Presented here is an automatic motion sensor switch built around a cheap ‘Doppler Microwave Radar...
Electronic Circuits
In this section you will learn and build simple electronic circuits projects. You will make interesting analog electronic circuits useful in daily life. Moreover, you will know electronic circuit design using circuit elements.
The circuits include home made electronic circuits, hobbyist circuits and prototypes.
3V3 uC Power Supply
Nowadays most electronics hobbyists require a precision 3.3V power supply module for their...
Poorman’s Laser Diode Driver
Recently I got a couple of powerful laser diodes from a friend abroad. The ‘invisible’ (infrared)...
Universal Relay Module
Here is the circuit of a do it yourself universal relay module for microcontroller projects. One...
Li-ion Universal Battery Charger Teardown
Outcome of a product teardown can be used by hobbyists/makers to find out what components are being...
Portable LED Tester
The circuit below shows a simple light emitting diode tester, powered from a 9V compact...
Efficient Snake Repeller
Solar electronic snake repellent presented here is a proven solution to keep all poisonous snakes...
Automatic Fan Switch with PIR Motion Sensor
Here is one interesting circuit of an automatic, passive infrared motion sensor controlled, speed...
Simple DVM Voltage Reference
Validating the calibration of an electronic test and measurement instrument such as a digital...
USB Xmas Candle
Here is a fascinating USB-powered LED Candle armed by the Digispark USB Development Board based on...