This is a motorized version of this incredible thing: https://www.thingiverse.com/thing:4459702

I made it fully automatic with MG90S servo (SG90 variant withh all-metal gears) and ESP32 microcontroller, but You can use Arduino or really any microcontroller. Even servo tester works in a sweep mode! I will post a code example later, but a simple sweep example with added button or switch control will work just fine.

As for the assembly, follow the instruction on a source thing, but use my base and gear base. Then fixate servo adapter instead of rocker arms (I added a nut as a spacer), put servo in its frame, connect the servo to the adapter and bolt in a servo frame (Or just glue it in place). Put controller compartment in the back, wire it up and give it a try, it might need some fixing afterwards. Glue the button in and close the lid.

I made it possible for multiple girls to dance alongside each other. You can connect multiple servos to the controller, print multiple assemblies and connect them with simple M3 bolts from each side (Holes are pre-made). Be sure to remix this thing (Or rather the source thing) if you make a custom head or dress! (I'd gladly do so myself, but my skills are lacking)

WHAT YOU NEED TO BUILD IT:

1. MG90S/SG90 Servo
2. Microcontroller or a servo tester
3. 4 M3 bolts with nuts
4. 2 mm shafts (I found 1.5 mm nails working just fine)
5. An external button (Optional)

I am planning on adding music using I2C and a little speaker, so stay tuned!

P.S. Don't mind my messy build and a different servo adapter that I'm using, it's a previous version but it's already glued together, so i decided not to update it to a new adapter version.