I would like to ask a few questions about designing PCB boards on Altium Designer.
I am currently designing a STM32 board, but having a few issues with the schematic design.
Upon reading some post about the following errors:
- Net has only one pin, and
- Pin out of grid
I understood that 1 occurs when the NetLabel in schematics is not used anywhere else therefore the connection does not exists and there is an error. There is an instance in this project which I don't understand: Pin 9 & 10 PA 11, 12 on J1 aren't used anywhere in both sheets but PA 11 & 12 on the IC is actually used for D_P and D_N for the USB. Does anyone has an idea as to why it would be used in this way?
And for 2 it happens when the pins of components don't align with the grid. Some posts suggested to redraw all components to make it fit the grid. I solved quite a few of the instances by just repositioning the components using the metric grid.
Am I correct?
Now for the floating label is it that the label is not attached to any wires?
Also I tried creating a Differential Pair for a USB Connector on the board, but not success when trying to use the rule wizard for the differential pairs editor as it is not stated in the list. I have attached a picture for rules settings of the created pair. All the pictures are attached in this post.