Mechanical Rotary Encoders vs Optical Scroll Wheels
Most gaming mice feature TTC Gold, Kailh, or ALPS mechanical scroll encoders.
Mouse Diagnostic
Scroll Wheel Tester
Test mouse scroll wheel direction, line steps, and encoder jumping faults online. Detect reverse scrolling issues on gaming mice free.
SCROLL MOUSE WHEEL UP AND DOWN HERE IDLE 0 total scroll steps
Scroll Wheel Diagnostics
Scroll steps should register consistently without random direction reversals or skipped lines.
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Compare ModelsFrequently Asked Questions
How do I test my mouse scroll wheel for reverse scrolling faults?
Scroll your mouse wheel continuously in one direction (e.g. downward) over the test target box above. If the indicator briefly flickers "SCROLLING UP", your scroll encoder has a reverse scroll fault.
What causes mouse scroll wheel reverse jumping?
Scroll wheel jumping occurs when dust, hair, or grease accumulates inside the mechanical rotary encoder wheel. Cleaning the encoder with 99% isopropyl alcohol or compressed air usually fixes it.
Does this test free-spinning and notched scroll wheels?
Yes! It measures all optical and mechanical scroll encoders, including Logitech MagSpeed and free-spinning wheels.
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