danjovicI've designed two versions of the board. One is specific for NES/SNES controllers and uses an ATTiny85. This version has two PCB variants, one using SMD components and another (single sided) using PTH components.
The other version uses an ATMega*8 (8/88/168/328) and it is designed to allow several types of controllers to be connected.
Schematics
The schematics for both versions are shown below. All files are available for download.
Discussions
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