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Oh my - imagine if you found a cheap motor, gears and battery box so it twiddled automatically ... ( tapbot was mostly genuine Lego except the power )

I wouldn’t know where to begin with that! You are far more clever with that stuff than I am :)

Depends on space and chosen motor. Put an 8 tooth on the motor and a 40 tooth on the twiddle bit and it's 5x slower than the motor. if that's still a bit fast then it gets complicated

^^ I wanted to turn 380 spins a minute down to 15 - once in 4 seconds, and got it to 15.2 rpm I'm also trying to figure a clock gearing, but how to get the minute hand turning faster than the hour hand on the same axle ( or at least looks like it ) ??

#grahamthetechguy :)