Anti-Rape Alarm/Personal Alarm
I had to develop a quick design to cook up a simple anti-rape alarm/personal alarm, but using only a handful of inexpensive and readily available electronic components. I came up with this solution. I am […]
Analog Constant Current Generator
I’ve recently completed the basic design of a general-purpose analog constant current generator employing easily available electronics components. This is a simple circuit that is easy and cheap to build and is very useful especially […]
Universal PWM Driver – Arduino Project
There are different types of pulse width modulation (PWM) circuits out there online, but for the purposes of sharing a new post, I am showing you an Arduino Universal PWM Driver project at this time! […]
Micro LED Strobe for Radio & Remote Control Toys
Making a micro-LED strobe is much simple than you think. You can simply use a couple of common transistors to build your own LED strobes. I know, there’re countless ICs in front to help you […]
Simple Solder Fume Extractor
Recently I have been experimenting with a Chinese solder fume extractor and was interested in using a commonly available BLDC cooling fan to build a close replica of that pretty cute gizmo. Since I have […]
Audio-Light Modulator
An audio-light modulator is a funny device that controls the intensity of one or more electric lamps in response to the audio signal input. Such a device is ideal to give the rhythm to any […]
Inground Uplighter (AC230V LED Flasher)
Why use an inground uplighter (buried uplight)? The answer is simple – when lighting a static object with a buried uplight its visual impact can be stunning, whilst no one pays attention to that minuscule […]
Automatic Thermo Fan Switch
Thermo fans are an important part of thermal management for high-power electronics because when the temperature increases, performance can suffer, and beyond the point where performance degradation begins, excessive temperature causes catastrophic damage to delicate […]
Dancing Slime – DIY Kid’s Electronics
What is sound energy and how does it interact with a non-Newtonian fluid (https://en.wikipedia.org/wiki/Non-Newtonian_fluid)? This is just an attempt to get a variety of non-Newtonian materials “dancing” on a subwoofer using sound waves. Inspiration – […]
Arduino Automatic Wake & Halt Switch
Nowadays you can see many dc power supply modules equipped with an additional remote-controlled shutdown (or on/off) feature. It allows you to control the power supply output with a signal switch or transistor. Some time […]