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And when it comes to component placement, this seems like the most arcane art to me! :D

Below is the reference circuit for driving a Waveshare e-ink display – are there components for which it is important to actually place them close to each other on the PC? L1 and C4, for example? Are there rules of thumb here?

Is it possible/customary to place a via directly inside a solder pad? Seems like it would save some space, but maybe it's a bad idea?

#electronics