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.

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.

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.

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.

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.

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.