I need some smartification for dumb ferraris meter. I do not have power supply there, not always access, meter is behind a pane of glass and wifi... Is if at all bad. IR reading seems to be the easiest one and probably power efficient running on batteries. But if they drain I miss readings and need to fix them after restoring power. It seems not very reliable more like guessing. Camera needs probably more power, but it reads the actual meter values. #ferraris #meter #homeassistant