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RDM General Implementation Discussion General Discussion and questions relating to implementing RDM in a product.

 
 
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Old December 16th, 2011   #1
WouterVerlinden
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Join Date: Dec 2011
Posts: 1
Default Pixelstring on RDM

Hi all,


assume following product:
- A string of RGB pixels, being RDM compatible
- The string can contain anything between 1 and 100 pixels
- The DMX Footprint can therefore be anywhere between 3 and 300 DMX channels.


What is the most appropriate way of implementing this?

A) Have unique Device Model ID for each possible string length / pixel quantity.
-> The leads to generating 100 different Device Model IDs, each with a static DMX512 footprint
-> The device will then change its Device Model ID when the amount of pixels is modified (by the user)


B) Have a single Device Model ID for all possible string lengths / pixel quantities, and use DMX512 footprint according to string length.
-> This leads to the situation that (for example) device A of this Model ID reports a DMX152 footprint of 150 channels (as it has 50 pixels), whereas device B (with the same Model ID) report a DMX512 footprint of 300 channels (as it has 100 pixels).


C) Have a single Device Model ID for all possible string lengths / pixel quantities, and identify each pixel as sub-device.
-> This leads to the situation that (for example) device A of this Model ID reports that it has 50 sub-devices (as it has 50 pixels), whereas device B (with the same Model ID) reports that it has 100 sub-devices (as it has 100 pixels).


It it allowed for two devices with the same Device Model ID to:
B) Report different DMX512 footprint values
C) Report different Sub-Device Counts


Best Regards,

W
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