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Pixcon16 fuse question


SeeFromSpace

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Greetings,

just designing a new Bethlehem RGB star prop. This is my first try at doing RGB. I have done LOR AC shows for the past couple of years. I have a pixcon16 controller which I have not used as yet. I want to use a number of hi count LED strip lights. I have been looking at ws2812B 5V strip lights with a count of 96 LED's per meter. The longest leg on my star would take 136 LED's. I calculated the wattage for 136 LED's at 40.8 watts or 8.16 amps. Of course the pixcon16 is fused at 4 amps per port. My question is - do I have to break the 136 LED's to  a couple of pixel ports or will power injection at one or two points along the strip  reduce the load on that pixcon16 4 amp fuse?

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Any certain reason for using 5 volt over a 12 volt strip ??

5V x 4A = 20 watts <or> 12V x 4A = 48 watts

Edited by KYHI
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I thought that the ws2812b strip was only available at 5v. I know that the ws2811 strips are available at 12 v but are often controlled in three LED groups. So would love to hear if the ws2812b strips are available in 12v

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2 hours ago, SeeFromSpace said:

I thought that the ws2812b strip was only available at 5v. I know that the ws2811 strips are available at 12 v but are often controlled in three LED groups. So would love to hear if the ws2812b strips are available in 12v

ws2813b will be the 12v version. I have some 13's that are 12v however the same mfg i have has an upgrade its ws2811 15 (didnt look right when I put all of the 1's together)

Rechecked my numbers with a magnifier, mine are 15's as well. Not 13's. Was going to use them on some small versions of singing faces but i found 5mm nodes instead.

JR

Edited by dibblejr
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And you say a ws2813 will operate on a pixcon 16? My understanding is that the ws2813 has two data lines that make it able to bypass a burnout pixel. If you can use a ws2813 on a pixcon16 how do you wire it. Thanks

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https://www.seeedstudio.com/blog/2019/02/14/ws2812b-vs-ws2813-addressable-rgb-led-strips-how-are-they-different/

the WS2815 are the 12 volt version - has 2 data lines - 1 of them is a Backup

Would assume you would connect both Data inputs to the same controller terminal..

https://www.amazon.com/BTF-LIGHTING-Upgraded-Individually-Addressable-Waterproof/dp/B07LG54F4W?ref_=ast_sto_dp

150 LED Strip Wattage Test Results.jpg

Edited by KYHI
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The WS2815 does have two data lines, but they are labeled data IN and data OUT. Not sure if that means they are somehow duplicate. Also there is a different refresh rate between the WS2812 and WS2813/WS2815. The true test is if someone out there is actually using WS2815 12v strips on a pixcon16. Or perhaps someone from the LOR company Genius Bar could chime in. 

But still interested in my original question. If I end up using 5v strip pixels does power injection have any effect on the 4 amp fuse on a pixcon16?

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1 hour ago, SeeFromSpace said:

The WS2815 does have two data lines, but they are labeled data IN and data OUT. Not sure if that means they are somehow duplicate. Also there is a different refresh rate between the WS2812 and WS2813/WS2815. The true test is if someone out there is actually using WS2815 12v strips on a pixcon16. Or perhaps someone from the LOR company Genius Bar could chime in. 

But still interested in my original question. If I end up using 5v strip pixels does power injection have any effect on the 4 amp fuse on a pixcon16?

If you add an inline fuse from the PI psu you should be fine. The PI fuse will blow before a surge gets back to the controller fuse.

JR

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Hey thanks for the info! Had no idea these virtual classes existed. Now I’ve  got to figure out how to use zoom!

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