Comment on bypass controller on a cheap LED strip
litchralee@sh.itjust.works 10 months ago
My assumption with this PCB is that it switches the GND, meaning 12v is always provided to the LEDs. So the trick is to find somewhere that has a permanent GND and then connect all the LED leads to that. But I don’t see a large enough spot to land three new leads, except maybe where R6 is.
You’ll have to verify if my assumption is accurate, although I do wonder if you could just get a different PSU outright. This sounds like a 12v LED strip, so any sufficiently sized 12v wall-wart would also suffice. Can you also clarify: you want this strip to be always-on and all-white, but the strip uses RGB LEDs? While it does produce white, it might not have a very high CRI and thus may be unpleasant for certain lighting applications. There are dedicated white LED strips which will perform a bit better for color rendition, and that could potentially be an issue if food needs to look appetizing under these cabinets.
dingdongitsabear@lemmy.ml 10 months ago
it’s a RGB strip but with white LEDs.
Image
so when I bring 12 V to the 12 V lead and then GND to the R, G, or B contact, the respective LEDs light up. when I short them all (R+G+B) all the LEDs light up.
sure, I tried it with a known good 12 V PSU and it works, but I’d like to use this one and just bypass the light-show circuitry.
CameronDev@programming.dev 10 months ago
When you say all the LEDs light up, do you mean they light up white?
Those LEDs are labelled R G B, so I would have assumed they were single colour LEDs?
dingdongitsabear@lemmy.ml 10 months ago
they are white LEDs i.e. they shine white. the R G B leads are used to trigger them individually, for the running lights and whatnot. so when I bring 12 V to the V lead and GND to e.g. R, all the LEDs marked R (image) light up. when I then short R with G, then all R and G light up, etc.
CameronDev@programming.dev 10 months ago
Interesting, never heard of that arrangement before.