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Nephasth:


--- Quote from: BobA on December 12, 2010, 02:08:58 am ---Answer 1: Both grounds are tied together, personally i split the buttons up in half and run each half of the control pnael per ground, daisy chained.

I differ on this one.   I use the  loop method going out from ground one to all the buttons and joystick switches and looping back to ground two.  This gives you fault protection in your circuit.   If you get a bad connection in the loop everything will still work as there is still a ground to every switch.

--- End quote ---

To each his own I guess. But if there is some sort of fault in the daisy chain, everything at the fault and onwards would not work, which makes it pretty easy to locate anyway. Back up grounds end up disguising problems.

ragnar:


--- Quote from: BobA on December 12, 2010, 02:08:58 am ---Answer 1: Both grounds are tied together, personally i split the buttons up in half and run each half of the control pnael per ground, daisy chained.

I differ on this one.   I use the  loop method going out from ground one to all the buttons and joystick switches and looping back to ground two.  This gives you fault protection in your circuit.   If you get a bad connection in the loop everything will still work as there is still a ground to every switch.

--- End quote ---

... depending on where the break is.

BobA:

Thats true.  If the break is at the switch terminal it will not work but anywhere else in the chain the ground will loop back.  Anyway a break at the switch terminal is easy to identify and fix.

DillonFoulds:

While BobA is dead on about the grounding loop being fault redundant, I am of the school of thought that it would hide potential issues down the road.

Personally, I just like the idea of load balancing the grounds. It's not like we're dealing with large voltages, or even hazardous amounts, it still seems nicer to split up the control panel in my eyes.

But in the end, it's down to whatever you're most comfortable doing. Put in the extra 15cm of wire and loop it all the way around if you want. It's your choice. Practicality of either application makes little difference, if your crimping is solid.

CheffoJeffo:

I'm with BobA on the grounding issue -- keeps the most stuff working until you get a chance to look at it, at which point you just disconnect one side of the ground loop to find out where the problem is.

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