Capacitive Soil Moisture sensor from https://github.com/Miceuz/soil-moisture-sensor-analog . Some parts changed because of local availability.
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miceuz fa591536b1 Add a 15 low pass filter and use the last opamp as a buffer. Also add an output protection resistor. Also specify missing resistor values 2015-03-26 14:23:15 +02:00
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README.md

soil-moisture-sensor-analog

Analog soil moisture sensor. Continuation of my Chirp project. The idea behind this version is to provide an analog output for the microcontroller and increase the resolution by detecting both peaks and dips of filtered waveform.