Raspi-chill on Raspberry Pi:
- Accepts data sent via HTTP from iSpindels (wifi)
- Gathers data from nearby Tilts (bluetooth)
- Forwards data to the Hold My Beer platform
- Exposes a local brewery UI to get real time data from nearby sensors
Previously was also a temp. controller (ice box - fermentation chiller, turning a fan on/off). That is handled by an external controller now.
Install python deps, bluetooth, i2c... Make sure I2C is enabled (raspy-config).
pip install -r requirements.txt
cp src/config.example.ini src/config.ini
mkdir logs
sudo apt-get install -y i2c-tools python3-smbus
sudo apt-get install bluetooth libbluetooth-dev
Make sure remote/s3-upload.sh exists. Need aws credentials setup (aws config).
On system boot, start the main regulation system. Once an hour, refresh config file from S3.
As root, crontab -e:
*/5 * * * * /home/pi/projects/raspi-chill/remote/s3-upload.sh
@reboot sleep 5 && nohup sudo python3 /home/pi/projects/raspi-chill/src/regulate.py &
nohup sudo ./src/regulate.py --name NAME &
Real-time updates of config.ini are supported. Example usecase: change the regulation temperature, cycle time, ...
https://github.com/frawau/aioblescan also see https://github.com/baronbrew/TILTpi
in src folder, install aioblescan with tilt plugin
wget https://github.com/baronbrew/aioblescan/archive/master.zip
unzip master.zip
cd aioblescan-master/
sudo -H python3 setup.py install
check that it works
sudo python3 -u -m aioblescan -T
2 rows / 16 chars per row
Test:
python3 src/test_lcd_display.py
check if i2c is loaded: lsmod | grep i2c_
get address of the i2c backpack: sudo i2cdetect -y 1
usually 0x27
docs: https://rplcd.readthedocs.io/en/stable/usage.html
- icebox v1: FreeCAD design and panels measurements in
cad/iceBox.fcstd - 12 VDC 80 mm fan
- 12 VDC relay
- Raspberry Pi 3
- Relay module
- 12 V at 400 mA power supply
- 5 V at 1A power supply
- Digital temperature sensor: DS18B20 (or XC3700 mounted on a board)
- Reference: https://www.jaycar.com.au/digital-temperature-sensor-module/p/XC3700
- Pinout: see ./docs for wiring
- (prototyping/debug only) Breadboard
- (prototyping/debug only) Jumper cables