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Light Meter Circuit with LED Bar Graph

Last Updated on May 18, 2022 by Swagatam 6 Comments

In this post we will discuss 3 different light meter circuits for measuring power of light. In the first method we will use only a solar cell and a multimeter, […]

Filed Under: LM3915 IC, Meters and Testers

Temperature Controlled Relay Switch Circuit

Last Updated on May 12, 2022 by Swagatam 13 Comments

In this article we discuss a simple temperature controlled relay circuit which can be switched ON/OFF depending on the temperature on its temperature sensor. Meaning, when the temperature on its […]



Filed Under: Heater Controllers, Mini Projects

LED Oscilloscope Circuit

Last Updated on February 23, 2022 by Swagatam 6 Comments

The simple LED oscilloscope circuit explained in this article can be used for analyzing low frequency waveform through a 10 x 10 LED matrix display. Due to the involvement of […]

Filed Under: 4017 IC Circuits, DIY LED Projects, LM3915 IC, Meters and Testers

How to Design Simple LED Driver Circuits

Last Updated on June 18, 2022 by Swagatam 33 Comments

In this post we will discuss how to design your own customized, simple LED driver circuits at home. We will learn how to calculate specific LED configurations for applying the […]

Filed Under: DIY LED Projects, Electronics Tutorial, How to Articles

Medical Store LED Cross Sign Circuit [Plus Sign]

Last Updated on January 22, 2022 by Swagatam 11 Comments

In this post we will learn how to make an interesting yet simple running LED cross sign or plus sign module for displaying in front of medical stores. Nowadays, it […]

Filed Under: DIY LED Projects

Light Controlled Sound Effect Generator Circuit

Last Updated on December 16, 2021 by Swagatam 6 Comments

This unique circuit allows you to create many different sound effect outputs simply by moving your hands over a couple of light dependent resistors, by varying the intensity of incident […]

Filed Under: Audio Projects

3 LED Battery Level Indicator Circuit

Last Updated on September 5, 2021 by Swagatam 8 Comments

The proposed 3 LED battery level indicator can be typically used for monitoring a 12 V lead acid battery charge level, through 3 distinct LED illumination. The entire circuit is […]

Filed Under: Battery Chargers

Cellphone Controlled Plant Watering Circuit

Last Updated on August 3, 2021 by Swagatam 3 Comments

In this post we will discuss a couple of circuits that will allow automatic watering of plants and flower pots, even while the owner of the house is away from […]

Filed Under: Timer and Delay Relay

Firecracker Igniter circuit [Remote Controlled with Timer]

Last Updated on August 30, 2021 by R. Girish Leave a Comment

In this post we are going to construct a few fireworks ignition circuits which can safely ignite them via IR remote and timer. We have proposed three firecracker igniter circuit […]

Filed Under: Remote Control

LED Star Circuit

Last Updated on January 11, 2022 by Swagatam 2 Comments

This circuit can be used like a tree ornament, however the LED star circuit explained here has a variation; it’s completely electronic and it provides the impression of an exploding […]

Filed Under: 4017 IC Circuits, DIY LED Projects



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