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Morse Code Practice Oscillator Circuits

Last Updated on September 21, 2023 by Swagatam 6 Comments

morse code oscillator circuit using IC 4093

In this article we will explore 3 different Morse code practice oscillator circuits, for generating exact replication of Morse code signals in the form of dots and dashes. Contributed By: Anil Patil What is Morse Code Morse code is a legacy method of message encoding that uses rhythm and impulses to transmit telegraphic communication. Morse […]

Filed Under: Oscillator Circuits Tagged With: Circuits, Code, Morse, Oscillator, Practice

Touch Operated Code Lock Switch Circuit

Last Updated on February 2, 2020 by Swagatam 11 Comments

touch code lock

This touch operated electronic door lock can be used for locking any entrance through a touch keypad. The lock’s touch feature is foolproof and impossible to crack since the touch function is required to be on 3 programmed pads together or simultaneously, otherwise the lock doesn’t respond. It is a lot convenient to open a […]

Filed Under: Security and Alarm Tagged With: Code, Lock, Operated, Switch, Touch

Arduino 3 Phase Inverter Circuit with Code

Last Updated on February 7, 2021 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: Inverter Circuits, Grid and 3-Phase Tagged With: Arduino, Code, Inverter, Phase

Color Detector Circuit with Arduino Code

Last Updated on December 5, 2024 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: Sensors and Detectors, Arduino Projects Tagged With: Arduino, Code, Color, Detector

Arduino SPWM Generator Circuit – Code Details and Diagram

Last Updated on May 24, 2025 by Swagatam 74 Comments

waveform 2

In this post I have explained how to generate sine wave pulse-width-modulation or SPWM through Arduino, which can be used for making a pure sine wave inverter circuit or similar gadgets. The Arduino code is developed by me, and it is my first Arduino code, …and it looks pretty good 🙂 What is SPWM I […]

Filed Under: Arduino Projects Tagged With: Arduino, Code, Details, Generator, SPWM

RFID Security Lock Circuit – Full Program Code and Testing Details

Last Updated on August 9, 2019 by Swagatam 6 Comments

P 20161027 182018 1 p 1

In this article we will see how an Arduino based RFID reader circuit could be used for controlling a relay, which in turn could be used in security door lock applications. Overview If you haven’t yet checked the previous RFID article, please go ahead check it out, it covered the basics of RFID technology. We […]

Filed Under: Security and Alarm Tagged With: Code, Full, Lock, Program, RFID, Security

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