I want to build a system that will monitors various devices (BLE and WiFi) in our RV. I can get a BLE app up and running Ok. My question pertains to defining the data to be sent.
I’ve read what I can, and I guess I just don’t “get it”. I need to monitor various tank levels. I have experimented (successfully) with sending/receiving BLE data.
So my question is, where do I define my characteristic? I know there’s a (several) data sheet that defines several devices, like heart monitor, treadmill etc…. But I don’t see what I’m looking for, I guess it would be a generic tank level sensor/monitor. Some of these devices already have their own UUID’s and characteristics setup (devices sold on the market like a BLE water monitor). But anything I build, won’t.
Do I just ignore it and put anything I want? And send whatever data I want? Like, does it matter? I know I’m not breaking a law or anything. I’m more curious how in the world do you find this? I’ve gone through lots of documentation and I’m just not seeing what I think I need.
I’ve seen where you can get your own UUID, but that’s just an ID (I think) and not anything to do with data/device types.
Thanks.