This guide details how to build a simple sawtooth wave generator using the venerable 555 timer chip...
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.
Peephole Proximity Sensor
Peephole proximity sensor presented here is an inexpensive nearness detector for hobby electronics...
Fish Bite Alarm v1
A fish bite indicator is a mechanical bell or electronic alarm that indicates to an angler that...
Mighty LED Flashgun v1
This article is a mere pointer on how to build a mighty light-emitting diode flashgun controller...
Door/Window Knock Sensor – Simple DIY Project Ideas
Recently I came across a dirt-cheap knock sensor module labeled as Keyes KY-031 Knock/ Impact/Hit...
Poor man’s Driveway Alarm
With a driveway alarm, you can be sure your property is protected from intruders. The primary...
How to Build a Cheap Panic Alarm/Button?
The key purpose of a panic alarm (also called duress alarms, hold-up alarms, or panic buttons) is...
BJT & Diode Temperature Sensors – A Quick Walk
When it comes to everyday temperature sensing, the thermistor is the most simple and inexpensive...
Locker Security Switch
Want an inexpensive locker security switch? Look no further – build this little but versatile...
Poor man’s RC Battle Switch/RC Relay
This is quite a fun little project that can easily help you to build a battle switch for your radio...