Complete frame for TinyTina drone - OpenSCAD parametric - reinforced prop guards

Last edit: 2019/10/07. Uploaded V3 for the top body with improved OpenSCAD code. This fixes the previous mesh errors in the exported .stl, and allows correct slicing with the new Prusa Slicer 2.1

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2019/06/18. V2.3. Added an OpenSCAD version of the lower frame and a landing gear design, meant to be screwed under the four motors. You will need eight M2 x 6mm screws (Allen head). See the pictures.

For more info please open the OpenSCAD source files (with OpenS