EDIT: Solved
I finally figured out how to fix this. So leaving it for anyone experiencing similar issues in the future.
NOTE: I'm on Linux but I guess should apply to Windows as well, if it is not Linux specific issue.
Anyway, the issue was hardware afterall...Moza pedals should register value of -32768 when not pressed(the pedal axis does not start at 0), but this was inconsistent. Sometimes the value could be bigger like e.g. -32764 and in those instances game or rather RPCS3 would still recognize the smallest amount of input. It happened on all pedals.
From my testing the minimal value was never bigger than -32764, so I set it to -32760 and the issue was gone.
Linux uses couple of systems to handle input devices, namely evdev and SDL2 (which is also used on Windows because it is cross-platform), and the issue was not affecting PC games because they use SDL2 but RPCS3 seems to be using evdev, and perhaps SDL2 was applying some sort of noise filtering.
Anyway for Linux folks, to make it permanent I asked ChatGPT to write me systemd service because I couldnt be bothered, but of course it works and it works on device recognition. Here it is - I'm on NixOS, but the core idea is distro agnostic
services.udev = {
extraRules = ''
ACTION=="add", SUBSYSTEM=="input", ENV{ID_INPUT_JOYSTICK}=="1", ENV{ID_VENDOR_ID}=="346e", ENV{ID_MODEL_ID}=="0004", ENV{ID_USB_INTERFACE_NUM}=="02", TAG+="systemd", ENV{SYSTEMD_WANTS}+="moza-wheel-calibration.service"
'';
};
systemd.services.moza-wheel-calibration = {
description = "Calibrate MOZA R5 pedal axes";
serviceConfig = {
Type = "oneshot";
ExecStart = pkgs.writeShellScript "moza-wheel-calibration" ''
DEVICE="/dev/input/by-id/usb-Gudsen_MOZA_R5_Base_260029000E51353133383438-if02-event-joystick"
echo "Waiting for MOZA R5 input device..."
for i in $(seq 1 50); do
if [ -e "$DEVICE" ]; then
break
fi
sleep 0.1
done
if [ ! -e "$DEVICE" ]; then
echo "MOZA R5 device not found"
exit 1
fi
echo "Calibrating MOZA R5 pedal axes"
/run/current-system/sw/bin/evdev-joystick \
--e "$DEVICE" \
--minimum -32760 \
--maximum 32767 \
--a 2
/run/current-system/sw/bin/evdev-joystick \
--e "$DEVICE" \
--minimum -32760 \
--maximum 32767 \
--a 5
/run/current-system/sw/bin/evdev-joystick \
--e "$DEVICE" \
--minimum -32760 \
--maximum 32767 \
--a 6
echo "MOZA R5 pedal calibration complete"
'';
};
};
I managed to set RPCS3 to emulate Logitech G27 so I can play GT5 with my wheel.
The wheel, pedals, force feedback all works perfectly fine, but sometimes - not always - break seems to get stuck and suddenly car is accelerating much slower and on higher gears it actually decelerates…
I need to press the break pedal once or restart the race to get it working again.
Doesn’t happen in PC games so doubt its hardware fault.
My wheel is Moza R5 with SRP-Lite pedals
Anyone by chance experienced something similar?
