harddrive123:
Is there a reason why a isolating resistor won't work?After thinking about it I would probably want closer to 10ohms to prevent current limiting from the port to the board (~500mA).
At 500mA, how much voltage drop will a 10 Ohm resistor give you? (Hint: Use Ohm's law)
Even at 100mA, how much voltage drop will a 10 Ohm resistor give you? (Hint: Use Ohm's law)