Large metal planes uniformly spaced. At what point is the parasitic capacitance just a capacitor.
And an antenna, and a coil. Breadboards are great for slow and digital up a few 100 Khz, above that you are going to have the occasional interesting challenge / hairpulling session.
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And an antenna, and a coil. Breadboards are great for slow and digital up a few 100 Khz, above that you are going to have the occasional interesting challenge / hairpulling session.