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Search Results for: laser

Laser Beam Light Activated Remote Control Circuit

Last Updated on July 3, 2019 by Swagatam 13 Comments

laser beam remote control circuit

The following post illustrates a simple light toggled/operated remote control circuit, which can be activated by an ordinary flashlight or more effectively through  a laser beam unit (key chain type). […]

Filed Under: Laser Projects, Remote Control, Security and Alarm

How Contactless Infrared Thermometers Work – How to Make One

Last Updated on May 19, 2020 by Swagatam 4 Comments

In this post we will learn the basic working concept of thermal scanners or contactless IR thermometers, and also learn how to make a practical DIY prototype of the unit […]



Filed Under: Health Related, Infrared (IR), PIR (Passive Infrared), Sensors and Detectors

Best Electronic Projects

An electronic project is basically a circuit project built using a handful of passive and active electronic parts by soldering them on a printed circuit broad or PCB. Some of […]

Photodiode, Phototransistor – Working and Application Circuits

Last Updated on October 5, 2019 by Swagatam 10 Comments

Photodiodes and phototransistors are semiconductor devices which have their p-n semiconductor junction exposed to light through a transparent cover, so that external light can react and force an electrical conduction […]

Filed Under: Electronic Devices and Circuit Theory, Electronics Tutorial, Infrared (IR), Mini Projects, Security and Alarm, Sensors and Detectors

LDR Circuits and Working Principle

Last Updated on January 1, 2020 by Swagatam 8 Comments

As the name suggests an LDR or Light Dependent Resistor is a kind of resistor that exhibit a wide range of resistance values depending on the intensity of light incident […]

Filed Under: Datasheets, Mini Projects, Security and Alarm, Sensors and Detectors

Types of Arduino Boards with Specifications

Last Updated on December 30, 2019 by Swagatam 8 Comments

In this post we present a list of around 20 popular Arduino boards that are used by engineering students and professionals for their specific application needs. The types of Arduino […]

Filed Under: Arduino Engineering Projects



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