Hi,I will tell you how to make an electric eraser. It helps you to eraser any pencil writing without moving your Hands. Here is the Working video of the electric eraser
Step 1: Materials
1. 1.5v DC motor
2. 2 wires
3. mobile charger and it's recieving pin OR you can use a battery and it's holder
4. Sticky Tape
6. An eraser
7. A Safety pin (big)
8. A handle or a tube
Fix 2 wires to the terminals of the DC motor. Attach the DC motor at one end of the handle/tube and pass the wires through the tube and take out the ends of the wires from the other end of the tube/handle.
Peel off the ends of the wires and attach it to the charger's receiving pin.Or if you are using battery then battery holder
Step 4: Finishing
Make a hole in the eraser and fix it to the axle of the motor.And the electric eraser is ready.