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Grow LED Array Prototype Rev. 2
Button pinouts were mirrored. Both switch channels of the button were used in order to reduce single element through current. Single-sided routing was dropped in order to pass DRC at 20mil. No benefits of single sided besides challenge, as most fab houses do not seem to care. The higher resolution boards were difficult to toner etch properly with my level of skill. The lower resolution will allow for easier etching and milling with tools at hand. A pair of arrays will be made in each method, in order to compare milled and etched PCB technologies. Some LED pins must be soldered top side due to lack of through hole plating.
Posted by rmrubin 
March 2008