Keyboardio Atreus Firmaware

My Keyboardio Atreus firmware. Based on the standard US layout, with some additional modifications to add German language keys.

Depends on

• Kaleidoscope
• arduino-cli

Build/Flash firmware

• Make sure Kaleidoscope is checked out and the KALEIDOSCOPE_DIR environment variable is set (see Kaleidoscope readme).
• make compile to build
• make flash to flash

Usage

Set the keyboard layout to us altgr-intl, e.g. on Arch Linux:

localectl set-x11-keymap us altgr-intl

The firmware is based on the default firmware and adds a second UPPER_1 layer, accessible by tapping the Esc key from the first UPPER_0 layer. It provides the following Key bindings:

• A -> ä (single tap); Ä (double tap)
• U -> ü (single tap); Ü (double tap)
• O -> ö (single tap); Ö (double tap)
• S -> ß (single tap); § (double tap)
• E -> € (single tap); é (double tap)
• See the keyboard layout SVG for more.

When in one of the UPPER layers, the Fn key switches down a layer, and back to the default layer when in UPPER_0 and the Esc key switches up a layer, and back to the default layer when in the UPPER_1 layer.