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turbotwist 2 choice - USB vs PS/2

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FrizzleFried:
...and the bigger the knob (for example - Big Blue),  the MORE sensitive you want to make it...right?  Any estimate on about how much (percentage wise) to account for Big Blue?

This is a very interesting project to undertake.  I imagine it would be difficult finding out how many apertures each game has and how they are translated...

ahofle:
I can understand how the size of the knob would affect the feel of the game, but I'm not seeing how it would affect the sensitivity setting.  One 360 degree rotation is 360 degrees no matter how big your knob is.   :laugh2:

RandyT:

--- Quote from: FrizzleFried on February 07, 2007, 06:23:04 pm ---...and the bigger the knob (for example - Big Blue),  the MORE sensitive you want to make it...right?  Any estimate on about how much (percentage wise) to account for Big Blue?

--- End quote ---

That will depend on the game in question.  Many games had different knob sizes.  The way you would figure this out would be to use a ratio based on the difference of the diameter of the original and the diameter of "Big Blue."  So if the original game had a knob that was 25% smaller, you would want to add 25% to the number of "ticks" (transitions, whatever you want to call it) of the original game and then do the rest of the math.

Here are two practical examples based on things we already know;

Tempest:

Big Blue is 1.75" in diameter.  Tempest used, IIRC, a knob with a grip diameter of 1.25".  This means that Big Blue is 40% larger than the original.  Tempest used a 72 aperture encoder at 1x, so the number is modified to 100.8 transitions (72 x 1.4)

The TT2 has a resolution of 1200 transitions so the sensitivity setting should be very close to 8 (rounded down) for a similar feel to the original (100.8 / 1200).


DOH

Big Blue is 1.75" in diameter.  DOH used, IIRC, a knob with a grip diameter of 1.5625".  This means that Big Blue is 12% larger than the original.  DOH used an encoder system with 486 effective apertures at 2x, for 972 transitions, so the number is modified to 1088.64 transitions (972 x 1.12)

The TT2 has a resolution of 1200 transitions so the sensitivity setting should be very close to 91 (rounded up) for a similar feel to the original (1088.64 / 1200).


Make sense?


--- Quote ---This is a very interesting project to undertake.  I imagine it would be difficult finding out how many apertures each game has and how they are translated...

--- End quote ---

It just requires individuals who have access to the original controls / games to provide the information to someone like Derrick Renaud, who I am sure can take it to the next step.

RandyT

RandyT:

--- Quote from: ahofle on February 07, 2007, 06:33:47 pm ---I can understand how the size of the knob would affect the feel of the game, but I'm not seeing how it would affect the sensitivity setting.  One 360 degree rotation is 360 degrees no matter how big your knob is.   :laugh2:

--- End quote ---

We're still talking spinners, right?   :D

In any event, unless you have a swivel in your wrist, you will play a game by running the outside surface of the knob through your fingertips.  The larger the diameter, the more surface inches that need to travel through your fingers.  Increasing the sensitivity will bring this distance back to where it was with the original sized knob.

To anyone doubting this, try the numbers I came up with in the last post with your Big Blue and TT2.  How does it feel?  Like you remember?

RandyT

FrizzleFried:
Well hell...I guess we just need to get all the folks out there with spinner arcade CP's to count the number of "ticks" on each controller...the hard part,  I'd imagine,  is determining if they are running 1x, 2x, 4x, etc.

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