How to Make a Burglar Alarm Circuit for Your Home Security?
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These days home security systems are given great importance everywhere. However these security automation systems are very expensive to i...
Analog to Digital Converter Using PIC16f877A Microcontroller - Beginners Guide
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What is meant by Analog to Digital Converter (ADC)? An ADC converts analog signal to it's corresponding digital signal. How to conve...
LCD interface with Microcontroller PIC: Beginner’s guide
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How to interface LCD (Liquid Crystal Display) display module to PIC microcontroller? LCD is a passive component, that is it does not mak...
IR Transmitter and Receiver Circuit for Best Remote Control System
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A remote control system for appliances makes our life smarter and easier. The wireless remote control circuit may be based on IR waves ...
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12v Led Battery Level Indicator Circuit (Led Bar Graph)
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Most often, I come across many situations where I needed a lead acid battery voltage level monitoring circuit. Here is an example; I use l...
Simple Continuity Tester Circuit Using 555 Timer
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Normally we use continuity testing to check if a circuit, PCB or cable is continuous or not. It also helps us to check if a bulb is burnt...
Simple Door Phone Intercom Circuit Schematic (Duplex)
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A door phone intercom system provides a two-way conversation that is cost free. It can be very useful in hospitals, hotels and as a free o...
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