During experimentation in- and outdoors it was determined that a narrowband, printed (PCB) antenna was optimal for soil moisture sensing purposes.

At its heart, a moisture sensor measures how quickly (or slowly) a capacitor charges through a resistor, but in these sensors the capacitor is not a literal component, but is formed by two PCB ...

A project from the University of Maine monitors soil moisture using AI that over time learns to make a sensor network as efficient as possible, creating a low-energy way to track climate change ...