Zspace Linux Fix

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Contents

Project Overview

The goal of this project is to create a fix for the zspace's stereo display of content, which gets mixed up from time to time. Using additional hardware external to the computer, a fix can be made which determines if the screen is correctly initialized and displaying content with the proper stereo orientation.

Arduino Info and Tutorials

Milestones

  • Power the light intensity to frequency converter via an Arduino Uno.
  • Obtain light intensity measurement by reading frequency from the diode.
  • Write an application to read/write light-intensity to/from the Ardunio Uno by means of a tty device (e.g. "/dev/ttyACM0").
  • Create a cable with the special diode fastened in place behind a polarized lens.
  • Test the cable to make sure the polarized lens makes a difference when switching left/right screens in CalVR.
  • Integrate code with CalVR to show proof of concept.

Known Bugs/Issues

  • The ZSpace has a 50/50 chance at initializing the left and right images in an inverted manner.
    • Must be detected so screens can be inverted [again] to their correct positions.
    • Requires additional hardware to monitor which screen is being displayed.
    • Arduino Uno serves this purpose and reports light intensity of current view back to host OS.

Hardware

  • Attach the photocell using a Pin(currently programmed to Pin13) and the GND pin.
  • A resistor is needed (10Kohms?).

Arduino Software

  • The Arduino software needs to be downloaded before the Arduino itself can be programmed.
  • The specific COM port to which the Arduino is attached is an important detail involved in the programming (see below).
  • This is the Arduino program that reads and prints a photocell reading from a pin (currently programmed to be pin13) every millisecond.

Source Code

  • Source code for receiving light-intensity information from the Arduino Uno in Linux (Gray):
  • Source code for actually measuring the light-intensity from the light sensor on the Arduino Uno (Gray).
  • A windows C++ code (visual studio 2010) that prints the Arduino commands (Kubasak).
  • This program includes the assumption that the Arduino is attached to the COM3 serial port.

Developers

Software Developer

  • Thomas Gray
  • Matthew Kubasak

Project Advisor

  • Jurgen Schulze
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