NES controller on PC Engine / TurboGrafx 16

My brother needed a second controller for his PCEngine so we could co-op some shmups but original controllers are wildly expensive! And even if you find a cheaper option from another region, you'll need to buy yourself an adapter...ugh. So what I was design a circuit board to implant into an NES controller shell!

Easy as pie. This board supports either the cord for a PCengine or a turbografx and has broken out headers in case you want to install it into a different (larger) controller shell. This version does not support turbo buttons right now though.

Top Side:

Back Side:

Once I print some, I'll update with another post.