Hi! I’ve a project where I want to sense the temperature/humidity where I got no access to either wifi/ethernet connections or power and want send a notification without using too much power being on a battery.
So far I got thinking around using a Adafruit Feather or likewise with a gsm module but that looks quite expensive (which is not a deal breaker but…). Another thing that came up was to utilize radio but I don’t even know if that is possible since I got no experience there.
Previous projects has been various sensing stuff with raspberry pi’s but those boards feels a bit overpower for a “lite” project as this.