I'm trying to use Raspberry Pi to power a floppy drive with the 5V GPIO pin. I know that the floppy drive requires a voltage of 5V and a current of 1A and Raspberry Pi gives the output as following:
Maximum permitted current draw from the 5 V pin is the USB input current (usually 1 A) minus any current draw from the rest of the board. Model A: 1000 mA - 500 mA -> max current draw: 500 mA Model B: 1000 mA - 700 mA -> max current draw: 300 mA
So am I right that when using a power supply with the voltage of 5V and current of 2A to power the Raspberry Pi, 5V GPIO pin will give the output current of 1.3A? Is it safe to draw that much current from the pin or is there a maximum that you can't exceed? Also, when I use the 5V GPIO pin as an input for the floppy drive, then what GPIO pin I should use for the output that comes from it?
I'm not sure if that's possible, so I hope someone could answer these questions.