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Newly Updated Circuit Projects:

Digital Clock Circuit Using 16 x 2 LCD Display

Last Updated on May 14, 2026 by Swagatam 6 Comments

P 20160419 235234

In this post I have explained how to make a simple digital clock using Arduino and a 16 x 2 LCD display. Introduction As an electronics enthusiast at a stage we would have thought, how to make a digital clock, especially who are interested in the field of digital electronics. In this article we are […]

Filed Under: Arduino Projects Tagged With: 16x2, Clock, Digital, Display, LCD

Solar Inverter for 1.5 Ton Air Conditioner

Last Updated on August 3, 2020 by Swagatam 71 Comments

ac2Binverter

Here I have explained how to build a solar inverter circuit for a 1.5 ton air conditioner (AC) for powering the AC during daytime directly from solar panels without depending on grid power. The idea was requested by Mr. Subhashish. Main Specifications A 1.5 ton air conditioner is equivalent to an approximately 1.5 x 1200 […]

Filed Under: Solar Controller Circuits Tagged With: Conditioner, Inverter, Solar

Foolproof Laser Security Alarm Circuit

Last Updated on July 3, 2019 by Swagatam 11 Comments

foolproof

In this post I have explained a a simple yet versatile foolproof laser security alarm circuit which can be used for securing any concerned premise with extreme accuracy. The idea was requested by GPS. Circuit Objectives and Requirements Your circuits were very useful to me. Thanks for all your posts, but i wanted something different […]

Filed Under: Security and Alarm Tagged With: Alarm, Foolproof, Laser, Security

Battery Backup Time Indicator Circuit

Last Updated on May 17, 2026 by Swagatam 2 Comments

In this post I have explained a battery backup time indicator circuit for monitoring the battery power usage by the connected load and for estimating the approximate remaining backup time of the battery. The idea was requested by Mr. Mehran Manzoor. Circuit Objectives and Requirements I want a circuit which shows remaining time of backup […]

Filed Under: Battery Charger Circuits Tagged With: Backup, Battery, Indicator, Time

Triac Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 57 Comments

triac battery charger circuit 750x445

A triac based battery charger replaces a normal relay for automatically cutting off power to the battery very efficiently. In this post I have explained a simple a battery charger circuit using a triac auto shut-off facility. The circuit can be used for charging any high current, high AH types battery with a full-charge auto […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Triac

How to Make Arduino on Breadboard – Step by Step Instructions

Last Updated on May 14, 2026 by Swagatam 18 Comments

breadboard arduino

In this article I have explained how to make an Arduino on a breadboard. We are also going to see what is an Arduino, how to program it and how to assemble them as standalone microcontroller on a breadboard or PCB. Arduino was a boon for those who wanted to learn microcontrollers and embedded system […]

Filed Under: Arduino Projects Tagged With: Arduino, Breadboard, Instructions, Step

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