usb connector - use the "5th" wire

Using Arduino General Electronics
#1

Hi Guys,

Im making an handheld device with buttons and lights. This is connected with an usb to the "main device"

things i need to send/recieve

5 v
ground
data (to LEDs from main)
data (from buttons to main)

now i like to hook up a LED when you plug the usb in the LED wil get on.

is it possible to use the "5th wire" for this?

#2

Mini/Micro-USB-leads do have 5 wires, although the cable does not carry 5 wires.

The 5th pin is usually used as ID, wired to ground directly or trough a resistor.

// Per.

#3

The 5th pin is "insert detect", and that's exactly what the pin is for. I think it's connected to ground when plugged in? You can check what it's connected to with your multimeter.

#4

But it has been frequently used for headsets and such.

#5

Connecting pin4 to pin5 creates an "OTG" cable for USB Host applications. Pinout

#6