Re: [PEDA] Address select jumper using 0R links...
11/09/2002 01:38:15, Damon Kelly [EMAIL PROTECTED] wrote: Can I have a 3 pad PCB footprint and only load a 2 terminal part? Will the PnP generator get confused? I've been known to cheat and place a zero-ohm resistor on top of the (no- fitted) 3-pin jumper. It can be fully described in the pickplace, so causes less grief than trying to be cunning (since, let's face it, cunning backfires too often...) Steve * Tracking #: C135E458AA65E5408E65A784574D99D53F0EB953 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Re: [PEDA] Address select jumper using 0R links...
A simple method I've used several times is to indicate on the schematic the two select resistors, calling them out as 0805s, then simply placed them such that the ends which are commoned on the schematic physically lie on top of each other with their bodies in-line. Selection is by loading one or the other footprint. I create a special 0805 Library part having no overlay lines at their ends, to reduce confusion for the assemblers. Note that the Component Placement Rules must be turned off (my default setup) or a special rule could possibly be created to allow a placement exception for these two parts. Pick and Place works normally. DRC sees them correctly, since their overlapping pads have the same net. Brian I need to select the address of a card using 0R (0805) links, and I want to create a footprint with 3 SM pads, and be able to specify the link be loaded 1-2 or 2-3, without having to manually edit the Pick and Place file. I don't mind using two different SCH components (since changing will happen rarely), or even two PCB footprints. Any ideas? Can I have a 3 pad PCB footprint and only load a 2 terminal part? Will the PnP generator get confused? Damon Kelly Hardware Engineer * Tracking #: C1202B4B1ED77546B73B3AF7DCF053DCA6A7A7AB * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Re: [PEDA] Address select jumper using 0R links...
Thanks, Steve and Brian. Yes, I came to the same solution late yesterday, after giving up on cunning solutions. I was trying to reduce the number of resistor symbols on the schematic, but I guess I'll just have to make do... As cunning as fox that graduated from Cunning University or words to that effect, said Blackadder. Damon Kelly Hardware Engineer -Original Message- From: Brian Sherer [mailto:[EMAIL PROTECTED]] Sent: Thursday, 12 September 2002 00:30 To: Protel EDA Forum Subject: Re: [PEDA] Address select jumper using 0R links... A simple method I've used several times is to indicate on the schematic the two select resistors, calling them out as 0805s, then simply placed them such that the ends which are commoned on the schematic physically lie on top of each other with their bodies in-line. Selection is by loading one or the other footprint. I create a special 0805 Library part having no overlay lines at their ends, to reduce confusion for the assemblers. Note that the Component Placement Rules must be turned off (my default setup) or a special rule could possibly be created to allow a placement exception for these two parts. Pick and Place works normally. DRC sees them correctly, since their overlapping pads have the same net. Brian I need to select the address of a card using 0R (0805) links, and I want to create a footprint with 3 SM pads, and be able to specify the link be loaded 1-2 or 2-3, without having to manually edit the Pick and Place file. I don't mind using two different SCH components (since changing will happen rarely), or even two PCB footprints. Any ideas? Can I have a 3 pad PCB footprint and only load a 2 terminal part? Will the PnP generator get confused? Damon Kelly Hardware Engineer ** ** * Tracking #: C1202B4B1ED77546B73B3AF7DCF053DCA6A7A7AB * ** ** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
[PEDA] Address select jumper using 0R links...
I need to select the address of a card using 0R (0805) links, and I want to create a footprint with 3 SM pads, and be able to specify the link be loaded 1-2 or 2-3, without having to manually edit the Pick and Place file. I don't mind using two different SCH components (since changing will happen rarely), or even two PCB footprints. Any ideas? Can I have a 3 pad PCB footprint and only load a 2 terminal part? Will the PnP generator get confused? Damon Kelly Hardware Engineer * Tracking #: CA875FA2F7A34F40998D05ED1D25A06AEFE46A80 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
