It was made just for fun, feel free to remix.

I was using screws from old laptop + some m3 brass 3*4.2*5 nuts with m3*25/m3*8/m3*12 bolts.

I was using PETG filament with 5 perimeters and 50 infill

You need:

1. MG90 servo
2. Arduino Nano 168/328
3. SPDT switch
4. SPDT micro switch
5. 9F22 battery 9V
6. 470uF * 16V capacitor

Import libraries from zip to Arduino IDE