I'm currently designing a circuit using Alpha RV141F-40-20BL-B50K Potentiometers which feature a clear shift into which a 3mm LED can be inserted.
My initial plan was to just fit a WS2812B underneath each chip for simple RGB addressing of each potentiometer. Unfortunately, there is only a 0.9mm gap underneath the pot, which won't fit the 1.6mm 5050 package. Additionally, I am worried about light leaking from one pot to another if the led is not properly inserted into the shaft.
My second approach was to use an external driver (e.g. TLC5940) and a 3mm RGB led until I realised that "real" 3mm RGB LEDs don't exist.
Does anybody know about an equivalent of a 3mm led as an smd package, any other widely available clear shaft potentiometers or does anybody have any other thoughts/ideas regarding the problem?