Framework Expansion Cards: Expansion Card microcontroller
Made by Framework Computer.
Source: https://github.com/FrameworkComputer/ExpansionCards, commit 2904a95d60d4ba771c5c3c56d6fdba7078243fe8
License: CC-BY-4.0
Credit: Expansion Cards (c) 2021 Framework Computer Inc, CC BY 4.0. Source: https://github.com/FrameworkComputer/ExpansionCards

Design file: Microcontroller.kicad_pcb (KiCad, kicad_pcb version 20171130). The makers' own file, unmodified.
Schematic: Microcontroller.pdf; Expansion_Card.pdf.
License texts in this folder: LICENSE.

This design file is licensed by its makers under the license named above, separately from Boardr. You may copy, share and adapt it under that license.