Driving Force Control Board

[xptical]

Hi all,

I have 2 wheels; DFGT and an old Driving Force (blue grips).

Somewhere in a move, I lost the DFGT pedals (D-SUB DB-9 connector). I don't see an easy way to connect the old pedals (RJ-11 styled connector) to the new wheel. I had been breaking out both wheels. Driving with one and using the other's pedals.

Last night, I figured I'd just pull the control board from the DF and put it in a project enclosure to make it a bit easier on storage.

The problem is that the board must be expecting normal open (NO) on buttons 1~10 while buttons 11 and 12 expect normal close (NC) conditions.

Has anyone looked at this board in enough detail to tell me what header pins to short for those buttons?

Or maybe there is a way to adapt the old pedals to the new wheel? FYI, the old pedals use a 2-wire pot with no input for voltage. The wiring diagrams I have found say that the DFGT expects a 3-wire pot with common +5v and ground.

Thanks in advance.


The two paddles on the wheel were the culprit. I needed to solder in a 50K and 10 ohm resistor to the header.

 

[sesselpupser]

A pot with two connectors is known as a rheostat, it's a true variable resistor in that they vary the resistance instead of working like a variable voltage divider, which is what a pot does. This would imply that the DF has internal components to convert the rheostat's output into an analogue voltage while the DFGT, as far as I know, uses its microcontroller's built-in ADC to read the pot wiper voltage directly.

I've never tried to convert a rheostat's output into what you'd expect to see from a pot and I'm also typically quite slow, today is an especially slow day so I wouldn't know where to even begin. It's pretty straightforward Ohm's law stuff, though. I wonder if a rheostat could be used as a transistor base biasing resistor so you could use the collector voltage as your wiper output? I have no idea.