ESP8266 + SIM800L: Simple Guide to Sending SMS with Arduino IDE
Sep 23, 2025 · 4 min read · Adding GSM Connectivity to ESP8266 Projects with SIM800L Introduction Cellular communication is a powerful addition to any IoT project. With a SIM800L GSM module connected to an ESP8266 NodeMCU, you can send and receive SMS messages, monitor devices ...
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