Please Tell Me Where to Plug This In

[scenic tiger]

Hi all,
First-timer to this Discord, apologies if I'm posting wrong.
I inherited a couple of what seem to be Voron 2.4 printers from my sister and I'm trying to get one of them running.
There's a wire labeled "SB RCB" hanging loose underneath the printer. I'm thinking my sister might have made a typo and it's supposed to say "RGB" because I see some LED strips mounted around the frame. Unfortunately, my Ouija board isn't working at the moment so I can't get a definitive answer out of her.
Does the typo theory seem right to y'all? Can you see an obvious place on the circuit board where I can/should plug this in? I don't want to start just plugging it in at random, my girlfriend would be very upset with me if I set her condo on fire.

Thanks in advance!

Another connector photo in case that helps.

[idle bough]

if they are in fact rgb leds (trace the wires to see where they connect to), the red 3 pin header is the rgb port

check the pinout for the pins for the socket

[scenic tiger]

Ooh, thanks for the pinout, that's huge.

I found a wire labeled "LED STRIP" that seems to trace to what it says it does. It seems to be plugged into Fan5 though, which is interesting. SB RCB looks like it goes into a big bundle of wires that all feed into the conduit(?) that ultimately connects to the print head.

[willow rock]

“Sb rgb” (accepting your guess as to the typo) would be “stealthburner rgb” aka, neopixels in the toolhead itself

OTOH, the chamber lights are probably just “dumb” white LEDs, rather than neopixels, hence the fan port

[scenic tiger]

That seems right. It looks like the toolhead might be a stealthburner, and I can't see any indication that the chamber lights are RGB. I've already flashed new firmware to the Octopus (which, in retrospect, I probably shouldn't have) which might explain why the chamber lights aren't coming on.

Thanks for the help!

[willow rock]

do you have a config file from before, or...?

(in the stock files, I think the chamber lights start commented out since not everybody has them)

[scenic tiger]

No I did a fresh install following a guide online. I preserved the Raspberry Pi OS but didn't think to / know I could pull the firmware off of the Octopus.

Made a lot of work for myself since I'm going to have to reverse engineer the firmware by trial-and-erroring different component settings in the code. She didn't leave a build list anywhere I can find.

[willow rock]

it's too late now, but I didn't say firmware because I didn't mean firmware

klipper works a little differently than other systems (marlin) that you may have worked with in the past

essentially nothing is baked into the compiled firmware

everything is configured live in the printer.cfg

so backing up firmware off the octopus? pointless