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Right Turn Clyde - wheel problem
slider2732:
Simple controller problem, my steering wheel only goes right in MAME.
There are two wires (green and blue) that exit the Sega built controller section and that usually run to the wiring harness of Top Speed. Top Speed can make sense of it, MAME seemingly can't.
Am quite used to mouse hacks and even did a Happs trackball to PC conversion last year, but, either way I connect the 2 output wires, it goes right. Tried 2 different mice and actually the Happs hack itself by using the left/right wires..same deal, right only.
However, there do seem to be varying amounts of movement...and I do have a few spare mice, so will try a few more in case it's a 'gaps to light pulses' issue.
I would guess that Sega didn't build the original controller.
Anyone got any tips ?
Angry_Radish:
Is this an optical or analog wheel?
Either way, don't you need 3 wires instead of 2?
slider2732:
It's an optical, sorry not to mention.
The pinouts for Chase HQ (which I believe Top Speed follows) show a Centre connection on the harness for the wheel....but the wiring to the controller on the wheel is +5V, Ground, Green, Blue.
Interestingly, connecting the mouse feed affects the 2 LED's on the controller. Putting diodes on the outputs for 'output only' stops the feedback and restores the LED's to lighting for direction. However, I can't simply hack to the LED's and do it that way, cos they stay lit without wheel movement. Sometimes they are both lit, but it's not predictable, sometimes they flash around too.
When running the real arcade PCB the LED's do the same thing.
slider2732:
Oh, and, my mouse hacks in the past have only needed 2 wires (to the outer 2 of the IR reciever for left/right direction.
I'd have thought 3 as well, but it seems that's what the mouse already sorts out from the pulses.
slider2732:
FIXED! ;D
Hopefully of use to others who may have the same troubles -
The key to this was in the sensing. Normal mice have 1 IR receive for left/right and 1 for up/down. It would seem the logic onboard detects what does what for each receiver and that's how come the spacings in the holes of the plastic wheels get to be important.
So....went down to my basement and found an older mouse. It has seperate sensors on it for each direction. EX and RX were marked on the circuit board and tallied to senders and receivers, a total of 8 LED looking things.
I found which were the common 2 connections for the left/right and that left the data pulse 2 wires.
Soldered connections to these and YES! it works.
It was the wrong way around at first but that's sods law lol
The steering wheel is actually more responsive than I thought it would be...a driving pleasure :)