SIM900A is a GSM module that function like phone. It can send a message, call a phone number and use GPRS to send data. Here’s the simple feature taken from it’s datasheet :

This code sets up communication between an Arduino and a GSM module (SIM900A) using SoftwareSerial. It allows the user to send an SMS or make a call by sending specific …

SIM900A Modem is built with Dual Band GSM/GPRS based SIM900A modem from SIMCOM. It works on frequencies 900/ 1800 MHz. SIM900A can search these two bands automatically. …

With a little help from a GSM module (like the kind in your cellphone), you can start sending messages and calling from your Arduino project. This article will show you how, step by step. …

Oct 22, 2017 · This blog post provides a good starting point for beginners interested in using the SIM900A GSM module with an Arduino Uno. It clearly explains the basic communication …

SIM900A is dual band GSM/GPRS 900/1800MHz module board used to utilize GSM and GPRS services around the globe. It is used to make/receive voice calls, send/receive text messages, …

Mar 13, 2024 · This Arduino code is designed to interface with a GSM module using AT commands for sending SMS messages, receiving live SMS, and making phone calls. The …

Mar 12, 2023 · In this tutorial, we are going to learn how to interface the SIM900A module with Arduino and also build a call alert system. This circuit will call to a specified number if the …

Jan 12, 2021 · In UNO we have to use 5V TXD and RXD pins of the GSM Module. //Begin serial communication with Arduino UNO/NodeMCU and Arduino IDE (Serial Monitor) …

Feb 9, 2025 · GSM Sim900A with Arduino: Following are some of the projects which explain GSM Sim900A interfacing with Arduino and GSM Sim900A Arduino Code. Following are the …