I have an Arduino Due that is connected both over native USB to PC and a 12v power supply in the Jack.
Mounted on the Arduino I have a custom PCB that drives 3 motor drivers. The Motor drivers are powered via the arduinos VIN Pin with 12v.
As Ive read elsewhere the arduino automatically chooses the 12v powersupply in this case. My question is: If the 3 motor drivers exceed the 1amp that the powersupply can supply, will the arduino encounter errors/shutdown or automatically switch back to USB for power supply?
If so, is there a way I can force the arduino to take the USB 5v even though 12v are connected through the Jack?
Also, how much current can I safely drive through the VIN Pin?