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 […]
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 […]
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 […]
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 […]
Perhaps you will try tomorrow one microcontroller experiment that can store variable data in its EEPROM (electrically erasable programmable read only memory). Presented here is an idea to use inbuilt EEPROM of Arduino to save […]
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 […]
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, […]
Presented here is a shortcut to build your own bluetooth stereo audio adapter for listening ‘wire-free’ stereo music on the go! The one and only building block of this project is a Chinese bluetooth audio […]
This article shows how to use an Arduino microcontroller (Uno/Nano) and an organic light emitting diode (OLED) display for making a basic digital voltmeter (DVM). The given design configuration makes it useful for measuring DC […]
A few readers demanded to see one simple circuit of a rechargeable power white LED torch that can be charged through a regular electrical outlet. Alright, here’s the circuit diagram of a simple yet useful […]
