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Controller Diagnostic

Deadzone Visualizer

Test and visualize inner and outer stick deadzones for Apex, COD, and Fortnite. Find the perfect deadzone setting to eliminate drift while keeping max responsiveness.

Move thumbsticks to test deadzone responsiveness...
No Controller Detected

Left Stick Response

In Deadzone
Magnitude 0.0%
Active Input NO

Right Stick Response

In Deadzone
Magnitude 0.0%
Active Input NO

Optimal Deadzone Guidelines

Adjust the inner deadzone slider above until your resting thumbsticks show "Filtered (Deadzone)". That exact percentage is your ideal in-game inner deadzone setting.

How to Get Started

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

01

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.

02

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.

03

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.

Optimize

Game Deadzones

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

Telemetry

Overclock & Circularity

Verify true hardware polling Hz stability and statistical circularity grades.

Optimize settings for your favorite games

Get custom deadzone recommendations for Apex Legends, Warzone, and Fortnite.

How Controller Deadzones Work and How to Tune Them

In competitive gaming, deadzones bridge the gap between mechanical hardware wear and software responsiveness. Setting your deadzone too high creates input lag; setting it too low causes stick drift.

Inner vs Outer Deadzones

  • Inner Deadzone: Filters out small resting stick vibrations near the center position.
  • Outer Deadzone: Caps maximum input distance, allowing full speed activation without pushing to the physical gate edge.

Frequently Asked Questions

Everything you need to know about testing your controller.

What is controller deadzone?

A deadzone is a designated area around an analog stick's central resting point where movement is intentionally ignored by games. It prevents minor thumbstick drift from causing unwanted camera or character movement.

Should I use a lower or higher deadzone in FPS games?

Competitive FPS players (Apex Legends, COD) aim for the lowest possible inner deadzone (3% to 5%) for faster reaction times. If your controller has stick drift, increase the deadzone until camera movement stops.

What is outer deadzone?

Outer deadzone sets the threshold where stick input registers at 100% maximum value. Setting an outer deadzone of 95% ensures you reach full turn speed even if your stick housing is slightly worn.

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

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