Simple FEATHER wing?

Antti Lukats

I2C, RX/TX, SCK,MISO,MOSI - map 1:1, but to where connect SPI select on feather? or have lots of solder jumpers?

This adapter if done "full passive" would be really easy to-do, and it would allow also some very nice things when used with Greg's coming ECP5 feather!

Actually the HS connector could also be fitted, but then a bit more issues (open questions) arise so maybe this passive adapter is good for the first Feather adapter.

Q: what todo with unused feather IO ? and unused PCB space? some proto area?

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