Author Topic: Disconnect ground from a pin header  (Read 5611 times)

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Offline DavidDLC

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Disconnect ground from a pin header
« on: February 22, 2012, 05:37:10 am »
I have one pin of a header connector connected to ground I have not found a way to disassociate it and connect it to a different net.

How is this done ?

David.
 

Offline benemorius

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Re: Disconnect ground from a pin header
« Reply #1 on: February 22, 2012, 06:15:48 am »
Can you be more descriptive or perhaps just post a screenshot of what you're talking about? I'm sure you're not just asking how to delete a net between two pins.
 

Offline DavidDLC

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Re: Eagle -> Disconnect ground from a pin header
« Reply #2 on: March 16, 2012, 01:50:00 pm »
Sorry for the late response, that project was on hold, but I started to work again on it.

This is the pin I want to disconnect from ground.


David.
 

Offline chrome

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Re: Disconnect ground from a pin header
« Reply #3 on: March 16, 2012, 02:51:44 pm »
Uh, disconnect it in the schematic .... ?
 

Offline DavidDLC

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Re: Disconnect ground from a pin header
« Reply #4 on: March 16, 2012, 03:25:44 pm »
Well, no schematic for this.
 

Offline ejeffrey

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Re: Disconnect ground from a pin header
« Reply #5 on: March 16, 2012, 03:32:43 pm »
Then you have to change the name of the signal for the pad to something other than GND.  Rerun ratsnest and the poly fill should create the clearance.

Eagle without a schematic kind of sucks.  Depending on exactly what you do, you can end up changing then entire signal name (including the ground plane) instead of just moving the one pad to a new signal.  I don't remember the correct sequence.
 

Offline westfw

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Re: Disconnect ground from a pin header
« Reply #6 on: March 17, 2012, 12:48:45 am »
>> Eagle without a schematic kind of sucks.

Any PCB program without schematics kinda sucks...

Try this: draw a circle in the tRestrict and bRestrict around the pin that you are trying to disconnect.  Do a "ratsnest" command to re-evaluate the polygons.  This should prevent the polygon fill from reaching the pin, which will make EAGLE somewhat unhappy, and it will show an airwire between the pin and the nearest other GND node.  Use "delete" to delete the airwire.  Then delete the restrict layer circles...
 

Offline DavidDLC

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Re: Disconnect ground from a pin header
« Reply #7 on: March 17, 2012, 05:52:42 pm »
Westfw,

Thanks for the suggestion, it worked as you described. You are the man !

David.
 


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