HALCYON
A Wooting keyboard
Any Wooting HE model. Other analog brands aren't supported yet.
Show your Wooting keyboard's analog key travel live in OBS.
Nothing to install. Everything runs locally on your PC, and it can start with Windows.
Video coming soon
LIVE · overlay connected to OBS
What you need
Chrome or Edge
On desktop. The keyboard is read over WebHID, which Firefox and Safari don't offer.
OBS Studio 30+
With its WebSocket server turned on (Tools → WebSocket Server Settings).
Why an analog overlay?
Classic input overlays show a key as on or off; your Hall effect keyboard is analog, so
show what it can actually do.
Halcyon is the simplest and most complete way to do it: fully styleable, nothing to
install.
Pressure, not just clicks
Each key fills with press depth and switches color at actuation. The stream shows half-presses, feathering, Rapid Trigger releases: everything an on/off keyboard visualizer misses.
Ready to use in 3 steps
A wizard walks you through: the keyboard is detected on its own, OBS connects with a copy-paste URL, and you add keys simply by pressing them. No files to edit.
Your style, down to the key
Colors, size, fill direction, corner radius, opacity: everything is configurable, globally or per key. Arrange keys freely on the canvas and show only the ones that matter.
Local, private, zero lag
Everything happens between your browser and your own OBS: keystrokes, layouts and OBS connection details never leave your PC. No server in between, no delay.
See it in action
Situations where analog genuinely changes what your Twitch or YouTube viewers understand.
Video coming soon
Counter-strafing, finally visible
Competitive FPS: film a duel where you stop dead with an opposite tap. The overlay shows A releasing while D rises: the move chat always asks about.
Video coming soon
Controller-like control, on keys
Racing game or Rocket League in axis mode: a tight corner with the throttle held at 60%. A gauge floating mid-travel proves the keyboard really is analog. The perfect answer to "that's impossible on keyboard".
Video coming soon
Before / after
The same run, split-screen: on/off overlay on one side, Halcyon on the other. Ten seconds is enough for the difference to jump out. Great as a short for socials or a Twitch clip.
Video coming soon
From launch to live in 90 seconds
Timelapse of a real setup: keyboard detected, OBS connected, keys added by pressing them. The best proof that "ready in 3 steps" isn't a slogan.
Ready in three steps
The wizard does the work; each step validates itself.
Plug in your keyboard
The app detects your analog keyboard automatically. Nothing to configure.
Connect OBS
Paste the provided URL into a browser source. Your OBS connection details stay on your machine.
Press your keys
Every key you press joins the overlay, already in place. Rearrange, recolor and resize as you wish.
Questions
The short answers. The full guide has the long ones.
Does anything leave my PC?
No. Your keystrokes, layouts and OBS password stay in your browser and travel only to your own OBS on your local network. There is no account, no server-side storage, no analytics. Two people using the site at once can't see each other's keys.
Which keyboards are supported?
Every Wooting keyboard with Hall effect analog switches (60HE, 80HE, Two HE and variants). Other analog brands (Razer, SteelSeries, Keychron, DrunkDeer…) use their own protocols and aren't supported yet. Want yours next? Open an issue on GitHub.
Why Chrome or Edge only?
Reading key travel needs WebHID, which only Chromium browsers implement. Any Chromium-based browser works; Firefox and Safari don't. The overlay itself runs in OBS's own browser, so this only concerns the setup page.
Is my OBS password safe in the URL?
It never leaves your machine, but it is visible in the browser source properties. Keep OBS's properties window and the capture page off stream, like any settings screen.
Will it cost me frames in game?
The overlay is an SVG in a browser source, redrawn only when a key moves. It's in the same league as a chat widget. The capture page can stay minimized once your keys are placed.
Does it work with Streamlabs or other software?
OBS Studio 30+ only for now: Halcyon talks to OBS through its built-in WebSocket server. The overlay page can also be opened in any browser window if you want to record it another way.
Is it really free?
Yes. No premium tier, no watermark. The source is public on GitHub under the PolyForm Shield licence: you can read it, modify it and host your own copy, as long as you don't use it to build a competing product.