Split Flap Display with 16 Flaps and Minimal Additional Parts
thingiverse
This is a split flap display with 16 flaps and 3D printable numbers. The only things you additionally need are: A cheap 28BYJ-48 stepper motor and some short and long M3 bolts with hex nuts. And, if you want to control the motor, of course a microcontroller and a driver for the motor. If you want to make things easier, add a magnet with hall effect sensor. I provided a short assembly video with some details: https://www.youtube.com/watch?v=AOesbzHQ7VM Thanks to elefantman for providing the gear model :)
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