One Key Keyboard
WebSerial Configurator — open in Chrome or Edge
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Connection
Not connected
Connect
Disconnect
Current Configuration
Active combo on device
—
Set New Combo
Single Key
Key Combo
String
String + Key
Media Key
Click to capture a keypress
Click to capture key...
Or select a special key
— select —
Tab
Return / Enter
Esc
Backspace
Delete
Space
Up Arrow
Down Arrow
Left Arrow
Right Arrow
Home
End
Page Up
Page Down
Insert
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
Modifiers
Ctrl
Shift
Alt
GUI ⌘/Win
Key (click to capture)
Click to capture key...
Or select a special key
— select —
Tab
Return / Enter
Esc
Backspace
Delete
Space
Up Arrow
Down Arrow
Left Arrow
Right Arrow
Home
End
Page Up
Page Down
Insert
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
Text to type
Text to type
Followed by key
Return / Enter
Tab
Esc
Space
F1
F2
F3
F4
F5
Media key
Volume Up
Volume Down
Mute
Play / Pause
Next Track
Previous Track
Stop
—
Reset
Send
LED Settings
Connected color
Pressed color
Brightness
255
Apply
Sleep Timeout
Minutes of inactivity before sleep (0 = disabled)
Set
Serial Log
John Park for Adafruit 2026