Do anyone want a special doorbell? not just make buzzing sound but this one plays small music tune as well! The Simple Musical Doorbell Circuit using the UM66 IC is very easy to build and requires only a few components,. However, the main part of this circuit is a special chip called the UM66T, which […]
Mini Projects
Simple 220V AC Light Dimmer Circuit
This post teaches how to make Simple 220V AC Light Dimmer Circuit for home lights; also with this dimmer we can make light more or less bright by turning OFF current slowly. Note: Working with high voltage is not safe; good electrician should fix this in house and only do if big person is watching. […]
Simple Electronic Fishing Lure Circuit
This article for Simple Electronic Fishing Lure Circuit shows how to make electric fishing lure; which uses small buzzer to make sound when fish come. Also, this circuit is easy to make and works very well; but however, fishing rules vary from place to place, so before using an electric lure, check whether your country […]
Simple Lie Detector Circuit using Transistors
Have fun making this Simple Lie Detector Circuit using Transistors. Real lie detectors are very hard and complicated so this one is not perfect; but it is fun way to see how body react when its in stress. Also, this circuit works by detecting changes in sweat to check whether someone may be telling the […]
Simple RF Sensor without Battery Circuit
This article for Simple RF Sensor without Battery Circuit show how to make small tester with no battery, also it help to check if radio transmitter is working or not. Moreover, the tester receives power from radio waves sent by the transmitter and if the transmitter works properly, the LED light blinks to indicate it. […]
Simple Universal Signal Generator Circuit
If we want to make sound generator circuit for cheap? then this post for Simple Universal Signal Generator Circuit show easy way to build using transistors. These type of circuits are also good for: Also, we can make this circuit at a very low cost. What is a Universal Signal Generator Circuit: Universal Signal Generator […]