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  • IvensB commented on RudyD1's instructable Building a Neo Geo Stick USB Adapter7 months ago
    Building a Neo Geo Stick USB Adapter

    1/ Is it the same if you plug one button at a time to the encoder?R - Yes. For example, if I plug the button 2, only that will be always on and so on. And just to note, they turn on only if I have a GND plugged (what I guess be a normal comportament).2/ Do you have a multimeter? If yes, with GND to multimeter, are each buttons' pin beeping or some? Showing that a button si actually pressed for some reason?R - Here, we have a mistery. If I use a multimeter on the pins (of the 15 pins socket) with the controller plugged, I DON'T get a beep, even if I press the corresponding button on the pad. But, the dpad works well. So, in the project, I have the buttons always on, but with a multimeter, without the pcb, I have the buttons always off, even if pressed (except the dpad, that like I said, ...

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    1/ Is it the same if you plug one button at a time to the encoder?R - Yes. For example, if I plug the button 2, only that will be always on and so on. And just to note, they turn on only if I have a GND plugged (what I guess be a normal comportament).2/ Do you have a multimeter? If yes, with GND to multimeter, are each buttons' pin beeping or some? Showing that a button si actually pressed for some reason?R - Here, we have a mistery. If I use a multimeter on the pins (of the 15 pins socket) with the controller plugged, I DON'T get a beep, even if I press the corresponding button on the pad. But, the dpad works well. So, in the project, I have the buttons always on, but with a multimeter, without the pcb, I have the buttons always off, even if pressed (except the dpad, that like I said, works fine with the pcb or not).3/ Was the pad hacked? Maybe check internal PCB?R - The pad was never opened, so I can say that was not hacked.4/ If you have access to another controller, is it same result?R - Unfortunately I don't have another controller =(5/ Are the 4 directions of stick working ok?R - Perfectly! In fact, if I plug a cable of stick, for example, the left on the button 3 of the pcb, on the Windows, the button will stay off until I push the stick to the left. Working great.6/ I'm not sure from the pic, but can you confirm pinout? Like not inverting pins GND/VCC on DB-25 side?R - I checked twice, but, who knows. I'll send some pictures.

    About MODE / TURBO / CLEAR / AUTO, I tested when I received the PCB, just to see. Everything works fine, the turbo does its job, it modifies the LEDs. Always working like a charm. =/Trying to use the + 5V pin looks good, but before that I'll try something else.I'm at work, so when I go home, I'll test a theory.Imagine that the controller works with the GND and positive on the sticks, the normal behavior and so, work well.Now imagine that the buttons work differently, like, the positive is always on and the GND is from another source, not the same as the GND of the sticks, and the GND is the one who sends the command when I press the button. I do not know if I explained it clearly, but it is the only explanation. So if the positive is always on and I share the GND of the sticks, that ar...

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    About MODE / TURBO / CLEAR / AUTO, I tested when I received the PCB, just to see. Everything works fine, the turbo does its job, it modifies the LEDs. Always working like a charm. =/Trying to use the + 5V pin looks good, but before that I'll try something else.I'm at work, so when I go home, I'll test a theory.Imagine that the controller works with the GND and positive on the sticks, the normal behavior and so, work well.Now imagine that the buttons work differently, like, the positive is always on and the GND is from another source, not the same as the GND of the sticks, and the GND is the one who sends the command when I press the button. I do not know if I explained it clearly, but it is the only explanation. So if the positive is always on and I share the GND of the sticks, that are always on too, this explains the always on buttons.If I find out that this is a true then I have a "problem" because I will need to cut the GND share on the PCB. So I need to find the "GND" pings and "positive" pins of the buttons to use then. Maybe it's a mistake, but I'll investigate better when I get home.I'll give you feedback after that. =)PS.: sorry for the bad english, that's not my native language =P

    This information about the capacitor is very valuable.I will disassemble the controller to check the theory on the two groundings, I take it to check the capacitor too.Once again, thank you for your patience and your time.After checking everything, I'll come back with my conclusions. I hope to have good news!

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  • IvensB followed RudyD17 months ago
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  • IvensB commented on RudyD1's instructable Building a Neo Geo Stick USB Adapter7 months ago
    Building a Neo Geo Stick USB Adapter

    Yes, at my first tests, I haven't soldered two GND, but with that problems I started to try desesperated scenarios, even though I knew it would have no effect, hehe.Anyway, follow the picture.Thanks in advance for the patience.

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