It is very easy to build an “SMS-controlled relay” with the help of a cheap GSM modem module and a small microcontroller board. Here, I’m using the SIM800L and Arduino Nano V3 to develop a nifty ...
This library provides easy-to-use APIs to initialize, send SMS, make/receive calls, and perform HTTP GET/POST operations with SIM800 modules via AT commands over Serial. Compatible with Arduino, ESP32 ...
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