touchdown fever optical rotary joystick (ikari like) spinner specs

[rockin_rick]

Does anyone know anything about the touchdown fever optical rotary joystick?  Like what the pinout of the spinner is?  How many pulses per revolution?  What the electrical specs are for the pulses (e.g. low pulses/high pulses)?  Can this be connected directly to a opti-pac or opti-wiz or TT2 opti-wiz?

Thanks,
Rick

[shorthair]

Man, that seems like a simpler design than the Happ....

[Crowquill]

Have you checked it against the wiring for an Ikari LS-30?

According to the manual that I found at crazykong.com, this joystick is SNK part number LS-40.  Surprisingly the manual doesn't give the pinouts though.

EDIT: Just noticed that in the Wiki it states that the Touchdown Fever sticks are actually optical. It also states this though:

The Touchdown Fever games used a Happ Optical rotary, which is basically a Happ Super with the encoder wheel and optics added to the bottom

Maybe Touchdown Fever 2 did, but that definitely doesn't look like a Super. It does match the pictures in the manual.

If that's the original wiring harness, Red and black should be 5V and Ground respectively leaving the other two to be the signal and clock wires. That makes sense as that would match the pinouts for the optical boards on Happ, Atari, and Wico trackballs.

[rockin_rick]

Thanks, I hadn't yet been able to track down a manual.  Also never heard of that site - there's some good stuff there...

I'm not sure about assuming the red and black, though.  Makes sense, but I've seen way too many games where red and black were not pos and gnd while some other colors were.

I'll try looking for LS40 info.

Rick

[Kremmit]

EDIT: Just noticed that in the Wiki it states that the Touchdown Fever sticks are actually optical. It also states this though:

The Touchdown Fever games used a Happ Optical rotary, which is basically a Happ Super with the encoder wheel and optics added to the bottom

Maybe Touchdown Fever 2 did, but that definitely doesn't look like a Super. It does match the pictures in the manual.

Wiki is now fixed.

[u_rebelscum]

Have you checked it against the wiring for an Ikari LS-30?

According to the manual that I found at crazykong.com, this joystick is SNK part number LS-40.  Surprisingly the manual doesn't give the pinouts though.

Hmm, the manual calls it "LS40 - 24", and the "standard" old-school optical rotary was called "loop 24".  I'm guessing these two are the same?

If that's the original wiring harness, Red and black should be 5V and Ground respectively leaving the other two to be the signal and clock wires. That makes sense as that would match the pinouts for the optical boards on Happ, Atari, and Wico trackballs.

Technical Note:  The "other two" wires in happ, atari & wico TB are not signal & clock, but x1 & x2 (or x & x').  There are two optical sensors per axis (often both in one case, though); one wire is the raw data from the first sensor, the other wire is the second.  I don't have the loop-24 stick, but happs optical rotary is like the TBs.
If it was actually "signal & clock" wires, which usually means direction & speed in optical sensors like these, extra processing would need to be done on the sensor board.  Which is why it was rarely done in arcade hardware.

Minor point, but the difference is why the mouse hacks are possible in all but a few sensor boards.

[rolins]

Did anyone figure out the pinout to this joystick? I want to try and connect this to a Cal .50 game.