Review on Optimized Uxcell Rotary Encoder Button Components by Chef Buntiloy

I have these to add a rotary encoder + switch to a slot on a mechanical keyboard (specifically the Drop/OLKB Planck keyboard). They work great programming my board with QMK. Just make sure the encoder is set up correctly in QMK (mine initially moved twice as far as it should rotate for a click). The good thing about them is that they're relatively short, so they don't stick out too far above the rest of the keycaps. I ended up 3D printing a pen for myself, but it's a standard size so finding the right pen should be easy.