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Thread: PS3 NeGcon - Can it be done???

  1. #51
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    not gonna work that way, unfortunately. THe NeGcon's stock pot has a very long swing, and then you set the max-travel point in-game with games that recognize its center/dead/stationary point. There might be a way around that, but it would require some crazy kind of work. I think it might be a kind of trial-and-error thing at this point, and work with one obstacle at a time lol

  2. #52
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    Quote Originally Posted by AG-wolf View Post
    not gonna work that way, unfortunately. THe NeGcon's stock pot has a very long swing, and then you set the max-travel point in-game with games that recognize its center/dead/stationary point. There might be a way around that, but it would require some crazy kind of work. I think it might be a kind of trial-and-error thing at this point, and work with one obstacle at a time lol
    What way isn't going to work? If the POT is changed with one that has a shorter rotational angle it will 'sort of' work, but ya run the risk of damaging the POT and possibly the gears in the neGcon if the new POT is setup internally to have stops at the 90 degree marks, if it can travel the full 300 degrees, but the 10k is kept in the 90 degree range from center (5k to each side) then it will work without causing any damage. The POTs used on the controller's sticks have a much larger rotational angle than where the Resistive part of the element is, they work on a 45 degree angle, but can turn much further than that, the sticks design just doesn't let them and the 10k is kept in that 45 degree area.

    Since the PS3 doesn't support the controller there is no way to set the dead zone and max range of the twisting in game, so that's not even an option, nor is it an option with a POT as that would take a variable, variable resistor.

    About the only real way to go about it is to leave the POT that's in there, then use a PIC and DAC to take that Analog signal, convert it to digital so ya can do whatever ya need to with it, adjust the dead zone and set the max range, then go back to Analog via the DAC. That's a mess, and would require a good deal of coding to get done up, but it's doable and would give ya control over the twisting setting the same as an in game option would, but if you're going to go to that extent ya may as well code up the thing to just recognize the entire controller and just make up an adapter to interface with a PS3 controller.

    As it is right now it takes around 200 degrees of rotation from a full left turn to a full right one with the 10k POT in there, and the only way to lower that staying in the hardware realm is to change the gearing or use a POT with a different rotational angle, but both methods cause the problem of being able to twist the neGcon further than the POT can, so while it's an option, it's just not the best one.

  3. #53
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    My 90 degree pot 10k Turns the same amount as the negcon (the bar spin). So does this mean max turn is at 90, and the rest is nothing. This wouldn't damage the pot either.

    I think this is going to take alot of testing, and damaging alot of crap

    It's worth the effort if it works


    Just thinking here:

    1) max turn (if labeled) = max turn of potentiometer, even if the bar keeps spinning further

    2) nuber of K = How quickly it starts to turn

    Would this make sense?
    Last edited by JABBERJAW; 31st May 2009 at 04:36 PM.

  4. #54
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    You'll have to put the meter on them and see exactly how they work, there's just a lot of different tapers and layouts, but checking it with a meter will let ya know how it's really working for sure.

    Every other POT in the neGcon is a Log POT, even though the things are marked with a 'B' which is for Linear, so always check it, then check it again, and write down what it is and how it works versus the original 10k POT.

  5. #55
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    Have you tried the other pots in the negcon? I know they swing the same distance, but the max turn could be different, and the labeling (one of the numbers) on them is different as well, between the button,trigger, and twist. I think the trigger travels the least distance. It is possible here that the button pots might reach max in considerably less distance. I'll have to try this too. I didn't get to try it today. I have a HUGE mess to clean up right now, but am excited (until it fails) to try it. The number on the pot thing I got from the insides of the black negcon. I don't think these numbers were even written on the american one. Otherwise, I wouldn't have ever thought of trying it.

  6. #56
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    it would be a lot easier for a couple people at studio liverpool to just sit and make a patch for WOHD that can recognize a NeGcon with a USB adapter. lol

  7. #57
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    Quote Originally Posted by JABBERJAW View Post
    Have you tried the other pots in the negcon? I know they swing the same distance, but the max turn could be different, and the labeling (one of the numbers) on them is different as well, between the button,trigger, and twist. I think the trigger travels the least distance. It is possible here that the button pots might reach max in considerably less distance. I'll have to try this too. I didn't get to try it today. I have a HUGE mess to clean up right now, but am excited (until it fails) to try it. The number on the pot thing I got from the insides of the black negcon. I don't think these numbers were even written on the american one. Otherwise, I wouldn't have ever thought of trying it.

    The POTs on the Trigger and I/II buttons are Logarithmic, they have all 10k 'bunched up' close to one end of the POT, so it only has to turn a very short distance, and they don't start from the center point. The Twist POT is Linear, which means the 10k is spread over the entire travel of the POT and it's used as a voltage divider, so it sits at the mid point and goes + or - depending on which way it's turned. If you put a Log POT in place on a Linear one in this case (voltage divider) all you'll accomplish is making it turn in one direction on it's own since all of the Resistance is 'lopsided' in a Log POT, you'd have to twist it 9/10 of the way in one direction before it would center.

  8. #58
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    If you could set them up grinding opposite each other it would work then? If you got it to start at 0? out of my capability though.

  9. #59
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    sorry for double post, but possible breakthrough


    I tried the 10k 90 degree angle. I just turned the pot with my hand, and it seems there is almost no dead zone, and the max turn to either side is 45 degrees. This would mean the 90 degree angle is what this means, 45 to both sides. Also, the swing radius is the same as a regular negcon pot, and when turning past the 45 degree mark, it just stayed at max. This is also very good. I'm not sure where I got that pot out of. dohh!! wait, it might have been from a thrustmaster joystick, the twist handle one maybe

    I then tried a 50k and there was a huge dead zone, but when it turned it was smooth.

    I then tried a 1 meg from a paddle from the atari 2600. It worked, but there was a large dead zone

    I then tried the button pot from the negcon, and it does turn left and right. It seemed there was a dead zone, but it was smaller than the original negcon pot, not sure though, need to test further tonight. It also may be the longer one. the trigger has a smaller amount to turn before it is full.

    I still have the raccon one to test, but it does not swing far, and I am not sure what the k is on that

    I still have to try a different 5k one I found in another controller. This one is small though

    I still have to try a 5k larger one I found from radio shack

    there are some others as well, but they do not seem promising

    I am hopefully going to test more tonight

  10. #60
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    The last thing I tried was cutting the trace in the POT at dead center, setting up a 22k voltage divider and letting the POT then drop/raise it, that worked pretty good, maxed the turns at 45 and 45, but there's just about no dead zone at all and controlling the thing is a nightmare with it like that, works best with a 20k divider, but ya have to go close to 90 to get a full turn out of it, but the dead zone is better and ya don't go lurching back to the left after making a right.

    Good luck with trying out more POTs, I'm completely abandoning that whole idea until I can get with a coder to do this up the right way with a PIC/DAC setup so it has control over the max range as well as dead zone, this POT mess just isn't cutting it and IMHO isn't ever going too. The PIC/DAC will pretty much give control over the thing like the older in game menus did, just a ton more work to get that setup properly, but it'll pay off in the long run.

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