Show voltage drop in Simulator

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Another workaround can be found here:

Simulation plotting references?

Hey, there. Currently, Eeschema <-> ngspice interface is somewhat limited so you can’t plot differential voltages directly in KiCad’s Simulator app. One workaround is to generate the difference voltage within the simulation itself and plot it. There are several ways to do this. Although E-source would probably be the most “correct” way, it requires a non-standard symbol with two extra control pins. Therefore, I opted to use a B-source in the attached example project (in ZIP file below) whic…