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Basic Wiring Question

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SirPoonga:


--- Quote from: javeryh on December 23, 2005, 01:39:03 pm ---Awesome picture - it's exactly what I'm going to do.  If you did go ahead and ground the left button does that mean that you can pinpoint where the bad connection is based solely on what button isn't working or is the only way to do that to ground each button individually?

--- End quote ---

Depends on how the ground broke.  Most of the time the connect comes off the spade on the button, so even without the loop as I described all other buttons will work.  However, if someone the wire broke or became unsoldered then it depends on how your grounds are wired.  If wired like the pic (which is from the ipac instructions page) then all buttons that would have gone through the break won't work.

Doing the loop as I suggested depends on what broke.  If the wire came unsoldered just that button won't work.  If the wire broke in between two buttons all buttons will still work as there is a way to get to ground.

Each way has its own benefits.  doing only one route to ground if something goes wrong it will be obvious, a bunch of stuff won't work.  The other route you may not realize something is wrong until you use the failed part, but wiith two paths to ground if one thing goes wrong it all doesn't.  It's a matter of preference on what you want to happen when something goes wrong.

javeryh:

Great!  Thanks for the info!

ChadTower:


--- Quote from: SirPoonga on December 23, 2005, 01:34:15 pm ---http://www.ultimarc.com/images/wiring.gif


--- Quote from: ChadTower on December 23, 2005, 01:29:22 pm ---Don't forget that in a daisy chain, if one connection breaks, they all break.

--- End quote ---
All behind the break.
--- End quote ---


BobA:

If you add another ground to the LH ground connection and take it to ground you will have a true loop and a single break will not disable you buttons.

M3talhead:

If it helps, I've included pics from my arcade project when I was building it. Notice in the first pic that all the black wires (grounds) are chained. This is done by inserting 2 wires into a single terminal connector and repeating the process until you've formed a complete chain from the furthest control, to your iPac.



The second picture shows how the positive leads are routed in order to complete the circuit for each switch.



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