OpenGarage › Forums › Hardware Questions › OG vs Adafruit Feather › Re: Re: OG vs Adafruit Feather October 11, 2016 at 6:02 am #153 RayKeymaster You are right — the read_distance() function expects a working ultrasonic distance sensor is connected on the specified pins. Without the sensor, the read_distance() function will time out causing ESP to reboot.
