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Build and test second moisture sensor prototype Proto-FD for John.
Documenting results of 2-week long test.
Assembly of QTY=2 prototypes.
Documenting initial test results.
initial testing of FD-prototype.
Documentation, published status on Sensorica web site.
Signal output measured with DVM. Depending on facing material, signal measured between 1.2V and 0.400V.
With probe in air, signal is 400mV with LED current set at 100mA. Signal decreases in proportion of LED current. Signal is very stable, +/-1mV over ~5 minutes.
Gathering components: LED driver, PD circuit, bifurcated Y fiber bundle.