GSM support

[krakson83]

Can you add support to SIM module connected to esp8266 ?
I want to use my air checker in place where the WiFi is unavailable.
SIM module like sim900 or sim800L.

[pjgueno]

Hi,
Are you sure you can then use à Network with those modules?

I would use the NB-IOT module of Sparkfun.

https://github.com/aircarto/MobileAir

It worked but still need some work.