The IOIO board contains the following components:
USB connector (type A) female connector: Used to connect to the Android DEVice,
GND pins (9 pins): Ground connection.
VIN pins (3 pins): Used for Power supply to the board. the Voltage between 5V-15V should be supplied sub.
5V pins (3 pins): Normally used as 5V output when the board is powered from the VIN. Can be used as 5V input in case VIN is not connected.
3.3V pins (3 pins): 3.3V OUTPut.
I / O pins (48 pins, numbered 1-48): General purpose I / O pins. Some have special FUNCTIONS, see below.
power LED : Lights when the IOIO is the trapped charge in getting POWer.
stat LED : Lights briefly during power-up and then becomes under application control.
mclr pin : Not normally used Its Purpose is On the for programming the new the bootloader firmware on the IOIO BOARD.
Charge current trimmer (CHG) : Adjusts the amount of the charge current supplied on the VBUS is line of the USB to the Android DEVice. Turning in the (+) direction INCREASES charge current.