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288 articles written by T.K. Hareendran

Author: T.K. Hareendran

About: Internationally Certified Freelance Technical Author/Circuit Designer Electronics Engineering Technologist Founder & Promoter of TechNode» PROTOLABZ – An Open Source Hardware R&D Lab Tel: +91 (0) 9447712139 Email: designlab.technode@gmail.com

Website: http://technodeprotolabz.blogspot.in/

Having Fun Building a Remote RC Firecracker and Firework Igniter

T.K. Hareendran - 10/16/2017

A recent discussion with my friendly editor, Adam Carlson, rekindled my idea of designing an unusually simple, yet [...]

ESP32 — Getting Started the Easy Way!

T.K. Hareendran - 10/03/2017

  Open-hardware platforms enable rapid prototyping and faster time-to-market of new IoT applications. The objective of this post [...]

Open-Source Light Meter

T.K. Hareendran - 09/20/2017

Light meters, these days, are no longer a mystery: From home-improvement stores to eBay and Amazon you can [...]

Build Your Own Smart Bike Battery Gauge

T.K. Hareendran - 09/14/2017

So you’d kind of like to know when the battery in your bike is getting a bit flat, [...]

DIY Bosch BMP280 Pressure Sensor Project Primer

T.K. Hareendran - 09/06/2017

Nowadays, numerous electronic sensor modules are available on the market that can be combined with inexpensive microcontroller boards [...]

The Arduino FM Radio Build

T.K. Hareendran - 08/29/2017

What do you pick when you want to make something with a nostalgic touch? A radio, of course! [...]

How to Get Started with a Microwave Radar Motion Sensor

T.K. Hareendran - 08/16/2017

Last year, I took a look at some mostly low-cost passive infrared (PIR) motion sensor modules. Then recently, [...]

Creating an Interleaved PWM Generator With an Arduino

T.K. Hareendran - 08/08/2017

Pulse-width modulation (PWM) is the ground for control in power electronics. The vast majority of semiconductor power devices [...]
rf remote switch inside

RF Remote Switch Teardown

T.K. Hareendran - 06/03/2017

Recently, I picked up a cheap, two-channel RF remote control switch from eBay, and once I completed a [...]
SGL8022W circuit

SGL8022W Touch LED PWM Module – What’s Inside?

T.K. Hareendran - 05/29/2017

Some time ago, while browsing eBay for a simple LED controller to rejuvenate my retro bedroom lamp, I [...]