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2
Modes
The GpiO box has 3 modes, the Modes are selected using a 3 position slide switch
and are only checked on power up. Operation of the slide switch once the box
has been turned on will have no immediate effect. The 3 modes are:
1.
2-Button Mode
Switch to the LEFT
2.
Button learn Mode
Switch Centre
3.
4-Button Mode.
Switch to the Right
In
2-Button mode
the GpiO BOX will accept a single Control per XLR.
This may be illuminated. In this mode a control should be wired as
Follows:
A MIDI message is fired when the control line (pin 2) is shorted to
ground (pin 1)
It should be notes that Pin 3 does NOT have a resistor in line. When
attempting to light an LED a resistor should be added in series.
If using That Little Box “Button Box” products a resistor is included
in the design.
2-Button mode is selected by positioning the slide switch to the left,
closest to XLR 1+2 when the GpiO BOX is powered up
In
4-Button mode
the GpiO BOX will accept up to 2 controls per XLR . These may
not be illuminated. In this mode a Control should be wired as Follows:
A MIDI message is fired when either control line (pin 2 or 3) is shorted to ground
(pin 1).
4-Button mode is selected by positioning the slide switch to the right, closest to
XLR 3+4 when the GpiO BOX is powered up
Status LED
The Power/Status LED displays the currently selected mode and shows when
MIDI data is sent. In 2-Button mode the LED will be solid amber and will blink
red when MIDI data is sent. In 4-Button mode the LED will be solid red and will
blink amber when MIDI data is sent.
4-Button Mode
Pin
Function
1
Ground
2
Control 1
3
Control 2
2-Button Mode
Pin
Function
1
Ground
2
Control
3
Illumination
