Force Feedback Problem

[AWB12]

New user here. I just got a new Open FFboard. I'm trying to trigger a force feedback impulse on a steering wheel using Unity3D. So far, I haven't had any success with it.

So far, I have tried the following:

SendFFBWriteCommand(0xA1, 0x00, 0x01, 0, 0x0, 1); // main.0.ffbactive = 1
SendFFBWriteCommand(0xA1, 0x00, 0xA01, 0, 0x0, 255); // axis.0.power = 255
SendFFBWriteCommand(0xA1, 0x00, 0xA01, 0, 0xC, 255); // axis.0.fxratio = 255

const ulong effectIndex = 0;

SendFFBWriteCommand(0xA1, 0x00, 0xA03, 0, 0x1, 1); // fxm.0.reset = 1
SendFFBWriteCommand(0xA1, 0x00, 0xA03, 0, 0x2, 0); // fxm.0.new = 0 (Constant)

SendFFBWriteCommand(0xA1, 0x03, 0xA03, 0, 0x4, (ulong)strength, effectIndex); // fxm.0.mag = 30000
SendFFBWriteCommand(0xA1, 0x03, 0xA03, 0, 0x7, (ulong)durationMs, effectIndex); // fxm.0.duration = 200
SendFFBWriteCommand(0xA1, 0x03, 0xA03, 0, 0xC, 32767, effectIndex); // fxm.0.axisgain = 32767

SendFFBWriteCommand(0xA1, 0x03, 0xA03, 0, 0x5, 1, effectIndex); // fxm.0.state = 1

new Thread(() =>
{
Thread.Sleep(durationMs + 50);
SendFFBWriteCommand(0xA1, 0x03, 0xA03, 0, 0x5, 0, effectIndex); // fxm.0.state = 0
}).Start();

Result: Nothing

Anyone got any ideas?

[Ultrawipf]

No idea about unity. Does the python example work? Maybe something with the HID implementation?

[AWB12]

No idea about python. But I once tried to start hidlib_example.py.
I got back 8571 and True.

After that, I started hid_ffb_example. After a few seconds, I got back:

Type: 13, Class: 2563.0: cmd: 1, val: 0, addr: 0
Type: 13, Class: 2563.0: cmd: 0, val: 1, addr: 0
Got new effect at index 1
Type: 13, Class: 2563.0: cmd: 2, val: 1, addr: 0
[1]
Type: 13, Class: 2563.0: cmd: 5, val: 1, addr: 1
Type: 13, Class: 2563.0: cmd: 4, val: 2000, addr: 1
Type: 13, Class: 2563.0: cmd: 4, val: -2000, addr: 1
Type: 13, Class: 2563.0: cmd: 4, val: 0, addr: 1
Type: 13, Class: 2563.0: cmd: 5, val: 0, addr: 1
Got new effect at index 8
Type: 13, Class: 2563.0: cmd: 2, val: 8, addr: 0
[1, 8]
Type: 13, Class: 2563.0: cmd: 11, val: 8000, addr: 8
Type: 13, Class: 2563.0: cmd: 5, val: 1, addr: 8
Type: 13, Class: 2563.0: cmd: 8, val: 10000, addr: 8
Type: 13, Class: 2563.0: cmd: 0, val: 0, addr: 0

However, I did not see or feel any response on the steering wheel.

At least I managed to replicate hidlib_example.py in Unity. So I assume I'm not doing anything fundamentally wrong.
However, hid_ffb_example still doesn't do anything.
I even increased the force from 2000 to 20000 — but there's no noticeable movement.

[Ultrawipf]

That looks correct.
Check if there may be some other issue in the configuration of the FFBoard that might prevent it from generating any force at all like:

• Emergency stop triggered
• Mainclass set to FFB Ext
• Motor driver setup failed or not configured correctly for the motor+encoder
• Calibration failed if using TMC4671
• Communication issues to motor driver if using ODrive