This github includes the complete circuit & code for Interfacing Bluetooth Module & GSM Module with single Arduino using Software Serial ...

An interfacing intrusion-detector unit is also connected to the microcontroller-based ... The circuit is highly-flexible so that you can use any SIM900A modem (and ofcourse any Arduino Uno board) ... ...

This paper represents a design and implementation of a Wireless Heart rate monitor system using ARDUINO Lilypad which is enabled with the feature of sending SOS messages or calls through GSM module.

This project enables remote control of a motor (such as a borewell pump motor) via GSM network using an Arduino Uno and SIM900A GSM module. The motor can be turned ON or OFF by sending SMS commands or ...