Soil Moisture Guard an electronic project to automatically water up to 4 plants uses 1x Arduino Nano 1x Adafruit eInk Display 4x Adafruit pumps 4x capacitive soil moisture sensors Links capacitive sensor - https://makersportal.com/shop/capacitive-soil-moisture-sensor schematic - https://thecavepearlproject.org/2020/10/27/hacking-a-capacitive-soil-moisture-sensor-for-frequency-output/ https://learn.adafruit.com/adafruit-stemma-soil-sensor-i2c-capacitive-moisture-sensor
