No Phones At The Table – Functional Diagram – Rishi Agarwal and Annie Pyle

We want to shame people for using their phone at the dining table. We will detect a phone by the brightness of its screen. A series of photoresistors installed around the perimeter of the underside of the table will detect changes in light levels. If one photoresistor's readings spike, then we can assume that there is a phone there. A ring of LEDs installed in the center of the table will then light up, shaming the offender by pointing to the sensor that spiked. We noted that if the room's lights are turned on, then all the sensor's readings will spike which would trigger a false positive. This has to be specifically handled in the Arduino code.