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 is an ultra compact and reliable wireless module. This is a complete GSM/GPRS module in a SMT type and designed with a very powerful single-chip processor integrating …

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, …

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 button is pressed, so …

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 …

Oct 22, 2017 · We just need connect 4 wires to SIM900A module, that is power connection (VCC and GND). And Serial communication (RX-TX). Because we use arduino UNO which is use 5V …

For this guide, we will be using the AE GSM SIM900A module. 1. First, we will need to insert the SIM card onto the SIM card tray on the GSM module and lock it. 2. Connect the external …

May 18, 2021 · Learn how to Interface SIM 900 GSM Module with Arduino UNO in a detailed Guide along with Arduino code and Circuit Diagram.

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 :

Another cool thing is, it can be easily interfaced with 5V supported controller boards like Arduino Uno, Arduino mega, Arduino Nano etc and also with 3.3v controller boards like Nodemcu …