FDC2114: FDC2114

Kenny,

That is probably not a good fit for the FDC2114, but I do not know much about that application. The FDC2114 really shines with relative measurements, which is why hand proximity/touch sensing and liquid level sensing both shine.

In general, here are a few guidelines for any sort of precise inductive/capacitive sensing:
- Standard target (if the target will be of various uncontrolled shapes and materials, then a precision measurement will be difficult or impossible)
- Relative measurements are best (there will be drift due to temperature and oscillator drifts. Using a reference channel can be used to mitigate this.
- Relative size of the sensor to the distance of the target (usually the bigger the sensor the better)