Behind the scenes, this website is the culmination of one year of dedicated effort in reverse-engineering DualShock controllers for fun/hobby from a random guy on the internet.

Through this research, it was discovered that there exist some undocumented commands on DualShock controllers that can be sent via USB and are used during factory assembly process. If these commands are sent, the controller starts the recalibration of analog sticks.

While the primary focus of this research wasn't initially centered on recalibration, it became apparent that a service offering this capability could greatly benefit numerous individuals. And thus, here we are.

Yes, only DualShock4 at the moment. This happened because I accidentally purchased some clones, spent time identifying the differences and added this functionality to prevent future deception.

Unfortunately, the clones cannot be calibrated anyway, because they only clone the behavior of a DualShock4 during normal gameplay, not all the undocumented functionalities.

If you want to extend this detection functionality to DualSense, please ship me a fake DualSense and you'll see it in few weeks.

I maintain two separate to-do lists for this project, although the priority has yet to be established.

The first list is about enhancing support for DualShock4 and DualSense controllers:

• Implement calibration of L2/R2 triggers.
• Improve detection of clones, particularly beneficial for those seeking to purchase used controllers with assurance of authenticity.
• Enhance user interface (e.g. provide additional controller information)
• Add support for recalibrating IMUs.
• Additionally, explore the possibility of reviving non-functioning DualShock controllers (further discussion available on Discord for interested parties).

The second list contains new controllers I aim to support:

• DualSense Edge
• DualShock 3
• XBox Controllers

Each of these tasks presents both immense interest and significant time investment. To provide context, supporting a new controller typically demands 6-12 months of full-time research, alongside a stroke of good fortune.

No.

Yes. Simply do another permanent calibration.

Stickdrift is caused by a physical defect; namely dirt, worn potentiometer or in some cases a worn spring.

This software will not fix stick drift on its own if you already experience that. What it will help with, is ensuring the new joystick(s) will function properly after replacing the old one(s) to work well with.

I have noticed some controllers out of the box have worse factory calibration than if I would recalibrate them. Especially true for circularity of SCUF controllers with a unique shell.

No.

This issue happens because you have clicked "Done" immediately after starting a range calibration.

You have to rotate the joysticks before you press "Done".

Make sure to touch the edges of the joystick frame and rotate slowly, preferably in each direction - clockwise and anti-clockwise.

Only after you have done that, you click on "Done".