Cheap tank level sending units - and a thought about dual station

[Saqqara]

I guess where I'm lost is where to implement this code. I know Sailoog recommended that an Openplotter plugin could be made, but in the interim it seems SignalK Server plugins has become a good way to distribute this kind of thing. I'm not much of a coder but it seems like one could use https://github.com/jncarter123/signalk-r...-pi-bme280 as a template and make it do what you do with the PCF8574A in tank-level.py. Then a breakout board like https://www.waveshare.com/pcf8574-io-exp...-board.htm could make this a reasonably accessible undertaking for more boaters. Does this seem right?