In this system, two solenoid coils connected in series and wound vertically serve as the transmitter coil, while two independent and mutually perpendicular solenoid coils serve as the two receiver ...
[Adrian] demonstrates the actuator under the control of an Arduino, which switches power to the coil to move it up and down. He also notes that the design is similar solenoids and voice coil style ...
Turn any electrical irrigation valve into a smart-valve.. or run your pumps on a smart schedule based on your climate! This homebridge plugin exposes a multi-zone irrigation sprinkler dummy control ...