DC Gear Motor Primer
This article explains how to play with the common geared dc motors widely used to drive small robots and simple actuators. Geared dc motor is in fact an ordinary dc motor but with plastic or […]
Arduino Sound Analyzer Primer
In this article I’ll show you how to capture sound signals on the Arduino and start some interesting experiments on it. Look for and gather a sound sensor module For the experiment initially you need […]
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 […]
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 […]
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 […]
Backpack NeoPixel LED Safety Light
Let me start with the photo of a cheap Backpack LED safety light from China. It’s undoubtedly a beautiful and pretty useful safety gizmo for walkers and wheelers. The battery operated red LED ring used […]
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 […]