Set-up to monitor my brew fermentation (over a ~10 day period) to watch for co2 levels to drop to indicate the brew is done.
Also have a Rowi (API enabled plug) to turn on my heater belt if the temp drops low.
Currently a WIP - will improve and add some 3d print files for the housing ( fits on top of the airlock).
- pi-zero 2w
- ccs811 - air quality sensor (sparkfun)
- DS18b20 - Temperature Sensor Probe - Stainless steel
- rowi 2
- Mangrove Jack starter brew kit
- Thermowell 300mm - cut to suit
# Uncomment some or all of these to enable the optional hardware interfaces
dtparam=i2c_arm=on
dtparam=i2s=on
dtparam=spi=on
# Enable I2C clock stretching
dtparam=i2c_arm_baudrate=10000
...
dtoverlay=w1-gpio
enable_uart=1
- git
- r-recommended
- r-cran-zoo
- python3-pip
- pip3 install sparkfun-qwiic-i2c # see also https://github.com/sparkfun/Qwiic_I2C_Py
Note: see also https://github.com/sparkfun/Qwiic_CCS811_Py but there is a pull request open for this
sudo cp *.service /etc/systemd/system/
systemctl enable fermmon.service http.service
# m h dom mon dow command
*/5 * * * * cd /home/ubuntu/fermmon && /usr/bin/Rscript fermmon.r >/dev/null
- readTemp.py to check if the 1-wire temperature probe is working
- testRowi.py to check that Rowi is working
- check cron ** journalctl -u cron -f
- creck for debugging messages ** journalctl -u fermmon -f
- https://www.sparkfun.com/sparkfun-environmental-combo-breakout-ens160-bme280-qwiic.html
- https://surplustronics.co.nz/products/7361-temperature-sensor-probe-ds18b20-stainless-steel?srsltid=AfmBOoqpXowka8xFb00-9X7AfwTPzsrlTYhQia4CZAeGhiJS74ml-dqN
- https://www.kiwi-warmer.co.nz/shop/product/826130/rowi-2-smart-plug-with-api/
- https://mangrovejacks.com/collections/starter-brewery/products/traditional-series-blonde-lager-starter-brewery
- https://allthingsfermented.nz/products/ss-brewtech-stainless-steel-weldless-thermowell