Stick Consistency Test — Same Input, Same Output
Hold a stick still and the tool checks whether it reports the same value every frame. This stick consistency test measures how steady your analog output really is when your input isn't changing.
A healthy stick held in one spot should report a near-identical coordinate again and again. A worn one jitters — the value flickers even though your hand never moved. This joystick repeatability test samples the output over a short window and scores how much it drifts. Everything runs in your browser through the standard Gamepad API — no download, no signup, nothing leaves your device.
Press a button to begin
Connect via USB or pair over Bluetooth, then press any button so the browser detects your pad.
Hold the stick steady in any position — a flat line means a steady signal.
Hold the stick still, then capture a 3-second reading.
Test at centre, then again pushed partway out — a worn stick often jitters more under tension.
A steady hand should mean a steady number
When your hand isn't moving, the reported value shouldn't be either. A stick value stability test is really a check on one simple question — does the output sit still when your input does?
The trace holds a near-flat line. Hold the stick anywhere and the coordinate it reports barely moves — the mark of a healthy, reliable stick.
High scoreThe trace flickers up and down even though your hand is still. The stick reports a different value frame to frame — an output fluctuation fault.
Low scoreWhat makes the signal jitter
A controller stick reliability test reflects the physical and electrical state of the stick. Jitter usually traces back to one of these.
Worn potentiometer contact
As the wiper and resistive track wear, the electrical contact becomes unstable. The reading flickers because the contact itself isn't constant.
Electrical noise
Low-quality or aging components let small amounts of electrical noise into the signal, which shows up as a constant fine tremor in the value.
A loose pivot or gimbal
If the stick's pivot has play in it, tiny vibrations and hand pressure shift the position slightly — the output wanders even when you feel still.
Debris under the stick
Grit on the resistive track makes the wiper skip over an uneven surface, producing an inconsistent reading from one frame to the next.
Reading your consistency score
The tool turns the fluctuation in your sampled values into a 0–100 score. The lower the jitter, the higher the score.
Excellent
A very steady signal. The stick reports a near-identical coordinate every frame — a reliable, repeatable stick.
Fair
Minor fluctuation, usually harmless. Worth a clean and a re-test, especially if it sits at the lower end.
Poor
Unstable output. The reading visibly jitters — the stick has a real consistency fault worth addressing.
Test more than one position. A stick can hold a steady signal at centre but jitter once pushed partway out — an analog stick steady signal test is most telling under light tension.
A reliable testing routine
A consistency check is most useful when you sample more than once. Run this short routine for a result you can trust.
Hold at centre
Let the stick rest at neutral and sample. The trace should sit close to flat.
Hold partway out
Push to about half and hold still. Jitter often appears once the stick is under tension.
Hold at the edge
Sample with the stick pushed fully out to check the signal at maximum deflection.
Compare the scores
A healthy stick scores well at every position — a big gap points to a fault.
Improving a poor consistency score
A low score isn't always a dead stick. Work through these from the simplest fix upward.
Clean the stick
Compressed air around the collar clears grit off the resistive track — a common cause of frame-to-frame jitter.
Work the stick
Several slow full rotations can shift loose debris and settle a stick that's only mildly unstable.
Re-test wired
Sample over USB rather than Bluetooth to rule out a flaky wireless link adding noise to the reading.
Replace the module
Persistent jitter from a worn potentiometer doesn't recover — the stick module needs replacing.