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Newly Updated Circuit Projects:

Replicating an EGS002 Equivalent Board using Arduino

Last Updated on September 10, 2026 by Swagatam 12 Comments

The EGS002 board is nothing but a combination of a microcontroller with a H-bridge driver like the IR2110. So if you are interested to build your own EGS002 equivalent board with exactly identical features, then you can do it using the instructions given in the following article. So, here we are trying to build our […]

Filed Under: Arduino Projects, Inverter Circuits Tagged With: Arduino, Board, EGS002, Equivalent, Making

BQ24295 Smart Battery Charger IC with Boost + OTG

Last Updated on May 18, 2026 by Swagatam Leave a Comment

This BQ24295 IC is like a super smart charger chip. This one is not just for charging battery, but also doing many other jobs like boost converter, USB detection, power path control, and even OTG (host power supply). So we can say that this is a full battery charging and power management IC. Let us […]

Filed Under: Battery Charger Circuits, Datasheets and Components Tagged With: Battery, Boost, BQ24295, Charger, OTG, Smart

INA219 Current Sensor Circuit Diagram and Datasheet

Last Updated on May 18, 2026 by Swagatam Leave a Comment

In this post we are going to understand this sensor called INA219, and this one is like a full smart sensor. It not only tells how much current is flowing but also tells voltage, and also calculates power, all in digital form. That means it talks with microcontroller through I2C lines. It is like an […]

Filed Under: Datasheets and Components, Sensors and Detectors Tagged With: Current, Datasheet, INA219, Sensor

ACS712 Current Sensor Circuit Diagrams and Datasheet

Last Updated on July 8, 2025 by Swagatam 1 Comment

Here we are going to learn one cool and very important current sensor device which we call ACS712. This small chip that look just like a normal 8-pin IC, is actually able to sense current from any load and give us a proportional analog voltage output which we can easily feed to Arduino or any […]

Filed Under: Sensors and Detectors Tagged With: ACS712, Current, Datasheet, Diagrams, Sensor

True MPPT Solar Controller Circuit using IC 555

Last Updated on September 12, 2025 by Swagatam 26 Comments

Are you wondering if it was possible to build a very simple MPPT circuit using ordinary parts like IC 555 and IC 741, which would work most efficiently imitating a true MPPT? The answer is yes, it is possible, and we will learn about it details, in the following article. In this design I used […]

Filed Under: Solar Controller Circuits Tagged With: 555, Controller, MPPT, Solar, True

Real MPPT Solar Charger Circuit Using Arduino, LCD, and Manual/Auto Switch

Last Updated on May 14, 2026 by Swagatam 19 Comments

So in this article we are trying to make a true MPPT solar charger project using Arduino which will charge a 12V battery from a solar panel and will use MPPT logic to always extract maximum power from the solar panel. That means that even when sunlight changes, we try to adjust PWM duty cycle […]

Filed Under: Arduino Projects, Solar Controller Circuits Tagged With: Arduino, Charger, LCD, MPPT, Real, Solar

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