Laser Diodes & Drivers – An Improved Primer
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, […]
PWM Heatsink/Chip Cooling Fan
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 […]
Bicycle Electronic Horn Hack
I’m afraid, someone might wonder whether this was the right thing to do with a cheap bicycle electronic horn made in China! It’s quite natural all right, but let me take this space to explain […]
Portable UV Scorpion Detector (v1)
Having a moderate presence of scorpions in my locality, I recently bought a cheap ultraviolet (UV) flashlight in the hope of swaying them to move elsewhere. It’s because, a while ago I noticed that when […]
Build Light Indicator – Arduino Inside!
I recently got my hands on a string of COB LED modules with lens for a big project – smart driveway marker. I’m still tweaking things but I’m planning to share the project soon enough. […]
9V Rechargeable Battery – Right & Wrong
The 6F22 9V battery is very popular rectangular battery quite often found in the drawer of an electronics hobbyist! Its most common names include 9V battery, 9-Volt battery, E battery, PP3 battery, 6F22 battery, MN1604 […]
Making an Acrylic Display with Arduino
While I was browsing the listing of art and craft materials on Amazon, I chanced upon acrylic sheets but I didn’t consider much of it. In fact, given a great discount offer to buy a […]
How to Modify a Fake/Dummy CCTV Camera
I got an assortment of fake/dummy security cameras a while ago. The cheapo batch was made in China, and later marked with a brand, perhaps by the importer or distributor in India. Anyway, they are […]
Magic Cup Light Module – Quick Tries
What is a Magic Cup Light Module you may be asking yourself? Well it’s an inexpensive Chinese module comprises a small mercury tilt switch and a light emitting diode. In this article, I’m going to […]
Radar Light Bulbs & Random Views
When it comes to ways to reduce energy consumption there are many changes that you can make to your own home that have additional benefits for you. Note that reducing electricity consumption is just one […]