DMX LED Flood
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
| 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.