Controller Diagnostic

Button Tester

Test every button on your PS5 DualSense, Xbox, or Switch controller. Real-time response visualizer, click counter, and multi-button ghosting detector.

Press any button to begin testing...
Gamepad Disconnected

Face Buttons (Action)

A / Cross 0
B / Circle 0
X / Square 0
Y / Triangle 0

Shoulders & Triggers

L1 / LB 0
R1 / RB 0
L2 Pull 0%
R2 Pull 0%

D-Pad Directional

Up 0
Down 0
Left 0
Right 0

Center & Stick Clicks

Select / Share 0
Start / Options 0
L3 (Left Stick) 0
R3 (Right Stick) 0

Button Health Guidelines

All action buttons and D-pad inputs should illuminate immediately upon press and clear immediately upon release. If inputs flicker or stick, clean around the membrane or conductive rubber pad with 99% isopropyl alcohol.

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Repair Guide

Step-by-step tutorial to calibrate or repair your controller.

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Game Settings

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Run full diagnostic checkup

Combine button testing with stick drift and trigger response analysis.

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Measure input rate in Hz.

How Controller Buttons Work and Why Switches Fail

Gamepads use conductive silicone rubber pads or mechanical microswitches beneath face buttons and shoulder bumpers. When pressed, the conductive carbon pill completes a circuit on the PCB trace.

Common Button Issues

  • Unresponsive Buttons: Carbon pill worn down or liquid spill residue blocking PCB contacts.
  • Sticking Buttons: Dirt and sugar build-up inside the plastic button housing.
  • Double Registering: Worn rubber dome spring tearing, causing false double-clicks.

Frequently Asked Questions

How do I test if a controller button is sticking or broken?

Press each face button and shoulder bumper on your gamepad while watching the Button Tester chips above. If a button chip stays green after release or fails to highlight, the physical switch is sticking or worn.

What is gamepad button ghosting?

Button ghosting occurs when pressing multiple buttons simultaneously causes unregistered inputs or false triggers. Our tool checks matrix isolation so every simultaneous press is recognized.

Does this test face buttons, D-pad, and stick clicks?

Yes! It tests A/Cross, B/Circle, X/Square, Y/Triangle, L1/R1, L2/R2, L3/R3 stick clicks, D-Pad (Up, Down, Left, Right), Select/Share, and Start/Options.

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.

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