LC meter project: capacitor doubt

Projects General Guidance
1

Hi:

I am starting my new project, a LC meter (since I want to know at what frequency is resonating a combination of L and C)

I saw this one Easily measuring inductance with Arduino | ReiBot.org I am having some doubts regarding electronics here, its using a "fixed" C, so It only measures L and the frequency. But in order then to have the same resonance, I will have to use the same C and matching L, Right?

Even the code has this

capacitance = 2.E-6; //insert capacitance here. Currently using 2uF

So the 2 Cs are "fixed", I am bit lost on how then can i use that coil and its value, and resonating frequency, doesnt it depends on C also... unless I use a 2uF its not the same, right?

Thanks.

2

actually here only L is varying

f=1/2pi*sqrroot(1/LC)

by using this formula you are going to calculate inductance.

3

pallavi99:
f=1/2pi*sqrroot(1/LC)

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