Safety Light for Bicycle Rear Portion

The objective of the circuit is to produce a visible light that is clear enough to be seen with the use of 13 flashing LEDs while being power by 3 V battery source, which makes it suitable also for joggers and walkers.

Digital Counter with an Interval of Kilometers

The circuit has been designed for a person who loves to jog or walk while measuring the distance that have been covered during the activity.

Replicator Circuit of Cricket Chirping Sound

The purpose of the circuit is to imitate the chirping of the cricket for use as gadgets for amusement and props while being powered by 5V to 12V batteries.

Breathe Out Operated Electronic Candle

The amusing circuit of electronic candle was designed to react by blowing or giving a puff to a microphone, causing the bulb or LED to turn OFF like a normal candle.

Equipment Indicator Using Two LED

This simple circuit aims to provide an indication of an appliance if it is ON or OFF with the use of green and red LEDs.

Battery Powered Timing Device for Joggers

The circuit provides a means of repetitively alerting an individual jogger for a fixed amount of time that employs beeping as the indicator.