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What's the correct way to share pins on a symbol/footprint and have them connected electrically?

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bryan costanich 2 years ago

Hey folks, I have the following symbol/footprint combo: ![Screen Shot 2021-09-16 at 11.08.44 PM.png](//image.easyeda.com/pullimage/ksd4gmYdoPkAvYtiaXDw4qgKdmOIcbSia7ZS8iNP.png) ![Screen Shot 2021-09-16 at 11.08.36 PM.png](//image.easyeda.com/pullimage/NlSM4UTnsrWt4Co6DERcdCqxsHKpz5wMU39lvITo.png) Note that pin `6` is actually many pins. They're connected together on the part themselves, so they don't need to be connected on the footprint. So i need to use as in the following: ![Screen Shot 2021-09-16 at 11.09.01 PM.png](//image.easyeda.com/pullimage/OkKhr68SjbAIwKlDo0bbE2EvxX0y3cbxTO3ujMlx.png) But that leaves me with the following ratlines: ![Screen Shot 2021-09-16 at 11.09.12 PM.png](//image.easyeda.com/pullimage/1sA1soleH0V0njcBAj9kX3e4GD4VJOAipA27pWFd.png) What's the correct way to set that up?

Chrome 93.0.4577.63 OS X 10_15_7 EasyEDA 6.4.20.6

Comments

UserSupport 2 years ago

You need to R6 if not convert to PCB

Firefox 92.0 Windows 10 EasyEDA 6.4.25

andyfierman 2 years ago

@UserSupport, @bryan_6020, This is a perfect demonstration of why I asked for this feature: [https://easyeda.com/forum/topic/Not-Connected-feature-for-unconnected-pads-in-Footprints-with-multuple-same-numbered-pads-on-PCB-03f61e1a8ed342b7a5be79e0dab765e5](https://easyeda.com/forum/topic/Not-Connected-feature-for-unconnected-pads-in-Footprints-with-multuple-same-numbered-pads-on-PCB-03f61e1a8ed342b7a5be79e0dab765e5)

Chrome 91.0.4472.101 AndroidOS 10 EasyEDA 6.4.25

bryan costanich 2 years ago

@UserSupport "You need to R6 if not convert to PCB" what does that even mean? can you reword it or elaborate, please?

Chrome 93.0.4577.63 OS X 10_15_7 EasyEDA 6.4.20.6

UserSupport 2 years ago

Hi what do you want for this issue? I see it is correct, the pads have the same net has ratlines, you need to route them.

Firefox 92.0 Windows 10 EasyEDA 6.4.25

andyfierman 2 years ago

@UserSupport, If the symbol showed every pin separately then the Schematic "No Connect" "X" symbol could be placed on each pin that the user wishes to leave floating. That would solve the problem of leaving the pads unconnected in the in the PCB. In this symbol however, there is only one pin 6 that represents several pads on the Footprint, which is ok and a tidy way to represent the part. There may be cases where the user only needs to connect to one of the multiple internally connected pads and with symbols like this, my suggestion for a PCB "No Connect" tool would solve the problem in the PCB.

Chrome 91.0.4472.101 AndroidOS 10 EasyEDA 6.4.21

UserSupport 2 years ago

@andyfierman symbol doesn't support the pin number duplicated, it will make the network shorted if two differrent net connect with these pins.

Firefox 92.0 Windows 10 EasyEDA 6.4.25

andyfierman 2 years ago

@UserSupport, I understand that. My proposal does not require duplicate numbered pins on the symbol. It only asks for something that identifies selected pads with duplicated numbers on a Footprint as not connected in the PCB Editor.

Chrome 91.0.4472.101 AndroidOS 10 EasyEDA 6.4.21

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