This video teaches you how to build a simple clap switch circuit on a breadboard using an NE555 timer.Continue reading
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.
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.Continue reading
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.
Learn to build a dark sensor circuit using NE555. It is similar to other dark sensor projects. The project is good for school students.Continue reading