LED Intelligent Lighting System Final Presentation November 28, 2007

Team Members Jeff Pike Responsibilities: Team Leader, DMX Communication, LED Implementation, Research, and Documentation Major: Electrical Engineering Ryan Foret Responsibilities: Power Supply, DMX Communication, Research, and Documentation Major: Electrical Engineering Matt Ladner Responsibilities: LED Implementation, Motor Implementation, Website, Research, and Documentation Major: Electrical Engineering Jeremy Scruggs Responsibilities: Power Supply, LED Implementation, Motor Implementation, Research, and Documentation Major: Electrical Engineering

Overview  Introduction  Problem and Solution  Technical and Practical Constraints  Prototype Design  Testing Subsystems  Future Additions  Summary  Questions and Answers

Introduction Controller (Hardware/Software) Lights (Move, Change Colors) What is a Lighting System? AmateursProfessionals Hardware Controller Software Controller Stationary Lights Automated Lights

Introduction Computer Software USB to DMX Interface Intelligent Lighting Fixture *NOTE -- DMX-512 Protocol is the industry standard communication for intelligent lighting systems

Problem Current Professional Lighting Systems Positives :  Create dynamic, multicolored shows  Lights move very quickly  User can program entire shows Negatives :  Very expensive (software and light fixtures)  Consume a lot of power  Heavy and bulky  Use incandescent bulbs which are fragile

Solution LED Intelligent Lighting System Positives :  Creates dynamic, multicolored shows  Lights move quickly  User can program entire shows  Uses durable LEDs  Requires much less power  Very competitive costs  Lightweight and compact

NameDescription LED Intelligent Lighting System technical design constraints, adapted from [1] Technical Constraints The product must be able to create 16+ million colors. The light fixture must be able to pan 360° and tilt 180°. The light must use less than 7.5 amps at 110/120 volts. The product must communicate using the DMX-512 protocol. The light must have 256 different levels of intensity from completely off to fully on. Color Variation Range of Motion Current Draw Compatibility Light Intensity

TypeNameDescription EconomicCostEach fixture must manufacture under $ Health and SafetySafetyThe light fixtures must operate in a non- hazardous manor. LED Intelligent Lighting System technical design constraints, adapted from [1] Practical Constraints

Prototype Design The LED Intelligent is divided into four major subsystems: Communication LED System Motor System Power Supply

Prototype Design

Uses DMX-512 (Industry Standard Protocol) Derivation of RS-485 communication Communication

DMX-512 Format Communication

Testing the Communication Communication

Lastly, to test the received/stored data is correct we used HyperTerminal. Communication

LED System Type of LED Used Lamina Titan RGB LED Draws 4.2 Amps Produces 16+ Million Colors TLC 5940 LED Driver Outputs 1920 mA to Both Red and Blue Diodes One Channel is Removed to Provide 1800 mA to Green Diode

LED System LED was Tested Visually Each Color’s Intensity was Matched by Varying its Voltage Level Code was Adjusted to Reduce Flicker

Approach-Power System Types of Power Supply Considered Wall Industries PSPW120 AC/DC Converter –Output Voltage of VAC –Output Current of 10 Amps –Input Current Draw of 2.5 Amps (RMS) Building Our Own AC/DC Converter

Motor System Motors used in the motion control Vexta Stepper Motor –~2.5 ft-lbs –.2 A / Phase Sure Step NEMA 23 Stepper Motor –17.25 ft-lbs –2.8 A / Phase Motor Drivers TI 5804 –Provides 1.5 Amps Sure Step Micro-stepping Drive –Provides 3.5 Amps output

Motor System Visual –Check for correct direction –Check for repeatability –Check for accuracy

Future Additions Implement an encoder for the motor –So that the motor doesn’t get lost Implement a power supply –Can be plugged directly to outlet Create a printed circuit board (PCB) Improve packaging appeal –For future marketing

Summary The LED Intelligent Light: Creates professional, multi- colored light shows. Affordable Durable and lightweight

References [1] M. Ladner, R. Foret, J. Pike, and J. Scruggs “LED Intelligent Lighting System Technical and Pratical Design Constraints," unpublished. [2] (3,Oct. 2007) handyboard.com. [Online] Available: [3] National Instruments. “Motor Fundamentals” in National Instruments Developer Zone, Oct. 3, [Online]. Available: [4] (4, Oct. 2007) donsbulbs.com. [Online] Available: [5] (26, Nov. 2007) automationdirect.com. [Online] Available: ystems/Motors_-z-_Cables/STP-MTR ystems/Motors_-z-_Cables/STP-MTR [6] (27, Nov. 2007) wallIndustries.com. [Online] Available: