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 […]
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 […]
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 […]
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 […]
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 […]
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 […]
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 […]
How to build a cheap and cheerful musical doorbell using a few electronics parts laying around? I recently planned to try one idea, and this week I had the time for that. Now, I would […]
A cheerful idea to fragrance your room without burning is to use an electric/electronic fragrance dispenser. So simply build the automatic fragrance dispenser presented here and place scented crystal rocks/fragranced crystals in the chest and […]
The common mains power resumption alarm will activate an internal buzzer in the event of a mains power resumption after a power cut or power interruption. Such a portable alarm can be used in and […]
