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| MOD: Suzo Universal Inductive |
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| specfire:
Well, the end of the shaft is not a magnet, it is ferrite I suspect that the main coil around the center opening on the PCB is generating a constant oscillation (AC current). This then temporarily "magnetizes" the ferrite ring on the end of the joystick shaft. As the magnetized ferrite ring oscillates, a current is then induced into one or more of the eight smaller coils. These smaller coils seem to be set in pairs corresponding to Top, Bottom, Right, Left. Comparisons are then made between the current strength in each coil, thereby determining the exact joystick position. The adjustment pot simply cuts off the diagonal signal below a certain (adjustable) threshold. This results in a range of diagonals from very wide to none. Any ferrous compound, such as a steel joystick shaft, would have the same effect but would be MUCH less sensitive and the result might be a narrower adjustment range, less sensitive movement, or the joystick not "engaging" until nearer the maximum throw. If kowal is going for a single setting for just 2D fighters and shoot-em up's, then the loss in sensitivity might be OK. If you are going for a fully adjustable "do-it-all" stick, then I don't think this mod would be that desireable. spec |
| kowal:
--- Quote from: specfire on May 16, 2006, 08:04:55 pm ---If kowal is going for a single setting for just 2D fighters and shoot-em up's, then the loss in sensitivity might be OK --- End quote --- To shumps joystick should be sensitivity. sensitivity and short throw this the most important parameters near shumps. Therefore I do not play on joystick Sanwa, they are not sensitivity --- Quote from: specfire on May 16, 2006, 08:04:55 pm ---]If you are going for a fully adjustable "do-it-all" stick, then I don't think this mod would be that desireable --- End quote --- I made modifications to to exchange ugly stick, I did not want to alter parameters. After adjusting of potentiometers he acts identically how on original stick, engagement follows on 3 degree. |
| specfire:
I'm glad you were able to adjust the other pots so that the overall action is the same. It does seem strange to me that the same performance can be achieved, since the ferrite ring added cost to the production of these sticks. If it didn't add additional function, why did Suzo put a ferrite ring on in the first place? |
| kowal:
Ring should be theoretically. Ring assures better balancing-pole. Magnetical field acts evenly. If we will take off him this we lose this balancing-pole. I without ring had anomalies (asymmetric engagement, bad diagonals). It been possible balancing-pole to regain-regulating potentiometers. Ring should be. Possible it is however adjusting joystick to he acted without ring. |
| Grasshopper:
Kowal, I've just been checking Farnell's site and they sell a wide range of ferrite rings (see here). It occurs to me that you could change the design of your replacement handles so that they can be fitted with one of Farnell's ferrite rings. Do you have the equivalent of Farnell in Poland? |
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