I purchased a BrewPi Spark V2 in Aug '16. Set up the Pi and Spark - everything working great! However, I now have no communication between the Pi and Spark. When I run the command "ls /dev/ttyA*" the only thing that comes up is /dev/tty/AMA0 (not seeing AMC0 or AMC1). If I run "ls /dev/tty*", I don't get ttyUSB0 or ttyUSB1 either.
So, something is wrong and I'm not sure what. I've replaced the USB cable and ensured it is fitting properly at both ends. I've also run a separate power supply to the Spark as well. The Spark has retained its last settings of Constant Fridge Mode and is holding temp just fine. I just can't communicate with it.