https://www.esphome.io/components/sensor/smt100/
SMT100 Soil Moisture Sensor - ESPHome - Smart Home Made Simple
Instructions for setting up SMT100 soil moisture and temperature sensor
soil moisture sensoresphome
https://www.outdoorguide.com/2063252/soil-tip-prevent-root-rot-tomatoes/
A Simple Soil Tip That'll Help Prevent Root Rot When Growing Tomatoes
Jan 3, 2026 - Adding perlite to your soil mix prevents root rot by improving drainage and aeration, giving tomato roots the ideal environment to grow strong.
simple soilhelp preventtiprot
https://www.adafruit.com/product/6362
Adafruit Simple Soil Moisture Sensor - For micro:bit, and more : Adafruit Industries, Unique &...
soil moisture sensormicro bit