arduino gsm security alarm. Working of the system is very simple and self-explanatory. When input power is applied to the system, the system goes into standby mode. However, when the terminals of ...

I would have used an optocoupler to keep the alarm system isolated from the arduino. Also would have used Lua with NodeMCU interpreter on the ESP-01…. it’s much easier and cheaper. No Arduino.

The system operates off mains power but swaps to a 1000mAH 9V backup battery during a power outage, logging the time and sending out the SMS alerts. A second message informs the contacts when ...

SMB has unveiled a new open source Arduino SMS switch box and gateway they have created called the SensorMessageBox, which is Arduino compatible and provides a simpler way to control SMS messages ...

Instructables user MakerBee's alert system uses an Arduino microcontroller and a dual-axis accelerometer. When your washer and dryer stop vibrating, the machine will know and alert you accordingly.

Microsoft and Arduino said that Windows 10 will be "the world's first Arduino-certified operating system." Arduino isn't running Windows 10 directly, though; as of now, Arduino boards have gained ...