Hello. Last night I configured an esp8266 gateway and integrated it into MQTT/Home Assistant/Nodered with a couple of off the shelf 433mhz devices. So far so good, I love the project!
Now that I have a working gateway, I wondered if it’s possible to send data to the it via RF from standalone arduinos (possibly just using bare 328 chips for power saving) fitted with 433 tx modeuls placed in remote locations on battery power.
I invisige these would be in deep sleep and report temperature/humidity/distance and perhaps other data back every x minutes.
Is this something that can be done? I realise there are probably sensors out there I can buy which would be easier to integrate but I like to diy where possible, so I thought I’d ask the question.