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Newly Updated Circuit Projects:

How to Send and Receive SMS Using GSM Modem

Last Updated on February 13, 2026 by Swagatam 5 Comments

P 20160912 005857 2

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

Control a Relay ON OFF Using SIM Card, Mobile Phone, and Arduino

Last Updated on February 12, 2026 by Swagatam Leave a Comment

This project I will explain how we can control a relay remotely using a SIM card and a normal mobile phone, with help of Arduino and a GSM module. The relay can be turned ON or OFF by sending an SMS or by making a phone call to the SIM card placed inside the GSM […]

Filed Under: Arduino Projects, Automation Projects, Wireless Circuits Tagged With: Card, Control, OFF, ON, Relay, SIM

How to Manufacture Automobile Electronic Parts and Earn a Handsome Income

Last Updated on February 12, 2026 by Swagatam 4 Comments

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To set up an auto electrical manufacturing unit, it’s important to have a thorough knowledge regarding the various technicalities associated with the field. The article makes a comprehensive approach and explains all the issues related to the subject. Introduction We begin with the basic raw materials and man power required for the intended installations and […]

Filed Under: Automobile Electronics Tagged With: Automobile, Earn, Electronic, Handsome, Manufacture, Parts

Arduino 2-Step Programmable Timer Circuit

Last Updated on February 11, 2026 by Swagatam 56 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

Password Security Lock Circuit Using 4×4 Keypad and Arduino

Last Updated on February 9, 2026 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 ‘#’ and […]

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

Make this Simple Weather Station Project for Homes and Offices

Last Updated on February 9, 2026 by Swagatam 6 Comments

In this post I will show how to construct an interesting Arduino based mini weather station project, which can show you ambient temperature, humidity, pressure, air quality and much more data from your surroundings, which can be used to predict weather from home. If you are interested in meteorology this project might come in handy […]

Filed Under: Arduino Projects, Sensors and Detectors Tagged With: Homes, Offices, Project, Simple, Station, Weather

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Recent Comments

  • Duff Kindt on Door Security Alarm Circuit for Alerting if Door was Opened
  • Swagatam on Arduino 2-Step Programmable Timer Circuit
  • Swagatam on How to Manufacture Automobile Electronic Parts and Earn a Handsome Income
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  • Swagatam on Door Security Alarm Circuit for Alerting if Door was Opened

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