1. Schmitt trigger.
2. Fastest finger first indicator.
3. Mobile BUG.
4. Automatic street light using PIR sensor.
5. Simple intercom circuit.
6. A development of ultra low cost wireless mouse.
7. Automatically controlled car deck audio mute switch.
8. IC 555 Timer tester.
9. Infrared cordless headphone transmitter and receiver.
10. Put coin and draw power.
11. Automated traffic lights model.
12. Multi utility flash light.
13. Mobile based switch control system.