I need a bit of advice on how to get water flow rates/total-use into openhab.
These relatively cheap hall-effect sensors that look like they mount inline with the water inlet.
I found a similar project on github using an auduino. That said, I’d prefer to avoid the Auduino route if I already have a knx binary input.
It looks like they put our a rising and falling pulse. My understanding is that this could be collected by a KNX binary input for floating contacts (there are also 24v and 240v options). If I can can count the pulses in something like the MDT BE-04000.01 then I can use the KNX binding to report water use.
The flow sensor (claims to) put out the following signal. Does this count as a “floating contact” in KNX-speak?
Can anyone with experience of KNX binary inputs comment on this working?