Hi
I'm looking for a simple code to be able to use my small SIM800L module with my ESP32 (or ESP8266 otherwise).
Does anyone has allready succeded to send som AT commands to this module?

My goal is to send an SMS when there is a power failure from my battery powered ESP32.

Thanks a lot

TBH

Hello guys, I'm a beginner in Arduino environment. I have a question on ESP32 thing from Sparkfun : https://learn.sparkfun.com/tutorials/esp32-thing-hookup-guide I want to use 2 sensors at the same time on this microcontroller. This board has 2 I2C buses but only one SCL and one SDA pin, I know it'...

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