4replies
My Racing Game Steers Itself, Is My Accelerometer Out Of Calibration?
That is an accelerometer offset and you can correct it yourself. It is a stored calibration value, not a failed sensor, and a five degree error…
Arjun MehtaVerified Gamepad Tester team member
Calibration And Signal Processing Programmer at Gamepad Tester
Turns raw analog values into readings a player can actually act on.
Arjun writes the maths between a controller and the screen. A raw axis value is noisy, unscaled and centred imperfectly, so his filters handle the parts that decide whether a test is useful: removing sensor noise without hiding a genuine fault, normalising ranges across controllers that report differently, and plotting the result as a clean graph where real drift is visible and jitter is not mistaken for it.
On Gamepad Tester he maintains the calibration maths in the deadzone and drift tests, and explains in answers what a given reading does and does not prove.
- Hands-On
- Maintains the calibration and filtering maths behind the deadzone, drift and trigger readings shown on this site.
- Answers On Gamepad Tester
- 4
What Arjun Works On
Signal filteringaxis normalisationcalibration mathsdrift versus noisedata visualisation
Tests Arjun Looks After
Trigger Pressure TestAnalog trigger travel, pressure levels and sensitivityFree · Open tool Stick Drift TestDetect unwanted stick movement while you keep your hands offFree · Open tool Joystick Deadzone TestMeasure and calibrate the deadzone on both analog sticksFree · Open tool
Questions Answered By Arjun
4replies
My L2 Trigger Only Reaches About Half Way, It Will Not Read Full Press
The trigger's potentiometer arm has slipped on its shaft, so the sensor is only sweeping part of its range while the trigger travels fully. It is a…
5replies
Clicking My Right Stick Also Nudges The Camera Slightly
Every controller does this to some degree and a small jump is normal. 0.05 is on the high side but within tolerance, and it is a physics problem…
7replies
My Gyro Aim Slowly Pulls To The Right Even When I Hold Still
A constant non-zero reading on one axis is gyro bias, and it is normal for every gyro to have some. It is fixable by recalibration rather than…
The Team Behind These Answers
Calder WrightFront-End Web Architect And Gamepad API Lead
Elena RostovaHardware Diagnostics Engineer
Garrett LindsayHardware Reviewer And Input Performance Specialist
Venom’s Tech (Abhishek)Peripheral Reviewer And Tech Journalist
Chloe HendersonHall Effect And Thumbstick Analyst
Thiago AlvesHardware Repair Educator
Devon MillerLow Latency And Input Timing Engineer
Liam DaviesBluetooth And Wireless Test EngineerEach answer is written by the specialist who owns that part of the hardware, tested on a real controller, and checked by a second team member. How we verify answers