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 […]
BJT & Diode Temperature Sensors – A Quick Walk
When it comes to everyday temperature sensing, the thermistor is the most simple and inexpensive component to get temperature data at ease. That’s fine, but in this article, I’ll explain how to use common bipolar […]
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 […]
Residential Electronic Pest Deterrent
There’re many residential electronic pest deterrent circuits on the web, and with some research, you will be able to build one yourself for your pest situation. The most practical and cheerful residential pest deterrent solution […]
Audio Induction Loop Receiver (Quirky Ideas)
Little version of the audio induction loop receiver presented here can serve a variety of purposes. It is extremely useful for receiving audio from an audio induction loop transmitter or any other source that generates […]
Arduino pulseIn() Primer
A while ago someone asked me via email how to read a pulse input on an Arduino I/O pin. So, I decided to write a short note about that. Let me know in the comment […]
Arduino Larson Scanner
This is the simple way to play with a Larson Scanner. Just buy a Larson Scanner kit like the one shown above and start up the system. This quite popular open-source hardware 9-LED Larson Scanner […]
Solar LED Book Light
You never know what kind of funny gizmos you’ll find online, especially when you’ve a bunch of notifications configured to go off when such wonders pop up. I even find myself searching for something despite […]