CUBE 3D Glasses

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CUBE 3D Glasses

• Group 22
• Lisa Litherland

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Introduction

• Lenses open and close to create 3D effect
• Glasses operate on IR signal
• IR signal cannot pass through walls of CUBE

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Objective

• Transmit signal to glasses using RF

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Benefits

• Can close final wall of CUBE
• Full 6-wall virtual experience
• Do not have to hold transmitter in front of you
• No bulky cords

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Original Ideas

• Radio Shack TX/RX
• Too bulky
• Receiver needed to be plugged into outlet

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Original Ideas (cont.)

• Wireless headphones
• Requires understanding circuitry of headphones
• Expensive (60 - 500)

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Linx Modules

• Small
• Light-weight
• Easy to implement
• Cheap
• TX - 4.90
• RX - 10.65

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Original Layout
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Final Layout
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3 Main Stages

• IR Detector
• RF System
• IR Emitter

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IR Detector

• Computer sends signal to StereoGraphics IR
  emitter
• Detector captures IR signal
• Sent to data in of TX

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IR Detector
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Input Signal
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RF SystemTX

• Powered by 5V wall power supply
• Data in is from IR Detector

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Transmitter
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RF SystemRX

• Powered by 3V lithium battery
• Small
• Light-weight
• Data out sent to IR emitter

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IR Emitter

• Must amplify signal from RX
• Power not adequate to turn on LED
• Use a BJT transistor 2N2222A
• Connect Vcc to emitter
• Connect anode of IR LED to collector

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Receiver Circuit
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Testing

• Oscilloscope
• Viewed input signal
• Checked shape of output signal
• Measured input/output voltages
• Frequency Counter
• Frequency at input and output match

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Testing (cont.)

• Glasses
• Check that LED makes lenses switch
• Adequate range (200ft)
• Signal goes through CUBE walls

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Challenges

• Short battery life
• Flickering
• Old fashioned oscilloscope
• No Autoscale!

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Successes

• Designed and implemented complete working system
• Completed work on time
• Implemented low cost solution

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Future Uses

• Same design can be used to send data from person
  inside CUBE to computer
• Heart monitor
• Skin conductivity

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Questions?