Small, offline, cross-platform configuration tool for ATK / VXE magnetic-switch keyboards — a reviewable replacement for the official web app at hub.atk.pro, built by reverse-engineering its HID protocol.

• No cloud, no server, no browser. Talks to the keyboard's HID interface directly. Zero network code.
• Settings normally apply to RAM. storage save can commit them to flash.
• Linux / macOS / Windows, single binary (Rust + hidapi).
• i18n: English, Korean, Japanese, Chinese (--lang en|ko|ja|zh|auto).

⚠️ It might not work for you. Only the ATK68 (1a81:207e, firmware 1.25) is hardware-verified. Other models share the same controller and should work, but are untested. There is no warranty — use at your own risk. Settings apply to RAM and revert when you replug, so mistakes are recoverable.

cargo build --release          # -> target/release/atk68

On a clean Linux box you may need libudev/systemd dev headers and pkg-config. macOS/Windows: just the Rust toolchain.

One-shot Linux install (binary + udev rule):

./packaging/install.sh

Cross builds (install the target first with rustup target add):

cargo build --release --target x86_64-pc-windows-gnu
cargo build --release --target aarch64-apple-darwin

atk68 list                              # find attached keyboards
atk68 info                              # model + firmware version
atk68 status                            # snapshot of all decoded settings
atk68 light                             # show RGB lighting
atk68 light --color "#00ff00" --brightness 6
atk68 light --effect 5 --color "#ff0000"   # reactive (key-press) effect
atk68 light --off
atk68 actuation --point 1.2 --down 0.3 --up 0.3   # actuation + rapid trigger (mm)
atk68 rate --hz 8000                    # USB polling rate
atk68 tweak --set winlock=on --set rt=on   # toggles
atk68 profile 1                         # switch active profile
atk68 keyrt 0 1 5                       # per-key rapid trigger (row col value)
atk68 export ~/.atk68.conf              # save settings to a local file
atk68 apply  ~/.atk68.conf              # restore them in one shot
atk68 storage save                       # commit current RAM settings to flash
atk68 storage reset --yes                # factory-reset saved settings
atk68 raw "45 00 00"                    # debug: send cmd+body, dump reply

Normal changes apply to RAM and revert on replug; use storage save to persist them. --lang works on every command, e.g. atk68 status --lang ko.

Profiles can also include toggles, for example tweak.rt = on and tweak.low-latency = on. export writes all supported tweak values.

Keep a local profile and re-apply it offline whenever the keyboard's saved settings get wiped or an effect glitches:

atk68 export ~/.atk68.conf       # once, when settings are how you like them
atk68 apply  ~/.atk68.conf       # any time you need them back

It's a small editable text file. Put atk68 apply ~/.atk68.conf in your login startup to re-apply automatically on boot.

macOS and Windows need nothing. On Linux, a normal user can only open the keyboard's vendor hidraw node with some one-time privilege — this is the kernel's security model and cannot be bypassed in code. You do not need a udev rule, though; pick whichever you prefer (all one-time):

# A) No udev rule: grant the binary the capability to open the node.
sudo setcap cap_dac_override+ep ./target/release/atk68

# B) No rule, no setcap: just run it elevated.
sudo ./target/release/atk68 status

# C) A udev rule (then no sudo/setcap ever) — see packaging/60-atk68.rules:
sudo cp packaging/60-atk68.rules /etc/udev/rules.d/
sudo udevadm control --reload && sudo udevadm trigger

If the device is found but can't be opened, the tool prints these options.

Drives ATK/VXE magnetic-switch keyboards using the gtech controller (ATK68 family). It recognises a list of models for a friendly name and correct mm scaling (device::MODELS); other keyboards on a known vendor id + vendor usage page still work with defaults.

storage save sends SaveStorage (0x21) and commits the current RAM settings. Flash has limited write cycles, so use it only when needed. storage reset --yes sends ResetStorage (0x22). Firmware flashing remains excluded.

• ✅ Discovery + model table, info, status, RGB (incl. reactive), global actuation + rapid trigger, per-key rapid trigger, polling rate, toggles (winlock/wasd/mac/rt/…), profile switch, profile export/apply, i18n (en/ko/ja/zh).
• ⬜ Full key remap, per-key actuation, DKS / macros / SOCD — opcodes are mapped and reachable via raw; see PROTOCOL.md and HACKING.md to add them.

PROTOCOL.md — framing, opcode map, verified encodings. HACKING.md — step-by-step guide to add the remaining features.

MIT — see LICENSE. Not affiliated with or endorsed by ATK / VXE.