if my old 64 walnut works on my norns i reckon your 128 grayscale will be pretty good!
there are a bunch of things in apps that still run and the app just pretends the other 64 keys are there. for instance when i run Glut the rows and columns light up as i play back samples, but the sample spreads across the presumed 16 columns. doesn’t bother me. I sometimes tend to just double the sample length so I get one on the grid. so you won’t need to do that haha

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