This is a home automation system for sprinklers and environment sensors.
The system is built up using django on top of 1-wire based sensors
(running on Raspberry PI's, but any linux box should do.)
The watering cycles are designed to be "smart." For each circuit we
establish the amount of water delivered per hour (typically inches/hour
but units are configurable.) For typical lawn sprinklers, this can
be easily determined by placing a plastic cup on the lawn, and running
the circuit for 10 or 15 minutes, then measuing the amount of water in
the cup, and extrapolating the amount delivered in an hour. Then look
up the recommended amount of water per week for your type of grass
(or plants) for you general climate. Then pick how many days/hours to
wait between cycles. For example, with lawns, deeper watering less
frequently will result in deeper root systems and more hearty lawns.
For vegitable gardens, young plants wont have deep root systems so you'll
need to water more frequenty.
Once watering rate, target amount per week, and time between cycles is
known, then the system can deliver the optimal amount of water for the
circuit. Over time, you can tweak the goal based on how the plants look
(e.g., increase if they're getting brown, decrease if they're growing
In addition, if a rain guage is wired up, the system will record rain
volume against each circuit so watering can be avoided when mother nature
takes care of it for us.
- Add temperature/humidity modifier for circuits - if temps are low, water
less, if temps are high, water a bit more.
- Consolidate old historical temp/humidity sensor readings to just daily
high/low to improve performance on low-power systems like RasberryPIs
- Convert initial bootstrap logic from hard-coded scripts to
- Further decoupling of the 1-wire logic for sprinkler circuits
so they can be driven by a remote instance of the app
docker-compose build docker-compose up
echo "create database home_automation;" | docker exec -i homeautomation_db_1 psql -U postgres cat dump.sql | docker exec -i homeautomation_db_1 psql -U postgres home_automation
Plausible crontab entries:
*/1 * * * * /usr/bin/docker exec homeautomation_app_1 python ./process_queue.py --queue ./queue 0 4 * * * /usr/bin/docker exec homeautomation_app_1 python ./predictions.py
Wipe old data
python ./manage.py flush
sync up the DB schema
python ./manage.py syncdb
Load the known sprinkler circuits
Migrate data from the old DB
Run the server and see what happens...
python ./manage.py runserver
Dump historical data out to migrate between systems
python ./manage.py dumpdata --indent 4 > dump.json python ./manage.py loaddata dump.json pg_dump -h localhost -U automation -W home_automation > dump.sql
Create the user
sudo -u postgres createuser -D -A -P automation sudo -u postgres psql -c "ALTER USER automation CREATEDB;" sudo -u postgres createdb -O automation home_automation
Poke around in the raw DB:
psql -h localhost -W home_automation automation \dt
python-coverage run --source='.' manage.py test python-coverage report -m