buzzer(+).
2. Connect the 3V battery (-) and Micro-swirches.
3. Connect the buzzer(-) and Micro-swirches.
4. Pressing the M-switch turns OFF.
Step 3: Complete. Use a Glue Gun to Attach.
Use a glue gun to attach.