02-13-2019, 04:54 AM
Hey seb540, yeah something is preventing the I2C from working so the eeprom reacts very slowly and won't give a correct reading. Do you happen to have any Atlas circuits connected or anything else on the I2C pins? If so try disconnecting it and see what you get. Once you get 255 you have to completely power down the controller which means also unplugging from computer, then turn back on and check serial again. A simple reset or close/open the serial monitor won't do it. I've had that happen after programming but always doing the power down fixes it.
