AnalogSense.js

JavaScript API for analog keyboard input.

Supported Keyboards/Devices

• Everything by Wooting
• Everything by NuPhy
• Everything by DrunkDeer
• Razer Huntsman V2 Analog^R
• Razer Huntsman Mini Analog^R
• Razer Huntsman V3 Pro^R
• Razer Huntsman V3 Pro Mini^R
• Razer Huntsman V3 Pro Tenkeyless^R
• Keychron Q1 HE^{P, F}
• Keychron Q3 HE^{P, F}
• Keychron Q5 HE^{P, F}
• Keychron K2 HE^{P, F}
• Lemokey P1 HE^{P, F}
• Madlions MAD60HE^P
• Madlions MAD68HE^P
• Madlions MAD68R^P

^R Razer Synapse needs to be installed and running for analogue inputs to be received from this keyboard.

^P The official firmware only supports polling, which can lead to lag and missed inputs.

^F Custom firmware with full analog report functionality is available.

Usage

You can download and vendor the AnalogSense.js yourself, but you can also just load it straight from this repo:

<script src="https://analogsense.org/JavaScript-SDK/AnalogSense.js"></script>

Once loaded, the following global functions become available:

• analogsense.getDevices(): Promise<Device[]>
• analogsense.requestDevice(): Promise<Device | undefined>
• analogsense.scancodeToString(scancode: number): string

A device instance has the following members:

• startListening(handler: function<void({scancode: int, value: float}[])>)
• stopListening()
• getProductName(): string
• forget()
• dev: HIDDevice

Scancodes

The scancodes provided by this library are primarily HID scancodes; most keys are mapped as seen on usage page 0x07 (A = 0x04, B = 0x05, ...).

Control keys (usage page 0x0C) are mapped in the 0x3__ range, modulo 0x100:

• 0x3B5 = Next Track
• 0x3B6 = Previous Track
• 0x3B7 = Stop Media
• 0x3CD = Play/Pause
• 0x394 = Open File Explorer
• 0x323 = Open Browser Home Page

OEM-specific keys are mapped in the 0x4__ range:

• 0x401 = Brightness Up
• 0x402 = Brightness Down
• 0x403 = Profile 1
• 0x404 = Profile 2
• 0x405 = Profile 3
• 0x408 = Profile Switch
• 0x409 = Function Key (Fn)