Self-Lock Delay Switch Module DIY
Self-lock delay switch is a simple timer module that produces a fixed square pulse. It is designed around the 555 timer and uses a tricky negative edge trigger to ‘run and lock’ the timer. The […]
Build Your Own Bicolor LED Waistband
Inspired by a dazzling Chinese design, I started thinking about making my own bicolor LED waistband with a few components lying around my workbench. In this post, you can see the basic design concept of […]
Tricolor LED Signal Baton
An LED signal baton (also called marshalling torch) is a proven gadget to head traffic. Primarily it is widely used by traffic police, attendants etc. to channelize traffic but it is a great handy aid […]
Multipurpose Power-Thrifty LED Flasher
Sometimes you may need to make a battery-operated lamp flasher suitable for a variety of applications. In this post you will see the design concept of a 555 timer based multipurpose LED flasher that requires […]
Universal Pulse Extender Module
On certain occasions it is necessary to use a sensor module that generates a relatively short pulse to indicate a change of status. If the duration of its output signal is too short, the associated […]
Raspberry Pi Pico W Quick Starter
Raspberry Pi Pico W is another Raspberry Pi Pico but features Wi-Fi letting you to connect the device to a Wi-Fi network. In this quick starter post, you will learn how to start with a […]
True RMS & RMS – A Quick Refresher
This little post is a quick rescript of RMS and TRMS. As you know, this is not a popular or frequently discussed topic. So, let us jump in! RMS and TRMS RMS stands for Root […]
Automatic Aroma Diffuser (v2)
Last week the prime goal was to revise my design thoughts on automatic aroma diffuser and make a bit amended version for a distant client, again using a bunch of readily available inexpensive components. I […]
Universal RADAR Motion Detector
There are a lot of different parts in the electronics world, and often parts with the same functionality come indifferent forms and sizes. Now it is the time to pick another cheapo microwave motion sensor […]
NCV Tester Secrets
A non-contact voltage tester (NCV Tester) makes electrical work easier and safer – and for a few bucks you can own it from your nearest home improvement center. The NCV tester is a simplest and […]