The circuit boardThe ε12 circuit board is made of high quality FR-4 glass epoxy, double-layer with plated-through holes as well as silkscreen and solder mask. The board dimensions are 2.125"x1.475" and the thickness is 0.062".
ε12 v2 boardThe following shows photos of the top and bottom sides.
The circuit board layout is shown below. It is not in actual size. The top layer is shown in red, the bottom layer is in blue, areas where there are traces in both the top and bottom layers are in violet, and the top silkscreen is in light grey.
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