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TimD Newbie Joined: 23/02/2021 Location: United Kingdom Posts: 32	Posted: 02:58pm 28 Nov 2022       A potentiometer is nice idea, especially since the cursor is travelling a line of letters with stops at each end - so turn it fully left and it's at 'A', turn it fully right and it's at 'Z' - there's no wrap-around to contend with.  You'd just have to ensure that it's linear rather than logarithmic, otherwise you'd need some extra maths in the code to keep the spread of the letters equally spaced around the travel of the potentiometer! Kind regards, Tim.