PCBX

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 […]

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 […]

Arduino Analog Sensor Reader

Hello everyone, today we’ll learn how to rig up a simple system to read and display the value of an analog sensor using Arduino and a seven-segment LED display (SSD) panel. The presented setup will […]

DFR Turbidity Sensor Review & Thoughts

Turbidity sensors are widely used to measure the amount of suspended particles (turbidity) of the wash water in washing machines and dishwashers. In principle, turbidity sensor consists of an optical diode and optical transistor and […]

Jog LED Marker Light

If you’re looking for the circuit of a running / jogging light up wristband, here’s a tried and tested design without a microcontroller. Even though the design presented here is based on traditional (leaded) components, […]