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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.
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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.
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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.
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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...
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Noise Detector for Isolated Room
The circuit was designed to provide an indication of an environment or room noise that exceeds a fixed threshold through the use of a flashing LED.
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Sequencer Circuit Using Lamps or LEDs
The circuit was made in a modular design to provide a sequential illumination of LEDs or lamps as it forms a ring structure which make the circuit limitless to the number of modules desired.
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Sine Wave Generator with 1KHz Frequency
This simple circuit has been designed to generate sine waves with a frequency of 1 KHz while featuring low distortion and low output impedance until 1 V RMS as it obtains power from batteries.
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Courtesy Light with Time Delay Switch Aspect
The circuit was constructed to provide a time delay feature when switching OFF a light to give the person enough time to reach the bed before the lamp completely turns OFF.
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Battery Powered Night Lamp by 555 Timer
The objective of the circuit is to be able to provide a night lamp with an ultra low current consumption from a battery source in case of the absence of wall mains socket.
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Two Rhythmic LED as Flashing Eyes for Halloween
The circuit was designed to be used as flashing eyes in Halloween gadgets with the addition of rhythmic music or speech while being powered by 3 V battery.
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