can you guys indicate me a 12V type of led strip that works with the wpilib led controller, and if it doesnt exists one that is controlable with wpi, is there a çibrary that can do that ?
Is there a particular reason you want 12V instead of 5V? The key search term for compatible addressable LEDs is WS2812B (5V) or WS2811 (12V). In general I think 5V ones are more common?
it is because i dont have a 5v converter capable enough to deliver high current, and i am trying to find one that can be feed directly with the PDH
Basically all addressable LED strips I’ve seen require regulated voltage (maybe not well regulated, but they don’t often specify how well regulated they need to be). Supplying them directly with battery voltage (ranges from 7V - 13V with a lot of noise) may burn them out.
If you plug a 12V (WS2811) strip directly into the PDH it will not be good. You can buy a 5V buck converter off of amazon for under $10, and I’ve found ones that can handle up to 10A which was plenty for the 16 feet of LED’s on our robot last year. WS2812 and a 5V buck converter is the way to go.
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In 2018 we simultaneously ran two 170 LED Pac-man displays on our robot (one is in my avatar). The LEDs were WS2812B strips and our 5V, 3A power supply had no problems driving it, but we never went above 50% brightness because it just wasn’t necessary.
And even if not damaged, they’re likely to misbehave - a 4-6V swing in voltage is going to produce significant visible brightness variations.
How many LEDs (or how long a length of strip) are you trying to drive? While the nominal requirement is 50mA/LED, in practice they usually draw quite a bit less than that. The worst case is bright white, meaning all 3 of R,G,B are fully on, and most robots don’t show bright white all that much.
We used a Voltage Regulator Module from CTRE last year. Worked well, something we already had, and I love LEDs.
because we live in Brazil, importation of a product like this is out of question (52 dollars of importation taxes),
i dont like this idea because of the max current of the VRM, but i think that this is the only option
We have used these led strips for a few years now and have not had any problems with them. They work great and are bright enough at 50-60% to see at a comp that is very well lit.
https://www.amazon.com/dp/B07L3M4WQX/ref=twister_B095W864ZD?_encoding=UTF8&psc=1
we’ve used these, 5m for $24, works fine, I don’t think we did anything clever with voltage regulation.
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