Resistive Moisture Sensor
thingiverse
Resistive moisture sensor, intended to measure soil moisture content. The electrodes are cast in gypsum to reduce the sensitivity for the soil salt concentration. More background information can be found here: http://vanderleevineyard.com/vineyard-blog/the-vinduino-project-2-making-and-installing-gypsum-soil-moisture-sensors http://melbmcu.weebly.com/arduino-soil-moisture-sensor/arduino-soil-moisture-sensor (These pages have been the inspiration for this project!) With increasing moisture content, the resistance of the sensor will decrease.
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