Author Topic: Capacitive moisture probes  (Read 239 times)

damonb

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Capacitive moisture probes
« on: September 10, 2018, 11:41:37 PM »
Note: This topic was split off from: https://lowpowerlab.com/forum/projects/moteino-based-battery-operated-sprinkler-valve/msg24168/#msg24168

I have been using the moisture probes with the coated circuit boards outside for several months this summer.
@DonpK, would you mind posting details of your capacitive moisture probes and experience using them? (In a separate thread would be better i guess.) I have been using the Vegetronix probes for a few years but they only seem to last for 18 months or so in the ground. My initial attempts at a conformal coating have not been very satisfactory, reducing sensitivity considerably and only extending the life expectancy by a small increment. The probes are too expensive to replace that often.
« Last Edit: September 11, 2018, 08:13:48 AM by TomWS »