Arduino Home Security GSM Alarm * An Arduino + SIM900A Project * T.K.Hareendran * Tested at TechNode ... (3,4); // RX and TX pins to communicate with GSM module #define msg_key 7 #define call_key 8 ...

The Spark Electron was released a few days ago, giving anyone with the Arduino IDE the ability to send data out over a GSM ... project, be aware you have an option of soldering the Fona module ...

The Raspberry Pi is a credit card-sized computer capable of running full-fledged Linux distributions such as Raspberry Pi OS, ...

Presumably, the core phone module will have regulatory acceptance ... Of course, we’ve seen GSM and cell phone shields for Arduino before. Difficult to imagine sticking those in a dog collar ...

Well, the name is definitely cool, but you’re probably wondering how this project works. It uses an Arduino Uno, an LCD readout, and a sonic ranging module to judge various distances.