Switch-oriented browser diagnostics
Observe individual key registration, conservative chatter patterns, intentional hold repeats, and simultaneous key detection in one compact workflow.
Switch-oriented workflow
Use 20–30 normal, fully released presses on the selected key.
0 unique keys tested; 0 currently pressed.
Held-key repeat events do not increase the simultaneous-key peak or chatter count.
Swipe sideways to view the full keyboard.
Reading the workflow
The tool reuses the site's conservative chatter sequence and NKRO peak. It cannot measure actuation force, physical travel, firmware debounce values, hardware polling rate, or real electrical latency.
Possible chatter is shown only when a very short completed down–up cycle is followed almost immediately by another non-repeat keydown. Fast intentional taps with ordinary press or release timing and held-key repeats are not automatically labeled chatter.
Space, Enter, and Shift often use stabilizers. Uneven feel, rattle, or binding is mechanical information the browser cannot inspect; this page can only show whether key events arrive.
Hot-swap boards may allow manufacturer-approved switch replacement, while soldered boards generally require skilled service. Do not disassemble powered hardware or rely on this page as a repair instruction.
Layers, macros, debounce settings, accessibility features, and remapping software can change what applications receive. Save configuration before changing it and prefer documented vendor procedures.
The peak is the most simultaneous key positions this browser observed in this session. It is not a certification of the board's advertised rollover and may vary by connection, combination, browser, or operating system.
Retry the same switch normally, compare another port or computer, and follow the maker's cleaning guidance. Raw events, timings, selected keys, and combinations remain temporary and are not stored or sent.