Avoid unconnected warning in power poins with kicad
Sometimes KiCad complains about pins not being driven while during the electrical rules check, like in the example below:
This happens when pins are connected to a power network that has no explicit power pin. For example, I use screw terminals to connect a 12V supply to a PCB, therefore I have to add an extra label to the screw terminal so KiCad understands where the power is coming from:
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