[Renzo Mischianti]’s friend has to keep a water tank topped up ... with a solar-powered sensor that communicates over LoRa, and a controller that receives the water level readings and powers ...

Tank level sensor, Float level switch, Fluid level sensor, Level controller, Level gauge, Level indicator, Level probe, Level sensor, Level system, Level transmitter, Liquid level sensor, Oil level ...

Directly adjacent to the float track on the outside of the tank is a long PCB with a couple of long, sinuous traces. These connect to an LX3302A inductive sensor IC, which reads the position of ...