System Integration; Configuring The Gpio - Christie Roadster User Manual

The GPIO (General Purpose Input/Output) connector located on the input panel provides a flexible method of
interfacing a wide range of external I/O devices to the projector. There are seven GIO pins available on the
nine-pin D-Sub GPIO connector, which are configurable via RS-232 commands. The other two pins are
reserved for ground and power – see table below for pin identification.

Configuring the GPIO

Roadster, Matrix WU, Mirage S+/HD/WU User Manual
020-100002-05 Rev. 1 (02-2010)

System Integration

GPIO Pins
1
2
3
4
5
6
7
8
9
The serial cable required for connecting the external device to the projector's GPIO
connector, whether it's a standard serial cable or a custom one, must be compatible
with the external device.

The GPIO connector can be configured to automate any number of events using the
serial command code GIO. Each pin is defined as either an input or output
depending on the desired outcome. In general, configure the pin as an input if you
want the projector to respond to something the device does and as an output if you
want the external device to respond to an action taken by the projector. For example,
configure the pin as an output if you want the lighting in a room to automatically dim
when the projector is turned on.
By using the GIO command, you can also set the state of each pin as high or low. By
default, the state of each pin is high. The voltage applied to pins in the high state is +
3.3V.
Example 1. Turn room lighting on when the projector is turned off. (Assumes a
control/automation unit is configured to turn the lights on when pin 2 of its input goes
high.)
Pin #
+ 12V (200mA)
GPIO 1
GPIO 2
GPIO 3
Ground
GPIO 4
GPIO 5
GPIO 6
GPIO 7
A p p e n d i x C
Signal
C-1