https://www.laskakit.cz/user/related_files/l9110_2_channel_motor_driver.pdf
https://docs.sunfounder.com/projects/3in1-kit-v2/en/latest/_images/l9110_module.jpg
Shows wiring of pump for UNO:
https://docs.sunfounder.com/projects/3in1-kit-v2/en/latest/basic_project/ar_pumping.html#ar-pump
This could be used to water plants or check foundation moisture (at least in Texas).
Step 1 would be to try with watering plants.
Step 2 would be to try outside around foundation.
Others have discussed this, but the 2017 discussion had no working solution. Wifi is more available in 2023.
Product Idea for an Entrepreneur…Foundation Soil Moisture Monitor/Manager
There are many kinds of soil moisture sensors, from very cheap to very expensive. It has been said these sensors are affected by soil type, like sand, and temperature among other things.
Nice: Soil Moisture Meter 4 in 1, Plant Water Monitor, Automatically detect Moisture/Temperature/Fertility, Can Connect to Mobile Phone via Bluetooth, Hygrometer Sensor for Indoor Plants BUT Bluetooth not WiFi
Cheap: Resistive (2 probe) vs Capacitive (1 probe)
https://www.hackster.io/devashish-gupta/capacitive-v-s-resistive-soil-moisture-sensor-e241f2
Sample project:
https://www.hackster.io/lifelyteam/soil-moisture-sensor-and-much-more-4d03fd
USE THESE:
Soil Moisture Sensor For Plants (V1.2/v2.0)
Water Your Garden with IoT - Soil Moisture Sensors
Ardiuno IOT cloud How-To
https://youtu.be/pgGpuws7f9o?list=PLWNDWPAClRVr7Y4cv1H0WAcB9Zqwgpi9p
Arduino Soil Moisture Sensor (Lesson #14) Resistive (2 prong)
Interfacing Capacitive Soil Moisture Sensor with Arduino Capacitive (1 prong)
