This is for a learning/hobby building project to do precise temperature control in my 3D printed enclosure, while also using the (waste) heat to dry filament storage above.

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The project was elaborate as I did all the different elements myself :

• Setup project administration and PID.

• Design the solution Conceptual, Functional and Technical designs.

• Design all the 3D elements and 3D print or CNC them.

• Design electronics and CNC my own pcb.

• Design software requirements and build it in C++

• Combine everything together and test and document improvements.

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The setup I'm building uses just cheap continues rotating servo's and does end stop recognition by sensing changing current draw if servo is stalling.

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Links :

PrusaPrinters : https://www.prusaprinters.org/prints/5122-servo-automated-iris-aperture-for-air-flow-control

Thingiverse : https://www.thingiverse.com/thing:3563742