ESP32 Forum

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

I too am trying to figure this out and have spent several weeks on it so far.

I've tried both SoftwareSerial and HardwareSerial and obviously on this board HardwareSerial would be the way to go. I've tried the different serial interfaces (0,1 and 2) with no luck.

I've also experimented with the TinyGSM and the Hologram SIMCOM libraries as well just trying to get a connection or the board to recognize the SIM800L.

I have both Hologram and Ting to test with but can't get either one working. It would be great to figure out how to get this working! Going to keep trying different things and hoping to get something to work. All my tests have either failed to connect or they crash and the ESP32 restarts.

Thanks in advance for any help with this!!!