Keyboard Double Click Test
Press any key to detect chatter (double-input) issues
| # | Key | Gap (ms) | Status |
|---|---|---|---|
| Press keys to see event log... | |||
What is Keyboard Chatter?
Keyboard chatter (also called "key bounce" or "double input") happens when a single physical keypress registers multiple times in rapid succession. This is especially common in aging mechanical keyboards where the switch's metal contacts bounce before settling. It can cause missed inputs, repeated characters, and frustrating gameplay.
Common Causes
• Worn-out switches: Contact springs degrade with millions of actuations
• Contamination: Dust, liquids, or debris interfering with the contact points
• Manufacturing defects: Rare in quality brands, more common in budget switches
• Loose switch housing: Switch wobble causes intermittent contact
Fixes for Keyboard Chatter
• Software debounce: Tools like Keyboard Chatter Fix (Windows) add an artificial debounce delay
• Clean the switch: Use compressed air or contact cleaner spray under the keycap
• Hot-swap the switch: If you have a hot-swap PCB, simply swap the problematic switch
• Solder a new switch: For non-hot-swap boards, desoldering is required
• Increase firmware debounce: Custom firmware like QMK lets you set a higher debounce time