Have been using Home Assistant for a few weeks and it’s great.
I have a project at home I’d like to hook into hassio. It’s a soil moisture monitor.
Some parts of the garden I want to monitor are 100 meters from the house. I also want the sensors to last on a battery for as long as possible and came to conclusion I could it do fairly cheaply and with lower power consumption using 433mhz.
I’ve got an Arduino mini built up with an STX822, but having trouble working out best way to receive. I have a sonoff running OMG for my PIR sensors but have realised the Sonoff doesn’t seem to handle sensor values.
What’s the best gateway to hook up to MQTT to receive a sensor value? A lot of the 433mhz libraries just seem to handle trigger messages. (Eg sonoff, RC-switch in OMG)
Would prefer a gateway that is physically separate to the hassio server because I think I need to place it closer to the sensors.
And finally is there a general purpose 433mhz based protocol that I can use to send 3 values in the message eg deviceId: 12, moisture: 1234, battery: 1234
Or should I just be investing a bit more and using something more reliable but still lower power like RFM69 to an OMG gateway, or Lora?
Any tips appreciated.