Simple Neon Glow Bulb Tester
Neon glow bulb is a nostalgic decorate lamp everybody seems to love. A small version is used still mainly as neon indicator light, also called pilot light, in electric/electronic instruments and appliances as a neon […]
Analog Multiplexer/Demultiplexer Primer
Assume that you’re in the middle of a microcontroller-based project with a big array of sensors and transducers ready and waiting to get their I/O allocation by the microcontroller, and sadly you found yourself there’s […]
Build Your Own NFC Keyring
Near Field Communication (NFC) is a unique technology for creative marketing and mobile payments. Most of the recent smart phones support NFC so you can find that there is more fun and practical stuff you […]
Poor man’s Door Video Security Camera
This article describes a basic idea that can be used to build your own simple video security systems such as a door video security camera. In these times you can buy astonishingly cheap Car Rear-View […]
ACS712 – An Introduction
Often a need arise to add a current sensor in your project, when you’re making an electric energy meter or a master/slave control switch for instance. Picking out the right theme for monitoring current consumption […]
Reflect-A-Bird™ & An Elaboration
Recently I got nothing but an inspiration from a pretty nice commercial product “Reflect-a-Bird™ Bird Deterrent” (https://www.absolutebirdcontrol.com/reflect-a-bird-detrerrent). The device from Absolute Bird Control, Inc. is a silent wind-powered spinning visual bird deterrent that effectively scares […]
DTDC Switch for Outdoor/Street Lamp
Recently many readers demanded a simple automatic dusk-to-dawn controller (DTDC) electric switch circuit for real world outdoor/street lighting applications. I looked all the day and finally designed and built this little circuit based on easily […]
Learn to Use ublox NEO-6M GPS Modules
There exist many minuscule GPS-modules suitable for use in microcontroller projects. In this article I will explain how to use the far-famed ublox NEO-6M GPS module with your GPS projects. For a quick start, you […]
Digital Switch for Medical Examination Lamp
Light plays a major role in the medical field, being needed to provide faithful renderings of the observed facts. Nowadays, a broad range of examination lamps (also called as observation lamps) are available for almost […]
WeMos® D1 mini – An Introduction
Recently, I got another packet from Banggood as usual from China warehouse. Inside the packet, there’s a WeMos® D1 mini module – this time its version 2.2.0. I’m happy to note that it’s still alive […]