Making fight sticks for original xbox. result: a lot of jumping


#1

Hey! I’m working on a small project of making fight sticks for the original Xbox, using Microsoft s-type controllers. I have gotten a few right the first time, but this fourth one has been a recurring nightmare! I have probably gone through four failed attempts and each seems to fail in the same manner: when plugged into the Xbox they seem to be sending a constant [up] signal. When the controller is plugged into a different machine outside of any fight stick apparatus it works fine, but as soon as I bring it to my test machine, it seems to fail. I do need to test without any microswitches attached, but it seems that I am consistently doing something wrong on the controller as it does not matter which port I am in, nor are the results replicated with a different controller PCB in the same apparatus.

Has anyone else experienced similar issues? I apologize if I missed a key post which may lead me to success, but I have been googling up frustration all week, and I’m hoping someone in this community might be able to assist my search.

thank you, in advance, for your help–
I will be back soon :slight_smile:


#2

Sounds like your up signal is hitting ground.


#3

it does sound like that. but my ohmmeter disagrees. Note, it works fine on an unmodded xbox. Is it possible that the original dashboard has a filter to take out erroneous signals?


#4

Any chance it’s the analog and it’s not calibrating right for some reason?


#5

My suggestion, as always, for these sorts of threads is as many pics of your wiring job as possible.