TTGO ESP32 / LoRa based sensor

[bertrik]

Hi,
I'm also working on a LoRaWAN node for sending particulate matter, more info at https://revspace.nl/LoraWanDustSensor. I am considering to use the exact same message as you are using. However, I see that you send the concentration using only two bytes, in units of 0.01 ug/m3. Is this really convenient? The resolution probably isn't really needed but the maximum value is limited to 655.35 ug/m3 this way. I think on certain occasions this can be easily exceeded, for example on new year's eve.