Digital Dice Circuit is small electronic like thing. It work like real dice and shows number from 1 to 6. It uses lights and buttons which is no need to throw. This circuit is good for games and fun. Circuit Working: Parts List: Component Type Value Quantity Resistors (All resistors are 1/4 watt) 1k 2 […]
Low Battery Indicator with Buzzer Circuit
This for Low Battery Indicator with Buzzer Circuit is very simple and uses basic idea and few parts. Buzzer make sound when battery is low and warn us. It help us to know when to change the battery so device do not stop suddenly. Circuit Working: Parts List: Component Type Value Quantity Resistors (All resistors […]
Clap Switch Circuit using IC 4017
Clap Switch Circuit using IC 4017 turns on ON or OFF with a clap sound. It uses speaker as microphone. Speaker and microphone are built same way so speaker can work like microphone in this circuit. Circuit Working: Parts List: Component Type Value Quantity Resistors (All resistors are 1/4 watt) 3.3k 1 470k 1 470Ω […]
Simple Mains Phase Detector Circuit using CMOS ICs
This article talks about two easy and Simple Mains Phase Detector Circuit using CMOS ICs like IC 4001 and IC 4060. They find if mains AC 220V or 120V is present in air. No need to touch the mains. Circuit uses antenna to feel mains power in air. Circuit Working (using IC 4001): IC 4001 […]
Intercom Circuit
Intercom Circuit is like smart walkie talkie for home use. No need of button it work hands-free with electronics. We talk in mic and it changes voice to electric signal. Amplifier make signal strong. One part stop our own speaker sound, so there is no echo or noise. Same signal goes to other unit and […]
Simple IC 555 Oscillator Circuits
Simple IC 555 Oscillator Circuits is a 555 timer chip which common and easy to use. It is good for many projects. But for some circuits we must know how it works when not active. Two main pins: IC 555 Pinouts Here is a list that shows what each pin on the chip does. IC […]