Hi, when I power up my BigBox the Rumba seems to start fine but after the start up screen it immediately reports "KILLED". Any idea what the cause could be?
There is the ability to "kill" a print in some 3D printing controllers using Marlin firmware. Try a search on kill_pin or look for a schematic of the Rumba board, maybe there is a "kill_pin" connection (that can be wired up) I suspect that this is an emergency stop in case something goes drastically wrong and you want to kill the print in an instant. Maybe you have one of the wires on the wrong pins on the board?
It would be useful to know more about the "kill_pin" as it could be a useful addition to have an emergency stop button at the front of the printer. More information here.. http://ohmeye.com/2015/disabling-kill_pin-in-marlin-3d-printer-firmware/