Code for the NodeMCU to report Doorbell, Override, and state
OVERRIDE_PIN: Pin 5 (D1)
DOORBELL_PIN: Pin 2 (D4)
STATE_PIN: Pin 4 (D2)
BUZZER_PIN Pin 0 (D3) - this is actually the RED led
STATUS_PIN Pin 14 (D5) - green led that indicates life and WiFi status