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How to Make LED Air Pollution Meter Circuit with Arduino

Last Updated on December 5, 2024 by Swagatam 3 Comments

In this project I will show how to construct an air pollution meter using MQ-135 sensor and arduino. The pollution level in the air is indicated by series of 12 LED. If higher the number of LEDs glows, the higher the pollution content in the air and vice versa.   Overview This project can prove […]

Filed Under: Arduino Projects Tagged With: Arduino, LED, Meter, Pollution

GSM Fire SMS Alert Project

Last Updated on December 5, 2024 by Swagatam 16 Comments

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In this article I will show how to construct a GSM fire alert circuit system using Arduino and DHT11 sensor, which will alert the user via text message (SMS), regarding a fire hazard within the premise where it is installed. Using DHT11 Sensor We are using DHT11 sensor for sensing unusual temperature rise around the […]

Filed Under: Arduino Projects, Security and Alarm Tagged With: Alert, Fire, GSM, Project, SMS

How to Send and Receive SMS Using GSM Modem

Last Updated on December 5, 2024 by Swagatam 5 Comments

In this article I have explained, how to send and receive SMS using GSM modem which is controlled by Arduino. Let us see, what GSM modem is, how to interface it with Arduino, how to send SMS with the setup. We are also going to explore what are all applications we can achieve with GSM […]

Filed Under: Arduino Projects Tagged With: GSM, Modem, Receive, Send, SMS

Password Security Lock Circuit Using 4×4 Keypad and Arduino

Last Updated on December 5, 2024 by Swagatam 5 Comments

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In this post I will show how to construct a password security lock circuit, which can be accessed by a 6-digit password. To be more precise it is alpha numeric password.   Hardware for this Project We are going to utilize 4×4 keypad, which consists of 0 to 9 decimal values, two special character ‘#’ […]

Filed Under: Arduino Projects Tagged With: 4x4, Arduino, KeyPad, Lock, Password, Security

How to Interface 4×4 Keypad with Arduino

Last Updated on December 5, 2024 by Swagatam 2 Comments

keypad

In this post I have explained how to interface a 4×4 keypad with Arduino. We are going to see what is a keypad, how it is constructed and a how to program the Arduino to receive keystrokes form the keypad and print them in serial monitor. What is a keypad? A keypad is a portable […]

Filed Under: Arduino Projects Tagged With: 4x4, Arduino, Interface, KeyPad

How to Make a Simple Math Calculator using Arduino

Last Updated on December 5, 2024 by Swagatam 2 Comments

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In this post, I will show how to construct a calculator using Arduino, which can perform far complex arithmetical calculation than an ordinary calculator. The motto of this post is not to make a calculator using Arduino, but to showcase the arithmetical capability of Arduino, which performs various complex data interpretations and calculations from the […]

Filed Under: Arduino Projects Tagged With: Arduino, Calculator, Math, Simple

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