How to Send SMS to GSM Module Using Arduino

Introduction

Sending SMS using GSM modules is becoming a popular method of communication in various applications. It plays a crucial role in interpersonal and business communication. The combination of Arduino UNO, SIM900 GSM module, and a 16×2 LCD display provides an efficient and user-friendly way to send SMS messages. In this article, we will discuss the step-by-step process of how to send SMS to a GSM module using Arduino UNO, SIM900 GSM module, and a 16×2 LCD display.

Explanation of SMS to GSM Module using Arduino

Arduino UNO:

Arduino UNO is a microcontroller board based on the ATmega328P. It has 14 digital input/output pins, 6 analog inputs, a 16 MHz quartz crystal, a USB connection, and an ICSP header. The Arduino UNO can be programmed using the Arduino software, making it easy to build and control electronic projects. It provides a platform for beginners and advanced users alike to explore and create various applications.

SIM900 GSM Module:

The SIM900 GSM module is a complete Quad-band GSM/GPRS solution, which can be used for multiple applications such as mobile phones, M2M (Machine to Machine) communication, and SMS-based projects. It operates at frequencies of 850/900/1800/1900 MHz, making it compatible with GSM networks worldwide. The module communicates with the Arduino UNO via serial communication.

16×2 LCD Display:

The 16×2 LCD display is a common alphanumeric display module widely used in electronic projects. It has 16 columns and 2 rows, allowing it to display 16 characters per line. The LCD display provides a visual interface to display important information or status updates. It can be easily interfaced with Arduino UNO using a few digital pins.

Now let’s dive into the process of sending SMS messages to a GSM module using Arduino.

Step 1: Connect Arduino UNO and SIM900 GSM Module Connect the TX (Transmit) pin of the GSM module to the RX (Receive) pin of the Arduino UNO. Similarly, connect the RX (Receive) pin of the GSM module to the TX (Transmit) pin of the Arduino UNO. Make sure to connect the ground (GND) pins of both devices as well.




Step 2: Connect the LCD Display Connect the LCD display to the Arduino UNO as follows: Connect the VCC pin of the LCD display to the 5V pin of the Arduino UNO. Connect the GND pin of the LCD display to the GND pin of the Arduino UNO. Connect the SDA pin of the LCD display to the A4 pin on the Arduino UNO. Connect the SCL pin of the LCD display to the A5 pin on the Arduino UNO.

Step 3: Power Supply Power the GSM module with a separate power supply or use a USB connection if available. Make sure to provide sufficient power to the GSM module to avoid any operational issues.

Programming the Arduino UNO: To send SMS messages to the GSM module, we need to program the Arduino UNO using the Arduino Software. Below is an example code that initializes the GSM module, connects to the GSM network, and sends an SMS message.

How to Send SMS to GSM Module Using Arduino
How to Send SMS to GSM Module Using Arduino

Circuit Diagram of SMS to GSM Module using Arduino

This project can be designed using a few basic components. The circuit diagram of this project is shown below.

How to Send SMS to GSM Module Using Arduino Circuit Diagram
Send SMS to GSM Module Using Arduino Circuit Diagram




More Circuit Layouts






Components List of SMS to GSM Module using Arduino

Following is the list of all components used in this project:

  • ARDUINO UNO
  • SIM900 GSM MODULE
  • 16X2 LCD
  • JUMPER WIRES
  • VERO BORD

Arduino Code:

Conclusion of SMS to GSM Module using Arduino

In conclusion, sending SMS messages to a GSM module using Arduino UNO, SIM900 GSM module, and a 16×2 LCD display is a straightforward and effective method. By following the steps outlined in this article, one can easily set up the required hardware and program the Arduino to communicate with the GSM module. This opens up a wide range of possibilities for communication and remote control applications. Whether it be for home automation, security systems, or any other application that requires wireless communication, this system can provide a reliable and efficient solution. With the increasing availability and affordability of GSM modules, implementing SMS functionality in various projects has become more accessible than ever before. So, why wait? Start exploring the endless possibilities of sending SMS to GSM modules using Arduino UNO, SIM900 GSM module, and a 16×2 LCD display today!

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For more project and circuit diagrams, you can go through the Schematics in the main menu where you can find many interesting projects and circuit diagrams like audio amplifier circuits, voltage booster circuitbattery charger circuit and timer circuits etc., which are all beginner circuit projects. Feel free to check them out!

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