Mobile detector
5 pen technology[1]
Solar air cooler
Alchol detection
Space mouse[1]
Alternating current voltages
Traffic signals based on microcontroller based
![5 pen technology[1]](https://static.fdocuments.in/doc/330x215/58cedbf31a28abd4098b64b9/5-pen-technology1.jpg)
![Space mouse[1]](https://static.fdocuments.in/doc/330x215/58ed32841a28abc1258b45e9/space-mouse1.jpg)
