Sawtooth Wave & 555 Timer
This guide details how to build a simple sawtooth wave generator using the venerable 555 timer chip that can be used to test some of your homemade circuits and projects. Got any questions? I’m happy […]
Peephole Proximity Sensor
Peephole proximity sensor presented here is an inexpensive nearness detector for hobby electronics projects and home automation applications, where we need to sense the presence of a person (or object) in front of an entry […]
Fish Bite Alarm v1
A fish bite indicator is a mechanical bell or electronic alarm that indicates to an angler that something is happening at the hook end of the fishing line. There are many types of fish bite […]
Mighty LED Flashgun v1
This article is a mere pointer on how to build a mighty light-emitting diode flashgun controller. The presented project idea is intentionally kept do it yourself-friendly by using easily available components. Before we step into […]
Micro Mouse Wiggler – DIY
Finding your computer asleep when you come back from your tea break might be annoying but what’s even more frustrating is when doing long software installs where screen lock and/or sleep mode may be enforced […]
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 Sensor. The other day I bought a couple of those modules from an online store. It’s pretty small and easy […]
Poor man’s Driveway Alarm
With a driveway alarm, you can be sure your property is protected from intruders. The primary reason to get a timely driveway alert is to detect when a vehicle or person enters or leaves your […]
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 to allow a person under threat to quickly call for help in the event of an emergency. There’re […]
Locker Security Switch
Want an inexpensive locker security switch? Look no further – build this little but versatile project. All components for this project should be readily available at any reasonable electronics components supplier, and the construction of […]
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-controlled (RC) model aircraft. The reality is the basic design can be used and/or adapted to […]