Many thanks to otvinta3d for providing this great mechanism!
It all works very well (!) but I like it better when the power supply can also also be integrated into the object. Therefore I decided to rebuild this part accordingly. That means the integration of a battery compartment, an on/off switch and a power socket. It seemed most useful to me to integrate a place for a 9V battery.
Here you can see the result in work: https://youtu.be/2CcygsiQ8xQ
These are the stl files with the changes:
Diff_batt_cover_seabird.stl comes very tightly dimensioned from the printer. This is intentional, as a well-fitting part would soon no longer hold. Here you might have to file or sand a little.
All parts can be printed without support.
All other required stl files are unchanged: https://www.thingiverse.com/thing:2116304
I used the following components:
Mini DC 6/12V 50/200/300 rpm Micro Gear Motor
AC 125 V 6A ON-ON 3 Pins 2 Position Mini Toggle Switch
2,1 x 5,5mm 3-pole DC socket connector, pin 2,1mm
Prusa, ICE PLA
Galaxy Black, Romantic Red, Young Yellow
The black and grey parts are printed with Prusa, the red and yellow parts with Flashforge Finder.