[murkle]

Magic, thanks! Which model mat do you have?

It might be worth trying with WebHID instead of the GamePad API. Quick example with a joystick :)

https://murkle.github.io/utils/webhid/logitech_attack3.html

[murkle]

... and a quick example with a very cheap USB Dance Mat https://murkle.github.io/utils/webhid/dance_mat.html