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Newly Updated Circuit Projects:

32V, 3 Amp LED Driver SMPS Circuit

Last Updated on November 9, 2025 by Swagatam 228 Comments

32v3ampsmpscircuit

In this article I have explained a 32V, 3 amp SMPS circuit which may be specifically used as an SMPS 100 watt LED driver, rated with the same specs. The circuit of the proposed 32 V, 3 amp smps led driver may be understood with the the help of the following points: Circuit Operation The […]

Filed Under: Lamps and Lights Tagged With: 32V, Driver, LED, SMPS

Introduction to EEPROM in Arduino

Last Updated on November 8, 2025 by Swagatam 16 Comments

arduino photo

In this post I have explained what EEPROM is, how data is stored on built in EEPROM on Arduino board’s Microcontroller and also practically test how to write and read data on EEPROM by a couple of examples.   Why EEPROM? Before we ask what EEPROM is? It is very important to know why EEPROM […]

Filed Under: Arduino Projects Tagged With: Arduino, EEPROM, Introduction

Mobile Phone Controlled Robot Car Using DTMF Module

Last Updated on November 7, 2025 by Swagatam 3 Comments

L298N

In this project we are going to control a manual robot through our cellphone using DTMF module and Arduino. By: Ankit Negi, Kanishk Godiyal and Navneet Singh sajwan INTRODUCTION In this project two cell phones, one for calling and one for receiving the call are used. The phone receiving the call is connected to the robot […]

Filed Under: Arduino Projects Tagged With: Controlled, DTMF, Mobile, Module, Phone, Robot

Line Follower Robot Circuit using Arduino

Last Updated on November 7, 2025 by Swagatam 9 Comments

IMG 20170904 143144

In this post I have explained how to build a line follower robot circuit using Arduino, which will run over a specifically drawn line layout and will faithfully follow it as long as it is available and traceable by its sensors. By Navneet Sajwan What is a Line Follower Robot An autonomous robot is a machine […]

Filed Under: Arduino Projects, Automation Projects Tagged With: Arduino, Follower, Line, Robot

Password Controlled AC Mains ON/OFF Switch

Last Updated on November 7, 2025 by Swagatam 1 Comment

LCD bb

In this post I will show how to construct a password based mains ON/OFF switch circuit, which can turn ON and OFF the AC mains supply, only when correct password is entered. This prevents the danger of electrocution of the technician who might be currently working with the high voltage lines and equipment. Password Protection […]

Filed Under: Arduino Projects Tagged With: AC, Controlled, Mains, OFF, ON, Password

Color Detector Circuit with Arduino Code

Last Updated on November 7, 2025 by Swagatam Leave a Comment

schematic 1

In this post I will show how to construct a circuit which can detect color and trigger respective assigned relays. This project is accomplished using TCS3200 color sensor and Arduino board. Color Sensing by TCS3200 If you haven’t read the previous article, please go through it where we have discussed the basics of color sensing […]

Filed Under: Arduino Projects, Sensors and Detectors Tagged With: Arduino, Code, Color, Detector

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