fizzctl

Control a Redragon K617 Fizz keyboard on Linux: solid colors, 22 firmware-native RGB effects, per-key painting, live animations, on-device key macros with a readable back, and Cfg.ini keymap restore — no vendor software required.

Install

# from PyPI
pip install fizzctl

# from PyPI (uv)
uv tool install fizzctl

# from source
git clone https://github.com/you/fizzctl.git && cd fizzctl
uv build && uv tool install .

Udev rules (needs one sudo)

fizzctl setup-udev

This installs 99-k617.rules to /etc/udev/rules.d/, reloads udev and re-triggers device events. The command elevates its own privileged steps via sudo (you are prompted for your password), so you do not need to wrap it as sudo fizzctl ... — that fails because the binary lives in a user-local path like ~/.local/bin. Unplug/replug the keyboard afterwards if the trigger did not pick it up.

Commands

Examples

All commands accept short flag aliases alongside their long forms:

Write keymap (most important)

Apply the full keymap (bindings, lighting zones, function keys) from a Cfg.ini — the file the official Redragon software exports:

fizzctl keymap Cfg.ini

• A keymap write keeps your current effect/color/brightness and any macros you have bound.
• fizzctl restore does the opposite: it resets the keyboard to factory state by writing the packaged stock keymap and lighting and wiping every macro.

Macros

Bind a key to a macro that types text. Each macro gets its own slot (up to 8), and previously bound macros are kept — the device's current keymap is read and reused as the base, and your lighting is untouched:

fizzctl macro --key CapsLock rgb          # type "rgb" each press
fizzctl macro --key LAlt --delay-ms 50 --cycles 3 hello
fizzctl macro --key 2 --until-released aaaa

Options: --delay-ms (default 30) is the delay between typed events, --cycles (default 1) plays the macro that many times per press, and --until-released types in a loop until the key is let go. Macros are read straight back off the keyboard's flash: each write reads the current keymap and macro table first, patches them, and writes the full table back — so later macro/keymap writes never drop your existing macros, and nothing is saved on the host. fizzctl macro --read dumps the on-device table back, each slot shown with the key(s) bound to it and whether it repeats until the key is released. To undo:

fizzctl macro --remove-all          # unbind every macro, keep keymap + lighting
fizzctl restore                     # full factory reset (keymap, lighting, macros)

Set the whole board to one color

fizzctl rgb red
fizzctl rgb 00ff00 --brightness 4       # or: rgb 00ff00 -b 4

Firmware effects

All 22 effects from the official Redragon software are supported, with full speed and brightness control. speed is 1..5 and brightness is 0..4 (5 levels each, matching the firmware); higher = faster / brighter. Run fizzctl effect with no name to list every effect:

fizzctl effect
fizzctl effect rainbow
fizzctl effect rainbow --speed 2 --brightness 4   # or: -s 2 -b 4
fizzctl effect fixed-on --color 00ff00 --brightness 3
fizzctl effect snake --color ff0000 --speed 4
fizzctl effect off

Aliases are supported: static → fixed-on, wheel → rainbow-wheel, snake → retro-snake, waterfall → colorful-waterfall.

Per-key painting

Keys are named by their top-left legend. Any key not listed turns off because the canvas is absolute:

fizzctl key W ff0000
fizzctl paint W=ff0000 A=00ff00 S=ffff00 D=ff00ff Space=ffffff

Host-side animations

Volatile — lost when the keyboard reconnects or reboots. Run fizzctl animate with no name to list the animations:

fizzctl animate
fizzctl animate rainbow --fps 30 --duration 10  # or: -f 30
fizzctl animate chase --color ff0000 --speed 2  # or: -c yellow -s 2
fizzctl animate solid --color 0000ff
fizzctl animate chase --daemon     # free the terminal; daemon streams until stopped
fizzctl animate stop               # stop the daemon

Debug mode

fizzctl --debug effect rainbow

Shows the raw frames and handshake bytes sent over HID.

Dev tools

The fizzctl-dev binary exposes the full reverse-engineering toolkit (capture inspect, diff, export, replay) in addition to all user commands.

fizzctl-dev inspect captures/r3.json
fizzctl-dev diff captures/r2.json captures/r3.json
fizzctl-dev export captures/r2.json frames.json
fizzctl-dev replay frames.json
fizzctl-dev cfg Cfg.ini
fizzctl-dev list

How the RGB paths work

Flash writes (rgb, key, paint, effect, keymap, macro, restore) send a burst through the vendor HID interface (258a:0049, interface 1, usage page 0xFF00). The sequence ends with a 5AA5 magic commit that writes to flash. Colors persist across reboots. Keys not listed in a key or paint canvas turn off.

Animations (animate) stream 382-byte per-key reports at the requested frame rate with no flash commit. They are host-side only and lost on reconnect.

Colors

Colors can be given as a name or RRGGBB hex (with or without #). Spaces, dashes and underscores in names are ignored, so light green, light-green and lightgreen are equivalent:

red green blue white black off
yellow cyan magenta orange pink purple lime teal violet indigo coral salmon
navy brown gold silver gray grey olive maroon
lightred lightgreen lightblue darkred darkgreen darkblue

Both -c yellow and --color ffaa00 work anywhere a color flag is accepted.