A cheap very accurate LC meter with RS232 interface

Aug 20, 2010 2 Replies

Update A cheap (< 10 $) very accurate LC meter with RS232 interface.

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Updated the website, added an explanation how it works, derived the equations for Cx and Lx, and updated the software.


What techniques did you use to get the circuit diagram picture to come out so gray? It must have taken you a good deal of time and trouble to get such uniform-looking dull gray while at the same time using uneven lighting and poor resolution to foil anyone trying to read your circuit.

security through obscurity !!

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