My design for the lovely Motörbörd bird call generator. Generate the required energy with the rotation of the motor.
The Motörbörd is an idea of Christoph Haberer aka ChrisMicro. The 4069 circuit version is a development of Uwe Schüler. GitHub documentation:

Status: workshop kit, on request

Here is a bigger I wrote for cultural education methods about the Motörbörd (in german language only).


Motörbörd print link