I'm facing a very frustrating issue with KiCad 8.0. I've designed a simple schematic with multiple components connected to a GND power symbol, but when I update the PCB from the schematic, the GND net doesn't show up. My components that should be connected to ground are showing no net or are being connected to my +3.3V** power rail instead.
I've already tried the following:
Verified that all components are correctly connected to the GND symbol in the schematic.
Checked for any accidental connections between the GND and +3.3V power symbols.
Used the "Update PCB from Schematic" tool (F8).
Made sure the power symbols are from the standard KiCad library.
I'm at a loss here. Has anyone else experienced this problem? Any suggestions on what else I can try to fix this? I've attached a screenshot of my schematic and the PCB to show the issue.
It’s a wild guess, but my first guess would be that the GND symbol in the schematic is not connected. Watch out for small green squares (open wire end) and dark red circles (open pin) on the attachment point of the GND symbol.
Second guess:
Your GND and power net may be shorted to each other. This can be as well hidden as a wire drawn right though a (decoupling) capacitor. A big hint for this is the appearance of a junction dot when only one wire should be connected to a pin.
If that does not work. then you can upload a (simplified) project. That’s much easier to diagnose then from text alone. Just a few symbols (even just a few passives) can be enough, as long as it reproduces the problem it’s good. It does not have to be a “working” schematic for diagnosing things like this.
