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16.7 Million Color L E D Light Fixture. Jeffrey Knorr Christopher Yope. Project Definition.

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16 7 million color l e d light fixture

16.7 Million ColorLEDLight Fixture

Jeffrey Knorr

Christopher Yope


Project definition
Project Definition

Using very high output light emitting diodes (LED) and the United States Institute for Theatre Technology DMX512 control protocol, a 16.7 million color LED light fixture will be created and interfaced with a NSI MC6300 lighting controller.





Dmx512 protocol
DMX512 Protocol

DMX-512 Data Frame Format

DMX-512 Data Frame Format (two stop bits)



Sensor selection
Sensor Selection

  • Microchip TC1047A

  • Vin between 2.5V and 5.5V

  • 10mV per °C Voltage Slope Output

  • ±0.5 °C Accuracy

  • Low Running Current – Minimizes Self-Heating and More Accurate Result

  • Small Size for Better Placement


Sensor use
Sensor Use

  • Total of 4 Sensors

  • One for each color –Red, Green, Blue

  • One for Ambient Temperature

    • Needed to ensure that the LED’s do not overheat


Led selection
LED Selection

  • LumiLEDs Luxeon Star and Star V LEDs

  • State of the art LEDs

  • LEDs require heatsinking to prevent overheating and to help maintain a low pn junction temperature


Microcontroller selection
Microcontroller Selection

  • PICs are widely used in industry due to their low cost and relatively simple instruction set

  • 18F458 features: Programmable Serial Interface, 4 PWM outputs, 10bit ADC, large internal memory (32kb Flash, 1.5kb RAM)

  • Dual Inline Package

  • Low Cost

  • Simple System Integration


Work completed
Work Completed

  • Microcontroller Acquired

  • LED’s Acquired

  • Temperature Sensor Acquired

  • LED Testing

  • Initial Dimming Circuit Design

  • Power Supplies Acquired

  • Initial Webpage Design


Worked to be completed
Worked to be Completed

  • Sensor Testing

  • PIC Programming

  • Finalize Dimming Circuit

  • Website

  • Construction

  • Project Testing

  • Report

  • Demonstration


Test plan
Test Plan

  • Test each subsystem individually

  • Gradually combine subsystems and perform intermediate system tests

  • Initial full system tests

  • System Burn In (& temperature testing)

  • Final thorough system testing




Finish
Finish

  • Questions?

  • Comments?

  • Suggestions?


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