Good Day Rui,
I would like to know if anyone has ever use esp32 sim800l to send data to thingspeak using GSM/GPRS.
1 Answers
Hi.
I think this is the tutorial that you are looking for:https://randomnerdtutorials.com/esp32-sim800l-publish-data-to-cloud/
It is not specific for thingspeak, but it can be easily modified to use ThingSpeak.
Regards,
Sara