Stuart T' Duerson II James Holland

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PROJECT
Stuart T. Duerson II James Holland Asaf
Cohen David Abner
ECE 4006 Spring 2005 Dr. James
Hamblen
www.prism.gatech.edu/gt0914a/isis.html
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What are these guys doing again?

• Constructing a touch-free, infrared musical
  musical keyboard.
• Allows one to play music using beams of light.

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What is involved in this undertaking?

• Analog Design
• IR Sensors, Band Pass Filters, Peak
  Detectors
• Power Supply, etc.
• Software and Digital Hardware
• Custom PIC Microcontroller Setup,
  Muxes,
• Assembly Program, Java Program

Why dont you just buy the analog components?

• Doing so would be prohibitively expensive.
• We estimate we can half the cost of sensors
  etc.
• by constructing them ourselves.

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PROJECT SCHEDULE
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Digital Realm Hardware and Software

• Custom PIC setup complete.
• Completing assembly code for
• clock signals, mux switching,
• MIDI message generation.
• To do
• Construct serial interface
• to PC. (DB15)
• Program Serial Interface
• (Transmission queue, clocking)
• Java GUI Interface

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Digital Realm Timing

Constraint Max of 240 instructions can be
executed between each sampling.
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Digital Realm MIDI Serial Interface
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Analog Realm System Level Design
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Analog Realm Component Circuits
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Analog Realm Waveform Madness
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Analog Realm Future Plans

• Test 8 IR emitter\receiver pairs using muxes and
  demuxes.
• Test new IR emitter\receiver parts, optimizing
  distances and accuracy.
• Continue work with power circuit.
• After design is tested and confirmed, place on
  PCB's and mount on fixed surface.

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Thank You. Questions?