rpi-pico-watering-system

Circuit diagram

Data flow

TODO

hardware

• make a proof of concept version of the circuit with a breadbord
• test adc multiplexer
• put everything together inside an electronics box
• connect the water tubes circuit

software

• figure out data flow between rpi pico and homeassistant with mqtt broker
• create data model for mqtt topics
• figure out how homeassistant can read data from mqtt and set thresholds for soil moisture and trigger a publish to relay topic that opens the relay for the specific sensor
• create micro python script for rpi pico that connects to local wifi and sends to mqtt topics the sensors data
• refactor script to use esphome

Setup

1. rename secrets.py.sample to secrets.py
2. install umqtt.simple from Thonny package manager
3. run the main.py script