3-Wire PC Fan Tips & Tricks
A fan failure in today’s advanced electronic projects may result in other delicate and expensive components failing, causing costly repairs and delays. A 3-wire PC fan is an easy and inexpensive way to prevent such […]
The NJK-5002C Hall-Effect Sensor Proximity Switch
Having spent a few days messing on with building simple inductive proximity sensor circuits, I’m putting together anew inductive proximity detector device for a small-scale industry. I already have an expandable idea with the sensor […]
Arduino Inside Automatic Staircase Light
Here’s an automatic minder to keep your stairway alighted while you’re near to it. One presence sensor wired to a microcontroller scans its environs and automatically activates a light source when it sees an object. […]
Charge-Pump Primer
If you build battery/usb powered electronics projects, often you’ll be in need of a high-voltage power supply. That is a power supply that has an output voltage higher than that catered by the battery. One […]
Capacitor Guide – Summary
Capacitor is an electronic component that stores and controls electrical energy and is an essential element used in printed circuit boards (PCB’s). Choosing a capacitor depends on the circuit and applications. There are some parameters […]
Poor man’s Wired or Wireless Spy Camera (v1) – Part 1
In this article, I’ll dig into everything you need to know when it comes to the build of your own minuscule wired/wireless spy camera system. Since the spy camera itself is one of the most […]
CMOS Toggle Switch with CD4049
Here’s a simple and clever way to build a toggle switch with a quite popular, highly available, and cheap CMOS logic chip CD4049UB. Since the little electronic toggle switch presented here is an easy to […]
An Easy 555 EC Sensor!
Aware that a particular circuit is needed to measure electrical conductivity (EC) of a liquid. Since the conduction of current through a water solution is mainly dependent on the concentration of dissolved ionic substances such […]
How to Play with a Salvaged Bipolar Stepper Motor?
Not long ago, we published an article related to this topic. This time the prime aim of this revised article is to serve as inspiration for electronics hobbyists who are making projects which involve driving […]
Midnight Security Alarm & Light Controller
What should you do when you hear a midnight door knock? Although there’s no quick answer to this question, you must keep in mind that you and your locked door may be the only obstruction […]