d3vices

C-01KeyboardEvent

Keyboard test

Test every key on your keyboard. Keys light up as you press them and stay marked once seen, so you can find a dead switch. Includes ANSI, ISO and JIS layouts, modifier and lock state, key repeat rate and n-key rollover.

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Permissions

None. This test needs no browser permission at all.

Nearby instruments

C-02

Mouse test

Every button including back and forward, scroll in both axes, double-click timing and a polling-rate estimate.

C-03

Touchscreen test

Draw with up to ten fingers at once, see pressure and contact size, and find dead zones in the digitiser.

C-04

Gamepad test

Every button and axis of a connected controller, live, with stick drift measurement and rumble.

C-05

MIDI test

See notes, velocity, CC and pitch-bend from any connected MIDI controller on a live piano roll.

A-01

Microphone test

Check that your mic is heard, see a live waveform, watch the input level and record a short clip to play back.

A-02

Speaker test

Play a tone through the left and right channel independently, sweep the audible range and check for a blown driver.