MADRIX Forum

Hi there,

i`m a newbie and trying to build LED meteor tubes by myself. I have a few WS2812b stripes (each 4mtr. with 240 single addressable LEDs) and i want to to have a few tubes with about 20 pixels. I planned to stick the LEDs on a aluminum plate and then i realized that every pixel/led is addressed and i want to have a double sided (360 degree) tube. If i stick the LEDs like on the stripe, for example the drop effect runs on one side down and on the other side up.
Is there a possibility to run the front and backside in parallel?

I tried to build an own fixture and put the backside pixel/voxels on the front side in the editor: not working. I tried to create an own patch with single LEDs, putting the front and backside LEDs/pixels on the same place (allow overlay): not working. Putting the backside in next Z-level, flipping the orientation and so on: not working..

Maybe i can`t see the wood for the trees? Any suggestion or help is welcome!

All other things are working, LED stripe is running all the effects. My technical p-o-c setup is: 1 WS2812b stripe, 5V DC 12 A power supply, Artnet SPI controller from deskontrol via Ethernet/artNet, Win 8.1 with latest Madrix 3.

Hello Daniel07,
Welcome to the MADRIX forum.
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It is possible to create MADRIX effects where the LEDs with different addresses are running in parallel.
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You can do this in two different ways in MADRIX. The first way is to create a Patch with overlapping fixtures. The second way is to patch the pixels side by side and use the "Map function" for each effect.

In your case I would recommend the first way.
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For example you want to create a tube with 20 pixels on each side. Pixel 1 - 20 are located from top to bottom on the front side and pixel 21 - 40 are located from bottom to top on the back side.
Now go to "Preferences > Patch" in MADRIX and create a "New" patch.
At first we want to add the pixels 1 - 20 on position X:1 and Y: 1 and in the Addressing section we change: "Start Corner": Top Left and "Main Orientation": Vertical. The "Start Channel" and "Start Universe" should be 1 in this example
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In the next step we enable "Overlap" and then we add pixel 21 - 40 on position X: 1 and Y: 1 but we have to change the settings in the Addressing section. Now we change "Start Corner": Bottom Left and "Main Orientation": Vertical.
Please change the "Start Channel" to 61.
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Now we have added the pixels for the front and the back side on the same place in the Patch and you will see the LEDs are working in parallel.
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If you have any further questions, please do not hesitate to contact us again!
Thank you.

Hello Guertler,

i followed your recommendation and took gate 1. And yeah, bright lights are shining: It works, the pixels are running in parallel mode!

Thank you very much!