User manual

14.0 APPENDIX: GPIO

96 R599791 - FORCE 3D User Manual

14.0APPENDIX: GPIO

This section explains how to use a GPIO link from the projector to external equipment, such as devices for 3D

synchronizing.

14.1 GPIO Port

The GPIO 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 7 pins available on the 9pin D-Sub GPIO connector, which are conﬁgurable

via RS-232 commands or Web interface. See Figure B-1 -

GPIO Connector. The other two pins are reserved for ground and power - see table below for pin identiﬁcation.

GPIO Connector

GPIO PINS

The serial cable required for connecting the external device to the projector’s GPIO connector, must be compatible

with the external device.

14.2 Conﬁguring the GPIO

The GPIO connector can be conﬁgured to automate any number of events using the serial command code GPIO.

Each Pin is deﬁned as either an input or output depending on the desired outcome. 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 GPIO command, you can also set the state of each output 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.

A low state (or value of 0) will be read on an input pin if the circuit attached to the pin is open. A high state (or value

of 1) will be read on an input pin if the circuit attached to the pin is shorted to ground. This corresponds to a switch

PIN# Signal

Pin 1 12V (200mA)

Pin 2 GPIO 2

Pin 3 GPIO 4

Pin 4 GPIO 6

Pin 5 Ground

Pin 6 GPIO 1

Pin 7 GPIO 3

Pin 8 GPIO 5

Pin 9 GPIO 7

1 2 3 4 5

6 7 8 9