Mouse Diagnostic

Double-Click Test

Test your gaming mouse for double-click switch faults and contact bounce online for free. Detect Omron microswitch chatter, debounce failure, and click intervals.

CLICK HERE REPEATEDLY (SINGLE CLICKS ONLY) No Faults Detected Single-click 50–100 times to test mechanical switch debounce integrity.

TOTAL TEST CLICKS 0

DOUBLE-CLICK FAULTS 0

FASTEST INTERVAL 0 ms

Microswitch Chatter Health Benchmarks

Perform 50 deliberate single clicks on Left and Right buttons:

0 Faults / 50 Clicks (Clean)

Zero switch chatter detected. Leaf spring tension and contact plating are operating with factory integrity.

1–3 Faults / 50 Clicks (Early Wear)

Intermittent chatter (< 80ms interval). Increase mouse driver debounce time by +4ms to filter early bouncing.

> 4 Faults (Hardware Failure)

Severe contact oxidation or leaf spring deformity. Requires microswitch desoldering/replacement or RMA.

How to Get Started

Just three steps to run a complete controller test and understand your controller's health status.

Connect Controller

Connect your controller to your computer via USB cable or Bluetooth. If the browser doesn't respond, press any button on the controller to activate the connection.

Button Detection

Press each button in the visual interface and confirm the corresponding area lights up on screen. This helps troubleshoot unresponsive or double-clicking buttons.

Sticks & Vibration

Rotate the sticks to check linearity and drift issues; click the vibration test button to feel if the left and right motor feedback is working properly.

What would you like to do next?

Select a diagnostic calibration suite, deadzone analyzer, or high-frequency overclock tool.

Fix

Repair & Calibration

Calibrate zero-point offsets or follow step-by-step repair guides.

WebHID Calibration

Optimize

Game Deadzones

Calculate exact radial vs axial deadzone overlays for Fortnite, Apex, & COD.

Deadzone Calculator

Telemetry

Overclock & Circularity

Verify browser-observed update timing Hz stability and statistical circularity grades.

Hz & Circularity Tools

The Electrochemistry of Mouse Switch Double-Click Failure

The infamous mouse double-clicking flaw (frequently seen in legendary mice like the Logitech G Pro Wireless with Omron D2FC-F-K 50M switches) is rooted in electrical contact physics.

Why 3.3V Low-Power Logic Accelerates Switch Chatter

Wetting Current Starvation: Industrial microswitches were originally engineered for 5V circuits drawing 10mA–100mA of current, which generates a micro-spark that naturally burns off atmospheric oxidation. Modern energy-efficient wireless mice run at 3.3V (or 1.8V) drawing micro-amps, allowing silver oxide layers to insulate the contacts.
Contact Bounce Harmonic Vibration: When the curved copper leaf snaps downward, it physically rebounds against the stationary terminal 3 to 7 times in under 15ms.
Debounce Algorithm Bypass: When the oxidized resistance fluctuates above and below the logic voltage gate, the firmware interprets the contact bounce as a separate intentional second click.

Fixing Double Clicks: Debounce Tuning vs. Microswitch Swaps

While increasing debounce in companion software can extend switch life by a few months, permanent resolution requires desoldering the failing switches and installing gold-alloy contact switches (such as Huano Blue Shell Pink Dots or TTC Gold 80M) or upgrading to an optical switch mouse.

Controller Hardware Glossary & Tips

Stick Drift & Deadzones

Stick drift occurs when analog sticks register input without being touched. This is typically caused by physical wear in traditional carbon-film potentiometers. A deadzone is a software-level threshold (e.g., 5-10%) applied to ignore these microscopic false inputs.

Hall Effect Sensors

Unlike traditional ALPS potentiometers, Hall Effect modules use magnetic fields to measure stick position. Because there is no physical contact or friction between the internal components, they are virtually immune to wear-induced stick drift, drastically extending the controller's lifespan.

Polling Rate (Hz) & Input Latency

Polling rate is how often your controller sends data to your device, measured in Hertz (Hz). A standard Bluetooth connection yields around 125Hz (8ms latency). Overclocking or using a wired USB connection can push this to 500Hz-1000Hz (1ms-2ms latency), critical for competitive gaming.

Circularity Error

When you rotate a joystick along its outer edge, a perfect module should trace a mathematically perfect circle. Circularity error measures the deviation from this perfect circle. High deviations (>15%) can result in uneven diagonal movement speeds in FPS games.

Frequently Asked Questions

Everything you need to know about testing your controller.

How do I test if my mouse is double-clicking on single clicks?

Slowly click the green test box above 50 to 100 times, releasing your finger completely between each tap. If a single physical press triggers two increment counts or registers an inter-click interval under 80 milliseconds, your microswitch has mechanical contact bounce failure.

What causes mechanical mouse switches (like Omron 50M) to double click?

Double-clicking is caused by contact bounce and oxidation. Modern wireless mice operate at ultra-low 3.3V logic levels without enough "wetting current" to burn off microscopic surface oxidation on the gold/silver plated copper leaf springs, creating voltage chatter that slips through debounce filters.

How do optical mouse switches prevent double-clicking permanently?

Optical switches (Razer Optical, Logitech LIGHTFORCE) actuate using an infrared light beam rather than touching metal contacts. Because there are no physical metal leaves closing an electrical circuit, contact bounce and oxidation cannot occur.

Can I fix a double-clicking mouse with software without soldering?

Yes, as a temporary fix. In your mouse software (or utilities like MouseFix / X-Mouse Button Control), increase the "Debounce Time" from 4ms to 10ms–14ms. This forces the microcontroller to ignore rapid chatter bounces.

What are the most reliable replacement microswitches for mice?

Top-tier replacement mechanical switches resistant to double-clicking include Huano Blue Shell Pink Dot (transparent blue), Kailh GM 8.0 Black Mamba, TTC Gold Dustproof 80M, and Zippy microswitches.

How this test works & its limits

This test reads your controller through the browser's standard Gamepad API — no drivers, no installs, nothing leaves your device.
Readings depend on connection mode: Bluetooth reports at lower rates than USB. Compare like-for-like (wired vs wired).
We measure the input reaching the browser — display lag and game-engine queues are outside this test's view.
A clean reading now does not guarantee no drift in-game: deadzones differ per game, and wear develops over time. Use the Drift Timeline to track yours.
This is a diagnostic, not a hardware-lab certification. For repair or RMA decisions, confirm with a second run or second tool.

Read the full methodology

100% Client-Side

All Gamepad API data stays in your browser. Zero tracking or data collection.

Instant Results

No downloads, plugins, or software installation needed. Works instantly.

Free Forever

No paywalls, subscription requirements, or hidden usage limits.