Poka yoke design

When designing the Sofle Pico, an effort was made to ‘poka-yoke’ the design, that is, to make the design as ‘fool proof’ as possible to assemble.

Specifically, clear markings/symbols and selective masking of footprint through-holes are used to ensure that components are soldered to the correct side & in the correct orientation. Outlines indicate the side the component should be inserted into. The side with the outlines has footprint through-holes masked, so that if the user inserted the component from the wrong side, it would not be solderabe.

Please open an issue if you have a suggestion for improving the poka-yoke. I’d like to move away from English language notes on the PCB, and replace them with universal pictograms.