Mouse Scroll Wheel & Mechanical Encoder Benchmark
Test mouse scroll wheel encoder steps, directional velocity, and wheel button (MMB) actuation. Detect loose scroll wheels and skipped steps.
Universal Mouse Diagnostic Suite
Click any mouse button, scroll the wheel, or move inside the canvas to test hardware switches and polling stability.
No double-click chatter faults detected on mechanical switches.
Frequently Asked Questions (Mouse Scroll Wheel & Mechanical Encoder Benchmark)
10-Item Technical FAQ & PointerEvent Telemetry Troubleshooting
How do I test my mouse scroll wheel online?
Scroll up and down inside the test window to verify vertical/horizontal scroll event dispatch and encoder steps.
What is a mechanical mouse scroll encoder?
A mechanical encoder uses a notched wheel with metallic contacts to register discrete scroll steps (notches).
What causes a mouse scroll wheel to jump in the wrong direction?
Dust, hair, or worn encoder contact wheel leaves cause the sensor to read inverted optical or electrical quadrature signals.
How do optical scroll encoders differ from mechanical encoders?
Optical encoders break infrared light beams, offering longer lifespan and immunity to physical contact wear.
How do I test Middle Mouse Button (MMB) click actuation?
Press straight down on your scroll wheel to verify MMB switch contact closure.
What is infinite / free-spin scrolling on Logitech mice?
Free-spin mode disengages the mechanical ratchet clicker, allowing the scroll wheel to spin freely on dual-mode bearings.
How do I fix a loose or jumpy scroll wheel?
Clean the encoder housing with compressed air or 99% isopropyl alcohol; severe skipping requires encoder replacement.
Does this test support horizontal tilt-wheel scrolling?
Yes, horizontal tilt events (deltaX) are captured alongside standard vertical scroll events (deltaY).
Why does my browser scroll the web page during testing?
Our diagnostic engine intercepts wheel event listeners to prevent default page scrolling while testing.
How do I export scroll wheel test logs?
Click 'Export Passport' to download a JSON hardware certificate certifying your scroll wheel encoder status.