I think I’ve convinced myself that my Hot Dox kit could benefit from a little RGB underlight strip on the right-hand board, to help indicate active layer.
I’m comfortable with code and soldering in general, but the details of this kind of mod are new ground for me. It seems like the first step is to find out whether the ATMEGA32U4 controller has an unused data pin here (and if there’s a place on this board where I can tap into it). In the keyboards/hotdox directory of the qmk repo I can see that the B7 pin is used for backlighting but that’s the only pin info I see in there at a glance.
Is there a place I can find this info for the Hot Dox? Or pointers toward info on the process for figuring it out. Thanks!