smart switch circuit

Smart Switch for Model Aircraft Lights

T.K. Hareendran - 11/02/15

The Smart Switch for Model Aircraft Lights is a simple yet efficient ambient light sensing electronic switch designed [...]
laser system

Little Laser Trip Wire Circuit

T.K. Hareendran - 10/24/15

Little Laser Trip Wire circuit presented here can detect movement of people or objects while passing through the [...]
AC Light Dimmer Module Circuit

AC Light Dimmer Module with ZC Detector

T.K. Hareendran - 09/16/15

From time to time I get requests to make some high power switching, so I decided to design [...]
rgb led circuit

Layman’s RGB LED Module Circuit

T.K. Hareendran - 09/06/15

Layman’s RGB LED module is an ultra-simple project realized without any microcontrollers. An RGB LED can be driven [...]
USB-chargeable supercapacitor light circuit schematic

USB-chargeable Emergency Inspection Light

T.K. Hareendran - 08/06/15

Described is one USB-chargeable Emergency Inspection Light for in-lab use, wired around a hi-efficiency 5mm-white LED. The power-bank [...]
Pocket LED Microscope

Enhance Your Pocket LED Microscope

T.K. Hareendran - 08/05/15

This eBay item, sold under different names, is a very useful accessory for electronics hobbyists. The gizmo is [...]
night light schematic circuit diagram

Night-light for Kids Room Circuit

T.K. Hareendran - 07/03/15

Illuminate your kid's room and help banish nighttime jitters with this simple yet efficient night-lighting solution. Presented here [...]
motion light circuit

Motion-Sensing Security Light

T.K. Hareendran - 05/31/15

Fascinating electronics hobby circuit, Tricky Security Light, presented here is nothing but a motion sensing security light built [...]
LED Display Brightness Controller Circuit

LED Display Brightness Controller Circuit

T.K. Hareendran - 05/23/15

Even if you are designing a microcontroller-based LED display system, often it may calls for a manual option [...]
TCS3200 Color Sensor Module

Get Better With TCS3200 Color Sensor Module

T.K. Hareendran - 05/10/15

"The purest and most thoughtful minds are those which love color the most” - John Ruskin, The Stones [...]
Bulb Failure Warning circuit

Auto 12V Bulb Failure Warning!

T.K. Hareendran - 05/04/15

Electronic circuits and projects are becoming more and more complex, which makes it increasingly difficult for a novice/student [...]
Optical Liquid Sensor Circuit

Optical Liquid Sensor Circuit

T.K. Hareendran - 05/01/15

Here is one simple design idea of a self-contained optical liquid sensor, realized using generally available electronic components. [...]
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