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LEDWiz, LED BLinky and IPAC4 issues?

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RandyT:

--- Quote from: drventure on January 12, 2011, 08:39:07 am ---One question. Is it possible that if the external PS is underpowered, the LEDWiz would then basically try to draw power from the USB port?

--- End quote ---

No, not possible.  The LED-Wiz switches the ground lines, so it's not possible for it to pull any current, other than what it uses to run the controller, through the USB power unless you have tapped your power source specifically from that terminal...which you said you haven't. 

Try relocating some things to make sure it's not an electrical noise issue.  Also, verify that the other items on the USB power aren't pulling more than you think they are, and that the power supplies are putting out what they are supposed to.

Also check your wiring.  Make sure there isn't a dead short somewhere that gets activated when you turn on that particular output.

drventure:
@Nephasth

Lessee.
2 trackballs
2 U360's
Turbotwist spinner
Wingman flightstick
IPac4
LEDWiz32
LEDWiz16
2 PS3 Wireless guitar dongles
PS2 to PC Dual port adapter for dance pads
2 external ports (ie extender cables that run over to external ports on the sides of the CP, generally not connected to anything but I do connect game pads or XBOX drum set).

so that's 14 devices.
I have 2 7port hubs, and a 4 port, so 18 ports total but 2 are taken chaining them together, so 16 total.


@Randy
No, power is definitely not coming from the USB 5v line here. It's from a wallwart.

A short is entirely a possibility, although, I'd have thought that if it was a particular output shorted, that if I lit that individual LED with LEDBlinky, it'd have caused issues. So far, that hasn't seemed to happen. i can light any one light (or various combinations) and not have issues, but when I try to light them all, or most, things start going nuts.

I'm also going to double check all the PS's and make sure they are putting out what they're rated.

Thanks again for the suggestions!

Nephasth:
I would suggest adding a USB PCI card to your computer to at least eliminate the USB hub daisy chain. Have each hub connected directly to the computer. I would also have each LEDWiz connected directly to the computer if you can. Just for S&G's, try moving your LEDWiz USB connections to the hub connected directly to the computer.

drventure:
It'd be tough to connect them direct to the PC because of the way my cab is setup (it's not quite a normal Mame cab  ;) )

But I'll try swapping around the LEDWiz to different hubs and disconnecting hubs to see if I can narrow down the circumstances under which things go south.

Thanks for the ideas!

arzoo:
drv
When did the problem start happening - recently or always? Just thinking that maybe something changed with your setup (hardware or software) that could help narrow down the cause.

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