open-source

MAX3421E USB Host FeatherWing

Let a separate microcontroller talk to low- and full-speed USB devices through an SPI-connected host controller.

Remix this board → View source on GitHub ↗

License: CC BY-SA 3.0
Source revision: rev A
Last mirror: Sep 10, 2026
Git commit: 7011deb53161

About MAX3421E USB Host FeatherWing

Let a separate microcontroller talk to low- and full-speed USB devices through an SPI-connected host controller. Original two-layer design for adaptation to ViaGrid; rerouting and testing are required.

Published design files

Development & tools · two copper layers
Open source (CC BY-SA 3.0) · Limor Fried / Adafruit Industries
Mirrored at 7011deb53161

Canonical source stays in the upstream git repository (and in WalGit after a successful mirror push). Generated renders and 3D models use artifacts/viagrid/usb-host-featherwing/7011deb5316121374db87580ad3b03f22d8f676d/500cf4b804b43b07 on the artifact CDN and are not checked into git.