By T.K. Hareendran

International Electronic Design Freelancer • Technical Author • Hardware βeta Tester • Product Reviewer
Articles Written 451

Easy LED Origami!

Love the ancient art of paper folding – Origami?. Traditional origami consists of folding a single sheet of origami paper (square paper often with a colored side) into a sculpture without cutting, gluing, taping, or […]

Automatic Hand Sanitizer

This article describes how you can build an easy to make automatic, touch-free, hand sanitizer dispenser at home. My design idea introduced here transforms a couple of readily available and ridiculously cheap discrete electronics parts […]

Tiny USB Windows® Key

In this post, you can see a tiny, yet quite useful, microcontroller-based USB key/Foot Pedal for Windows™ computers as a little do-it-yourself project. It is particularly geared as single function key, but other usages are […]

Bicycle Headlamp & Taillight

This article comes with the construction points of a do it yourself bicycle headlamp (white) and taillight (red or amber). The bicycle headlamp-tail light set presented here provides brilliant illumination for all bicycles, and can […]

A Funny Digital Toggle Switch

This time I’d like to share my funny thoughts on the build of a very ‘hobbyist’ digital toggle switch device. The project idea keeps things as simple as they can be. You have a sensor […]