I have tried to keep the circuit compact.
I am relative beginner with KiCAD. I have redrawn the HelloBoard. The major difficulty is with the libraries creation: I managed to create my own modules (for the push button, for connectors, for the quartz), but in the end, I can only have one library. So all the modules end in one unique library...
Here is the snapshot :
I have tried to keep the circuit compact.
I had the opportunity to try to mill it on a Roland SRM-20 (in the UTC FabLab in Compiegne, France).
They had only conical tools. I have considerably improved the aspect of the board using a smaller "path error" parameter: by default it is 1.1 pixel, I reduced down to 0.5 pixel. I do not really understand why. The PNG file resolution is 600 dpi. Example of comparison below (all other parameters are identical).
Unfortunately, even I found nice tuning, the edges cut was insatisfactory.
Then back in FabLab Digiscope, I tried again with the Roland MDX-40. The result was even worse: will cutting the edge, the Vcc trace surrounding half the board was milled...
Being lazy, I decided to slightly increase the size of the board (2mm): the final result is this :.
Here is the final KiCAD file.
I then realized KiCAD I do not need to convert the exported files from KiCAD into PNG: the Fabmodules accept directly SVG format. The resolution can be arbitrarily changed!
Again, playing a little bit with resolution and pixel error:
The new parameters lead to a wonderful result:
