How to use infrared music transmitter and receiver
DIY Kits ◥
This is a simple infrared based music transmitter and receiver kit. There are two kits, one kit is the infrared music transmitter and the other is the infrared receiver with a basic LM386 based audio amplifier. You keep the transmitter and the receiver in a …
Continue ReadingHow to use digital clock DIY kit
DIY Kits ◥
In this video, I have described how the digital clock DIY kit works. This is a simple DIY digital clock kit for beginners. It is based on AT89C2051-24PU. It has basic functions like hour and minute display, minute and second display and 2 alarms set …
Continue ReadingHow to make an inductor for FM transmitter project
This video shows the basic process of making an inductor. Simply take an enamelled wire, scrap off the paint and wind it over a cylindrical object. Most of the hobbyist FM transmitter projects use inductors and those are made using the process described on this …
Continue ReadingHow to build a dark sensor using transistor and photoresistor
It is yet another dark sensor circuit using a BC547 NPN transistor and a photoresistor. When the light falling on the photoresistor is blocked, the circuit turns on the LED. Its output is exactly opposite to the output of a light sensor. It is one …
Continue ReadingHow to build a touch switch using NE555
This touch is based on monostable mode of NE555 timer chip. Simply follow the schematic shown on the video and touching the wire connected to pin 2 of NE555 will turn on the LED connected to pin 3 of NE555. The LED stays on for …
Continue ReadingHow to build a light sensor using an LDR and a transistor
This is a simple light/dark sensor circuit built on a breadboard. This project is suitable for electronics beginners. The LED connected to the transistor stays on until the light falling on the photoresistor is blocked. You can find similar projects at buildcircuit.com also.
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