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adafruit-feather-m0-basic-board

Feather outline 50.8 × 22.86 mm with 2.54 mm corner radii, from Adafruit's Feather M0 Basic Proto board file (incl. its 0.508 mm micro-USB edge recess); holes Ø2.5 at the USB end, Ø2.54 at the far end; board drawn 1.6 mm thick: the maker does not print the thickness

Exact dimensions. True size, no printing tolerance added.

STEP STL free, CC BY 4.0 (credit "Xem Studio")

Dimensions

parameter	board
value	50.8 × 22.86 mm (2.0 × 0.9 in), corner radius 2.54 mm (0.1 in)

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From the full sheet

Adafruit Feather (standard form factor): every size, notes, mating features and sources. What is the Adafruit Feather form factor: board size and mounting holes?