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Diagnostic

Nintendo Switch Tester

Test your Nintendo Switch Pro Controller and Joy-Cons for stick drift instantly in your browser. Plus, a complete guide on how to fix Joy-Con drift permanently.

Nintendo Switch Joy-Con Suite
Press any button to connect
POLLING: 0 Hz | LATENCY: 0.0 ms
L3 X Y A B R3
Button Pressed
Rest / Default
Analog Sticks & Drift Linearity, Offset & Circularity
L-STICK R-STICK
X: 0.000 Y: 0.000
X: 0.000 Y: 0.000
Analog Triggers (L2 / R2) Pressure Curve (0.000 – 1.000)
LT / L2
0.000
RT / R2
0.000
Raw Gamepad API Data 0-17 Buttons & Active Axes
ANALOG AXES (0 - 3) Bipolar [-1.00 to +1.00]
0
+0.00
1
+0.00
2
+0.00
3
+0.00
Connect a controller or press any button to inspect live Gamepad API telemetry.

Haptic Vibration Test

Dual Rumble Actuators
Awaiting Command

Tests dual-rumble actuators (Left Heavy & Right Light) via browser Vibration API.

Custom Intensity 70%

Diagnostics Results

Hardware variance and drift severity classification scale.

Grade A · 0.0% – 2.0%

Healthy Centering & Precision

Normal factory variance. Controller stick operates with precision zero-point accuracy and zero resting drift offset. Hardware is in perfect condition.

Optimize Deadzones

Buttons & Vibration

Test all button responses and verify ABXY layout mapping. Dual motor vibration testing with independent left/right motor control. Check your force feedback system health and detect sticky triggers or failing microswitches.

Run Full Diagnostic
Grade B

Polling Rate & Latency

Measure your controller's actual polling rate. Compare input latency.

Hz & Circularity Tools
Local & Secure

100% Client-Side

Built on the standard Gamepad API. All processing happens locally in your browser.

Read Methodology

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.

WebHID Calibration
Optimize

Game Deadzones

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

Deadzone Calculator
Telemetry

Overclock & Circularity

Verify true hardware polling Hz stability and statistical circularity grades.

Hz & Circularity Tools
Repair Guide

What is the best way to fix Nintendo Switch controller drift?

To fix Nintendo Switch controller drift permanently, replace the faulty potentiometer stick with a Hall-effect sensor module. For a temporary fix, use electronic contact cleaner under the rubber stick skirt to remove debris. Always re-calibrate your controller in system settings afterward to ensure accurate input.

Recommended Actions

Start with the Stick Drift Test. It works with both Joy-Cons and the Pro Controller — the reading tells you whether to file an RMA or swap in Hall-effect modules.

Related Diagnostic Tools

🔵

Joy-Con Specific Tester

Specialized tools for testing L/R Joy-Con pairs.
🎮

Switch Pro Diagnostics

Deep diagnostic suite for the Pro Controller.
🧭

Nintendo Gyro Tester

Test the 6-axis IMU motion controls.

Comprehensive Nintendo Switch Hardware Diagnostics

The Switch family has two very different controllers: modular Joy-Cons for portable play and the Pro Controller for longer sessions. This tool detects whichever one you connect and tests both through the Gamepad API — drift, buttons, and gyro — no Switch console or third-party software required.

Quantifying Joy-Con Drift

Joy-Cons use extremely thin, proprietary graphite pads instead of full-size ALPS potentiometers, so stick drift hits them earlier. The visualizer plots the resting X and Y position of each stick on a canvas. If a stick rests above 2% variance, that is confirmed hardware drift — proceed with a Nintendo RMA or a DIY Hall-effect stick replacement.

Validating Pro Controller Precision

The Pro Controller is a different machine: standard analog potentiometer sticks, digital shoulder triggers, and a 6-axis IMU. Use the suite to confirm the D-Pad is not registering accidental diagonals — a known issue in early batches — and that both HD Rumble actuators fire symmetrically.

Frequently Asked Questions

Everything you need to know about testing your controller.

How do I connect my Nintendo Switch controller to PC or Mac?

For Joy-Cons, press and hold the small sync button on the rail until the lights flash, then pair via Bluetooth on your PC/Mac. For the Pro Controller, use a USB-C cable or hold the sync button on top to pair via Bluetooth.

What is Joy-Con drift?

Joy-Con drift is a hardware defect where the analog stick registers movement even when you aren't touching it. It is caused by the carbon pads wearing down inside the potentiometer module over time.

How can I fix Joy-Con drift permanently?

The only permanent fix is replacing the stock analog sticks with Hall-effect joystick modules. Hall-effect sensors use magnets instead of physical contacts, completely eliminating wear and tear that causes drift.

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.