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DMX connection

Started by trikidiki, September 07, 2019, 10:15:13 AM

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trikidiki

Hi

I hope this is posted in the right place.

I am awaiting delivery of an F8-B and have two Moving Head Spot Lights. I was considering how to connect them and wonder if there are any pros or cons or simply ways that won't work. 

1) Connect one Moving Head to one of the RJ45 connectors on the F8, then slave the second Moving Head from the first.

2) Connect each Moving Head to a separate RJ45 on the F8. I am not in immediate need for any pixel expansion but realise this may limit me in the future.

3) Connect one cable to an RJ45 then split that cable to feed the two lights. I assume I will have to terminate the DMX output on both moving Heads.

I do not have a permanent display location so the things I am trying are more 'proof of concept' or 'proof of my ability'. I obviously want to keep costs down but don't want to find next year (when hopefully I have a fixed site) that I am having to re-cable everything. 
The F8 is also intended to run a 16 x 50 pixel tree. Other bits and pieces will be run from ESPixelsticks, and I have a couple of LED panel arrays.

I believe I read the cable limit is 30ft. Nearest metric equivalent is 10m. As this is at the limit of the range is this likely to introduce errors, so would I be better off running a shorter cable.

Any other tips for a beginner will be gratefully received.

As a side note, there doesn't appear to be much discussion surrounding ESPixelSticks which surprises me given the flexibility they seem to offer and the low cost. Any driving reason for this that I'm missing.

ihbar

Hello

I can comment for the dmx part :
If it is dmx output, the length can be longer. I have not tested with F8-B, but a dmx line should be able to reach reliably more than 100 meters. (using appropriate dmx cable).
Option 1 is the recommended dmx scheme.
Option 2 will limit you in future.
Option 3 is not a valid configuration: There should only one termination on a dmx line. Practically, if lines are not long, it may work. But is is safer to use an active splitter if you want to distribute signal.


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