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Logitech MOMO Racing wheel hack w/FFB.

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msilveira:
Hello there!

Thanks for all these info! Much appreciated!

I have some info/notes to add:

1.) How to guarantee the alignment of the wheel? Some Locks must be implemented for calibration, right?
This video at 0:55


2.) I have hacked the drivers to get MOMO identified as Driving Force GT, thus, 900⁰ !

Some lame videos of what I managed to do about a year ago ( never got the wheel out of the box again since then! ):





And here is a discussion about the desired 900⁰ mod: http://www.insidesimracing.tv/forums/viewtopic.php?f=108&t=1451


Registry changes. Not sure if I tried to change the .INF files from the installer. IIRC, If you change the .inf files directly and try to install, It won't work, or won't install, won't recognize the wheel. Whatever reason it is, it simply didn't work. ( Haven't spent much time trying though... )

--- Quote ---
Registry changes, don't use the quote mark: ( NOT sure wether it is necessary to do all these changes... )

HKEY_CLASSES_ROOT\CLSID\{6015095D-C4AE-11D1-B59B-00A0C9971EFC}
Change value of (default) REG_SZ from "Logitech MOMO Force Game Controller Properties DLL" to "Logitech Driving Force Pro Game Controller Properties DLL"

HKEY_CURRENT_USER\System\CurrentControlSet\Control\MediaProperties\PrivateProperties\Joystick\OEM\VID_046D&PID_CA03
Change OEMData from "41 00 08 10 0a 00 00 00" to "01 43 00 08 10 0e 00 00 00"
Change OEMName from "Logitech MOMO Racing USB" to "Logitech Driving Force Pro USB"
Change ConfigCLSID from "{60150961-C4AE-11D1-B59B-00A0C9971EFC}" to "{6015096A-C4AE-11D1-B59B-00A0C9971EFC}"


--- End quote ---

When the time is right, I'll put it all together :)
Long time...

bberger:

--- Quote from: BadMouth on January 23, 2012, 10:21:58 am ---
--- Quote from: perriace on January 22, 2012, 07:55:57 pm ---Would you also know how to do this with a 900 degree Logitech Driving Force GT ?

--- End quote ---

It should work the same way, but use a much higher resolution encoder.
The driving force probably has the same gearing, pinouts, etc as the G27 that I tinkered with in the last two posts of this threas:
http://forum.arcadecontrols.com/index.php?topic=112330.0
I estimated around 3,000CPR if the new wheel was limited to 270 degrees,
but I was wrong about the MOMO the first time around and I'm probably wrong about the G27.
It comes down to how many lines will pass by the sensor when the wheel is turned from lock to lock.
I don't have the equipment to test that, but I've been tempted to buy it.

My MOMO hack worked fine on my test bench, but I'm having problems with it in my cab.
The wheel becomes uncalibrated when there is a lot of shaking feedback or when it is jerked hard left.
I'm pretty sure it was caused by the disc inside the optical encoder slipping which is a problem with the encoder, not the hack.
But it may have also been caused by vibration causing the sensor to think the disc was turning when it wasn't.
(it was an older used industrial encoder)
I disassembled my optical encoder and epoxied the disc in place after roughing up all surfaces, but it didn't work when I put it back together.  ???
So now I'm deciding on whether to order a new encoder or hack a pot based wheel.  A driving force EX is already on the way.

I'd still like to figure out the G27 hack eventually so all pedals, shifter, & buttons would be seen as one controller.
There is a wheel in Japan called the Frex GP that uses a G27 pcb with a high resolution optical encoder, so it is possible.
That wheel still spins 900 degrees, so it's probably only a third of the resolution of the 3,000CPR that I estimated above.

So long answer short, yes it's possible, but I can't give you specifics and it would require a lot of experimenting and $$$ on your part to work out the kinks.

--- End quote ---

I'm extremely sorry for bumping this thread, but I wrote a reply to another thread specific to the Frex device. I really need to figure out the correct resolution as I have an old version using a Immersion FFB Controller and I want to swap it for a G27 PCB:
http://forum.arcadecontrols.com/index.php/topic,112330.msg1399077.html#msg1399077

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