A Junk box 555 PWM Generator
Often you’ll need a simple pulse width modulation generator circuit to test or run small dc lamps and motors in your electronics projects. There’re ways of creating cheap and practical circuits at home, and today […]
Simple Flame Supervisor
Simple flame supervisor is nothing but a little flame status monitor. The theme of this play is to build a cheap device to provide an alert when the flame under supervision runs out unexpectedly. Admittedly […]
SS49E Hall-Effect Sensor & A Random Hack
Very recently I wanted a couple of Hall-Effect Switches again for some random experiments, hence placed an order for a bunch of A3144 Hall-Effect Switch ICs. The online retailer quickly delivered the packet at my […]
Little 1 Key DC Touch Dimmer
If you’re an active electronics hobbyist or maker, sometimes you may get a request from your close friend or neighbor to build a very economical table lamp or bedroom lamp for him/her but with some […]
Universal Tilt Sensor
Tilt sensors come in umpteen flavors. The cheapest and most common flavor is the belittled SW-520D tilt sensor module you can find everywhere. Key component in the demoed module is one SW-520D ‘roll ball switch’ […]
An Isolated 1 Key Touch Pad Project
With this article, I’m trying to share one simple idea on how to build a single-key touch pad sensor/switch using a quick and cheap Chinese module. We can easily build a simple touch sensor using […]
Little Hydrophone
This article is about building a little hydrophone that can be used to record underwater sounds. Professional hydrophones used in science world are relatively costly, and even do it yourself ideas feature expensive components. As […]
Build Your Quick & Dirty Foam Cutter
Let’s make a quick and dirty foam cutter! Foam is an easy and cheap material for various prototype creations, and cutting the common polystyrene/Styrofoam is easy with a hot wire cutter. Now do it yourself […]
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 […]