DMX LED Flood

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Concept

The idea for the DMX LED floodlights was concieved after reading a thread on the PlanetChristmas forums about the problems with the MR16 LED bulbs that people are using with the Light-O-Rama or d-Light DC control boards. Having looked at some photos of the MR16s, they appear to be nothing but a few LED's and resistors that are soldered to a board.

The Project Concept is for a 3 x 4 or 4 x 4 PCB, containing Red, Green, Blue, White, and possibly Yellow LEDs. They would be of sufficient intensity to provide a flood of color, or a Strobe (RGB or Wh).

The board will be 4 or 5 chn DMX, base address will be set in the PIC (16F688)

Schematic

Schematic is currently in the drawing phase.

Layout

Layout is currently in the drawing phase.

BOM

BOM is largely undecided. Parts are added here as decisisons are made. This is subject (and will) likely change until a final specification is reached.

579-PIC16F688-I/P 1
571-5564161 2
595-SN75176BP 1

Construction Notes

There are two ways that the LED's can be installed. For use with the DMX controller, the LED's will be installed in sink mode (where the ground connection is turned on / off.) For use with a LOR or a d-Light controller, the LED's will be installed in switching mode (where the + connection is turned on / off.)

DMX Values

DEFAULT DMX VALUES and FUNCTIONS
Channel DMX Value
1 Shutter - Strobe - Dimmer 000 - 001 Blackout
002 - 127 Strobe: Slow > Fast
128 - 255 Intensity: 0% > 100%
2 Red 128 - 255 Intensity: 0% > 100%
3 Green 128 - 255 Intensity: 0% > 100%
4 Blue 128 - 255 Intensity: 0% > 100%
5 White 128 - 255 Intensity: 0% > 100%

Revision History

   12/29/2007 - Initial Schematic / Layouts started.