photonik adaptronik fraunhofer darmstadt openadaptronik forschung bmbf opensource open source maker makerfair lbf science lego tudarmstadt physics engineering optische systeme germany sensoren fablab 3d-printing 3d-druck lasercutter aktoren simulation franuhofer bachelorthesis cad computeraideddesign mechatronische_systeme development-tools dämpfung makeathon openadaptronik fraunhofer
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