Main > Main Forum

Unused axes

<< < (3/3)

BadMouth:
Your best move would probably be to email Andy at ultimarc.

I have no experience with an A-Pac, but I'll try to help anyway.

Have you calibrated the joystick under game controllers in the windows control panel?

What OS are you running? .
It's a pain to find the calibration screen in Win7, you have to right click on the controller to get the settings window.
If you left click on the controller, it will just bring up the hardware properties.  :-\

milhouse:
Its XP 64bit.  I've wired the unused axes to ground which works temporarily, but if I have to recalibrate, the problem returns.  Its weird because its just spikes now and again in all the rotational axes.  I think I will just have to learn to live with it.  I was hoping there was software that would allow me to ignore the axes, but it doesn't seem like it.

BadMouth:

--- Quote from: milhouse on April 27, 2012, 10:03:40 am ---Its XP 64bit.  I've wired the unused axes to ground which works temporarily, but if I have to recalibrate, the problem returns.  Its weird because its just spikes now and again in all the rotational axes.  I think I will just have to learn to live with it.  I was hoping there was software that would allow me to ignore the axes, but it doesn't seem like it.
--- End quote ---

If the axis that's connected to pots doesn't do that, then it might be worthwhile to buy a couple cheap pots at radio shack and hook up to the unused axis.

Mysterioii:

--- Quote from: BadMouth on April 27, 2012, 10:13:02 am ---
--- Quote from: milhouse on April 27, 2012, 10:03:40 am ---Its XP 64bit.  I've wired the unused axes to ground which works temporarily, but if I have to recalibrate, the problem returns.  Its weird because its just spikes now and again in all the rotational axes.  I think I will just have to learn to live with it.  I was hoping there was software that would allow me to ignore the axes, but it doesn't seem like it.
--- End quote ---

If the axis that's connected to pots doesn't do that, then it might be worthwhile to buy a couple cheap pots at radio shack and hook up to the unused axis.

--- End quote ---

I just looked at the page for the A-Pac.  Honestly tying them to ground sounds like it should be fine but that calibration procedure might make it see teeny tiny fluctuations in voltage, and the least significant bit of an A/D conversion isn't that reliable so it might be picking up some noise there.  Pots are just variable voltage dividers so if you have any spare resistors lying around you might just put one resistor between 1UP and 1DOWN and another between 1DOWN and GND.  That would look the same as a pot sitting at a fixed position.  Values shouldn't really matter that much.  Even then though if the A/D conversions have flicker in the LSB's then you might see the same problem.

His diagram confuses me a little.  A pot usually has one side connected to ground and one side connected to whatever voltage you want to consider high (say +5V).  The center leg sweeps and will always measure a voltage between the two.  His diagram has one leg going to GND, but the other two going to pairs like left/right or up/down.  You've only got one changing value for a pot so calibration just determines what you want to consider fully left (or up or whatever) and fully right (down etc).  Whatever value you come up with, if you're 30% "UP" then you're 70% "DOWN".  I wonder if on the pins he's labeled as "up/down" one is really tied high and the other is the actual analog input.

Navigation

[0] Message Index

[*] Previous page

Go to full version