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Open-Source Light Meter

T. K. brings us a brilliant open-source light meter with OLED display. This Arduino project may not illuminate the way, but can tell you how bright it is!

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! [...]

Changing of the Guard

Adam Carlson - 08/22/2017

I want to take a moment to introduce myself, but before I do, I need to thank Marian [...]

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, I became more aware of cheap microwave radar motion sensor modules. The popular version of the pre-wired [...]

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 [...]
Prusa I3A Plus

Prusa I3A Plus Review and Assembly Tips

Enrico Miglino - 06/06/2017

In the past, I tested several 3D printers models in the range for personal use, i.e.the classic desktop [...]
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 [...]
2 - schematic

Elegant Bathroom Mirror Lights with Motion Detector

T.K. Hareendran - 05/19/2017

The inspiration for this project came from the artwork shown here, prepared by my neighbor who is a carpenter. The project was nothing more than a bathroom washbasin mirror with a bunch of lamps around [...]
littlewire schematic

Learn To Play With Little Wire

T.K. Hareendran - 05/18/2017

Since its inception, I’ve been a big fan of Digispark — the minuscule development board from Digistump (http://digistump.com). [...]
showerhead light 2

Automatic Showerhead Light

T.K. Hareendran - 04/20/2017

I am a big fan of the LV version of the Pololu mini pushbutton power switch (2808) that [...]
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