Soil IoT Humidity Monitor
Since the ESP8266 has only one analog input (A0
), we have to use a analog signal multiplexer. For that we
use the 74HC4051D:
This is mounted on a customly designed shield, where the ESP socks into:
sudo apt install sqlite3
cat migrations/00_bootstrap.sql | sqlite3 db.sqlite
cargo install cargo-watch
cargo watch -cqw src -x run # Restart server during development on every file change