Category: Arduino Projects

Today, in the article “Sinusoidal Frequency Meter using Arduino” you will learn how to measure the frequency of sinusoidal wave using arduino. With the purposed design one can measure sinusoidal frequency of about 20 Hz to 5KHz. Features of Sinusoidal Frequency Meter using Arduino Rectifier is used thus digital in natures. Optocoupler is used in order to isolate frequency circuit and control circuit and this optocoupler is also used to generate spike. Dedicated LCD for displaying frequency. Circuit Description of Sinusoidal Frequency Meter using Arduino Circuit of sinusoidal frequency meter…

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The project “Arduino Based Temperature Controlled Fan” is extended version of previous post “Temperature Controlled Fan using Arduino”. Speed of fan depends upon the temperature it detect. This project has various features like: Features of Arduino Based Temperature Controlled Fan Automatic fan speed control according to temperature. Temperature and speed are displayed over LCD. Control Circuit and Load circuit is isolated using opto-isolator 4N35 i.e. more protection. High Power drive circuit i.e. can drive high power high voltage DC fan. Maximum temperature indication using glowing LED. Circuit Description of Arduino…

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Today in this tutorial we will see the interfacing optocoupler with Arduino (4N35 or MCT2E). Optocoupler is also called an optoisolator. But before that let’s see what an optoisolator or optocoupler is? What is Optocoupler or Opto-Isolator: Optocouplers or optical isolators are designed to electrically isolate one circuit from another while allowing one circuit to control the other. The usual purpose of isolation is to protect from high-voltage transient, surge voltages, and low-level electrical noise that could result in an erroneous output or damage to the device. Such isolators allow…

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In this article, you will learn how to Measuring Temperature using PT100 and Arduino. PT100 is a platinum resistance thermometer, which changes its internal resistance according to temperature. In the name PT100, 100 represents ohm i.e. it offers 100-ohm at 00C. Similarly, PT1000 offers 1000-ohms at 00C. PT100 is widely used in industries because of its temperature range. From the nature of the resistance thermometer, we conclude that tolerance depends upon the range we are using it. When we used to measure temperature nearer to 00C (in both positive and…

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This article shows you how to make caller ID for two wheeler’s i.e. bike or scooter. This caller ID display cell phone number when any one call you or when you call anyone while riding bike or scooter. Sometime It is difficult to identify the caller while riding two-wheeler vehicles because usually we keep our mobile either in pocket or in bag. Sometime even we get confused whether the vibration is of vehicle or of mobile. By using this simple device one can know about caller and can easily distinguished…

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This article shows you how to make arduino color sensor project using TCS230 color sensor. This project can detect almost all color according to their wave length and display it on 16×2 LCD. If we talk about the application of this project, you can use in color shorting or color matching projects, line following robot (if path is other than black and white), multi-color strip reading etc. What is TCS230 Color Sensor? This module consists 8×8 array of photodiode which detect the color and produce corresponding frequency (Square wave). So,…

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In the post-Arduino alarm clock with time setting you will learn to make a digital clock using the RTC DS3231 module with alarm and temperature indication facility. Previously, we had already posted various types of clock circuits using Arduino and RTC DS3231 like “Arduino NTP Clock using NodeMCU and DS3231”, “Arduino Digital Clock using DS3231 Pi Module“. Before starting to circuit part and software code part let’s see its features: Features of Arduino alarm clock with time setting Display date and time (day and second indication). Alarm time setting Display…

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