On COVID-19 lockdown days, I came across several motor driver modules in my scrap box in the attic – surprisingly most of them are unused Chinese modules. The L293 Arduino Motor Driver Shield, in particular, […]
Hi there! Last week I finally managed to get an Arduino delivering a 16-bit PWM (pulse width modulation) output from a nifty piece of code. Is the experiment finished? Of course not. Anyway, in this […]
This article covers a simple version of my portable solar power box. In use, it worked flawlessly for me. Although this is a simple version, I am sure someone will be able to improve on […]
Building track lights and spotlights seems to be an obsession of mine. I built my first one in my school days or so, and this time my project thought is on simple power LED light […]
Presented here is the basic circuit of an over-current detector built around a handful of easily available and inexpensive electronics components. This simple circuit for DC devices wakes up when the connected output load draws […]
Sewing is a complex art that requires a lot of skill, precision, and patience. So, it’s critical to be able to see what’s doing, and a well-lit needle zone is very essential. Some high-end sewing […]
Using light is a common way to trap fish in fishery industry. Attracting fish by using artificial light source is to induce them to form a large shoal at night taking advantage of fish’s photo […]
In this post, I will take a quick look at making traffic light projects. The model project will involve using only a little bit of affordable hardware that’s great for beginners and school students. Even […]
Picking out a laser diode and its driver for your next design can easily turn into a multi-week project. Not only is it difficult to find the right laser diode in the highly fragmented market, […]
Interest has been growing in design ideas for controlling the speed of heatsink cooling fans in electronic equipments. This article will describe how to simply design and build a governable heatsink/chip cooling fan for your […]
