Thank you so much for responding! I understand more of how fixtures work thanks to your explanation. Unfortunately, I followed the steps and it didn't work. I do not know what I'm doing wrong. So here is exactly step by step what I am doing:
1. I have 4 LED RGB with 18 pixels each. Each of them have their own decoder and are daisy chained via DMX cable. All of them controlled by the Enttec ODE. All this is within ArtNet 0/Subnet 0/Universe 0
2. I open MM and set the Line Patterns Preset.
3. I add 1 fixture in Madlight. (for now, I am just trying 1 Fixture since I need one strip to work, even though I have 4 strips and 4 decoders)
4. I go to the Edit. (Here is where I believe I have to do the Custom Fixture Definition)
In Pixels W: I set 1
In Pixels H: I set 18
Pixel type sets to Custom
Pixel size: 3
I also tried to do a bunch of them and stack them on top of each other, but I didn't get the up and down either.
(By up and down, I mean the LEDs, in one single strip, start from the top pixel and down to the 18th pixel and vice versa)
When the Line Pattern preset is moving from left to right, the LED follows. But, when I rotate the line 90° (to go up and down), I get either a flash or the same thing as left to right.
Why I can get this!!!????
I've read this http://www.madmapper.com/controlling-le
... madmapper/ a bunch of times but....my brain....
Sorry, I know you guys are experts at this, but I just don't get it.
Thank you for your patience,