The PCB isn't really needed. It's just the ESP32 module and servo driver board (the one you can buy from Adafruit) combined on one PCB, the instructions show ho

The PCB isn't really needed. It's just the ESP32 module and servo driver board (the one you can buy from Adafruit) combined on one PCB, the instructions show how to wire those up separately (I stared at the PCB for a few minutes trying to figure out what it had to do with hacking sats... It's just a motor driver/servo interface PCB).