The EVPR will use wireless data transmission to control the servos embedded inside of the rotor hub. An ESP32 will be at the heart of the on-board electronics, receiving the data signal and controlling the servos.

To test whether the wireless data concept will work on a spinning rotor, a Sparkfun ESP32 Thing Dev Board was placed on a fixed-pitch rotor with a battery for power. A test was run to confirm whether an LED on the board could be turned on and off remotely over WiFi.

Below are shots of the dev board setup before and after being placed on the fixed-pitch rotor. Since the built-in LED on the board would be hidden inside the rotor hub, an extra LED(rectangular blue) was connected and placed in a location that would be visible externally.

The test was successful (video below), demonstrating that the wireless system should work for controlling servos for the EVPR.