Arduino Mega 2560 was used in this code, you can change the txd_pin and rxd_pin If you have 4g/5g sim, you can set the preferred network type to 2g or 3g using your phone. A sample wiring diagram ...

GSM is a standard developed to facilitate communication between mobile devices. It's a digital cellular network technology that enables users to make calls, send texts, and access basic data services ...

Here’s an application example configured to send an SMS in response to a security ... The following is a hardware diagram of the Arduino GSM Alert system built around an Arduino Uno and SIM800L module ...

In this type of situation, SIM800L GSM/GPRS Module can come ... Blink every three seconds: When the LED on the module is blinking every three seconds, the module is connected to a network and can send ...

This simple GSM security switch project is based on Arduino Nano microcontroller (MCU) and SIM800L GSM modem (Fig. 1). The cellular-based alert system is configured to send an SMS in response ... The ...

In this project, the author is going to construct a system using a Arduino Development board and GSM module. He connects a switch/sensor to the Arduino board along with the GSM module. The user ...