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Line Follower Robot Circuit without Microcontroller or Arduino

Last Updated on May 16, 2026 by Swagatam 8 Comments

line follower diagram

In this article I have explained a simple line follower robot circuit, also known as line tracker vehicle, using just a couple of op amps from the IC LM324 and a few other components, without using complex Arduino or microcontrollers. It means this project can be built without any coding, just by using discrete components, […]

Filed Under: Automation Projects Tagged With: Arduino, Follower, Line, Microcontroller, Robot, without

Arduino 2-Step Programmable Timer Circuit

Last Updated on May 14, 2026 by Swagatam 57 Comments

Arduino programmable timer circuit

In this article I have explained how to make a simple 2-step Arduino programmable timer circuit, which can be used to switch an electrical load ON/OFF with independently adjustable ON and OFF timings. For example if you want a light to remain ON for 24 hours and OFF for 2 hours, you can simply do […]

Filed Under: Arduino Projects, Timer and Delay Relay Tagged With: Arduino, Programmable, Step, Timer

Types of Arduino Boards with Specifications

Last Updated on May 14, 2026 by Swagatam 22 Comments

Arduino Uno WiFi rev 2

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 boards discussed here are designed with a range of unique features and specifications to suit a desired application in the most effective way. The range […]

Filed Under: Arduino Projects Tagged With: Arduino, Boards, Specifications, Types

Arduino 3 Phase Inverter Circuit with Code

Last Updated on May 21, 2026 by Swagatam 169 Comments

driver

An Arduino three phase inverter is a circuit which produces a 3 phase AC output through a programmed Arduino based oscillator. In this post I have explained how to make a simple microprocessor Arduino based 3 phase inverter circuit which could be upgraded as per user preference for operating a given 3 phase load. We […]

Filed Under: Grid and 3-Phase, Inverter Circuits Tagged With: Arduino, Code, Inverter, Phase

How to Connect MOSFET with Arduino using BJT as Level Shifters

Last Updated on September 17, 2026 by Swagatam 14 Comments

BJT PNP NPN pinouts

The interfacing of power devices like BJTs, and MOSFETs with Arduino output is a crucial configuration which allows switching high power loads through low power outputs of an Arduino. In this article we elaborately discuss the correct methods of using or connecting transistors like BJTs and mosfets with any microcontroller or an Arduino. Such stages […]

Filed Under: Electronics Theory Tagged With: Arduino, BJT, Connect, MOSFET, Transistors

Learning Basic Arduino Programming – Tutorial for the Newcomers

Last Updated on May 20, 2026 by Swagatam Leave a Comment

arduino led

In this tutorial I have explained how to do basic Arduino programming through example codes and sample programs. This tutorial can be an extremely valuable course for all the newcomers who wish to grasp the basics through easy, understandable language. Introduction According to wikipedia a microcontroller is equivalent to a mini computer built inside a […]

Filed Under: Arduino Projects, Electronics Theory Tagged With: Arduino, Basic, Learning, Newcomers, Programming, Tutorial

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