I was looking around for a DIY LCR meter, one that can measure not
only L and C, but hopefully ESR and phase too. Measurements up to
10kHz would be good, more would be great.

I found software called Visual Analyser which is a scope, function
generator and also an RLC meter.

http://www.sillanumsoft.org/ZRLC.htm

It looks pretty capable, and the hardware interface is very easy being
based on 2 op-amps.

I also found this from Circuit Cellar based on a dsPIC:

http://www.circuitcellar.com/microchip2007/winners/third.html

It has full schematics and source code, but alas, no PCB artwork. I
could draw up the PCB but I decided to ask the wisdom of the list if
they have any suggestions on an LCR meter (with ESR) available for
minimal ($100 USD) cost.

I already try to do measurements with my scope and function generator,
but it's a hassle and I find even my 10M ohm scope probes can change
the circuit enough that I have to account for it.
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