By T.K. Hareendran

International Electronic Design Freelancer • Technical Author • Hardware βeta Tester • Product Reviewer
Articles Written 466

Arduino Portable Ultrasonic Distance Meter

After a little bit of research, I discovered that building a portable ultrasonic distance meter using Arduino was indeed a very simple task. I was surprised to discover that integrating a tiny OLED display into […]

Arduino Light up Coaster Ideas (v1)

Now is the time to make something that lights up! As promised in one of my previous posts, I’m sharing some crude design ideas for making your own coaster that wakes up as it listens […]

Raspberry Pi Pico – PWM Primer

Sometimes ago I wrote an introduction to Raspberry Pi Pico. Today I will show how to exploit its pulse width modulation features. However, if you want to do some serious projects starting from this blog […]

Raspberry Pi Pico – Quick Start

Raspberry Pi Pico is a microcontroller board from the Raspberry Pi foundation. It is an exciting new microcontroller board launched on January 21, 2021, based on the RP2040 micro-controller by the Raspberry Pi Foundation sporting […]

Arduino & Square Wave Thoughts

The theory behind generating square wave is almost a trivial thing! A square wave is a signal that changes between high and low state where the primary requirement is that the on-time (high state) and […]

Reverse Voltage Defender – Design Ideas!

This article shows you how to use reverse voltage protection with minimal power loss in your electronics projects running on a battery/DC power supply. In fact, for a long time, I wanted to put together […]

Power MOSFET Load Switch

A while ago, I designed a Power MOSFET Load Switch circuit using a handful of components that I use in little power electronics projects to allow a regular slide switch to control power on/off function.  […]