Schematic-vs-PCB Differences

Question

I am having a problem with connections on the schematic not following through to become nets on the layout drawing. Is this a common problem with EAGLE? I am using a standard library part and a part that I created, so it is possible that my part will simply not connect to the net. I had no problem making the connection on the schematic, though, so I don't understand why it doesn't connect on the PCB.

Any help would be appreciated.

Former Member · Answer

On 5/29/2012 7:49 AM, Paul Horst wrote: I am having a problem with connections on the schematic not following through to become nets on the layout drawing. Is this a common problem with EAGLE? I am using a standard library part and a part that I created, so it is possible that my part will simply not connect to the net. I had no problem making the connection on the schematic, though, so I don't understand why it doesn't connect on the PCB. Any help would be appreciated. If the grid is different between the part and the schematic it may look connected but not be. You can adjust the grid or set an alternate grid for this. If you grab the wire near the connection and it moves by itself then it is not connected. Another common thing is if one uses wire instead of net to make connections, -D

Former Member · Answer

On 5/29/2012 10:18 AM, Paul Horst wrote: Thanks, Doug. I checked the connections on the schematic like you suggested and the connections are solid. I have been using the wire tool to make all of my connections, though. Should I be using the net tool instead? I tried using it to replace the connection in question, but it won't connect to my part. This is a part that I created myself, so there is a distinct possibility that I made a mistake on it. I am trying to connect to an output pin that I created as an output on the symbol. Thanks again, Paul Yes, you should be using the net tool for connections. Not intuitive, but once you know it is ok. The most likely issue is the grid being different between the library part and the schematic. Check the grid on the part and compare it to what is on the schematic.