A timely review is beneficial to all. So, here’s the long-awaited sequel of my old post about...
Author - T.K. Hareendran
Optical Needle Deflection Sensor
Sometimes you may want to detect the deflection of the needle of an instrument by a non-contact...
LED Throwies & Build Ideas
Here’s a project for fun – Magnetic LED Throwies! LED Throwies were invented in 2006 by the...
Raspberry Pi Pico ADC & Quick Experiments
A few months ago, I read about some strange issues with Raspberry Pi Pico’s ADC. According to...
Arduino Digital Start/Stop Power Switch Box
Lately, I started thinking about a digital start/stop power switch box. Sure, I could buy one...
Simple Steam Sensor Build & AHS01IB Absolute Humidity Sensor
Some time ago I was asked by a voracious reader to design a simple steam sensor switch for him. The...
Pro Mini Pull-Pin Alarm
Here you can find the project details of a simple and low-cost pull-pin security alarm. While...
Mod Your Goodknight Gold Flash
I’m sure there’re a lot of electronic gadgets in your house that can be recycled. The...
Arduino Traffic Lights (v2) – Crosswalk Button
I finally got around to testing this concept – adding a crosswalk button to the previously...
Arduino Analog Sensor – Read & Display
Arduino provides a number of analog inputs which enables us to measure parameters such as voltage...