Questions on Speed and note timing: I'm installing the music box (connected to a 28ybg-48 stepper motor via ULN3003 Driver and Arduino NANO processor) in a very small box enclosure with no external slot. The paper tape will be a small loop. I'm using direct connection to the crankshaft, the ,max speed is approx 1 rev/2 seconds. So I have a problem with timing, as the tape moves too slow, Because the motorized music box will be installed in a small, sealed enclosure, I want to use a short, looped tape.
I have a 3d printer and successfully created gears, so I could add to the music-box mechanism to change the ratio, but this will affect torque since the stepper unit is already at a 64-1 gear ratio. So instead of adjusting speed & power of the rollers with a modified gear-train, I'm experimenting changing note timing by adjusting space /density of the punches. I punched music so a whole note is a half column on the the paper strip. Problem is, not all the notes are playing. Is this due to cog spacing, and they can not realign to the denser data?