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Replying to @JohnKennedyMSFT and @tindie

Thanks! So, the E-Book Wing is simpler to build, but has no microcontroller on board; it needs a device like a Feather M4 plugged into the headers to work. Open Book: more complex to build, but has a SAMD51 on board; it works more like a PyBadge with headers free for other wings.

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