A follow-up project of temp-report, using a Raspberry Pi and BME280 sensor to monitor temperature, humidity and barometric pressure, then graph it on a flask based website.
- Using Docker enables us to scrap the messy install script with numerous tmux sessions, and start the logging in a container that starts with the system
Containers:
- flask: python 3.11 flask website using uWSGI on port 8080
- nginx: Nginx reverse proxy uWSGI 8080 to port 80
- log: python reading rpi I2c BME280 sensor and logging it
Fritzing circut diag image credit: Matt Hawkins (probably)
- Connect the sensor and enable the I2C bus
- As well as the fritzing diagram, Matt Hawkins' article has useful instructions about enabling the i2c system and connecting the sensor to i2c bus
- Although, we're using the BME280 python module from Richard Hull who also has some fine instructions.
- Install docker and docker-compose on you pi: straightforward guide
- Essentially, the following can be used:
sudo su -
curl -fsSL https://download.docker.com/linux/$(. /etc/os-release; echo "$ID")/gpg | sudo apt-key add -
echo "deb [arch=armhf] https://download.docker.com/linux/raspbian buster stable" >>/etc/apt/sources.list.d/docker.list
apt update
apt install -y --no-install-recommends docker-ce cgroupfs-mount
systemctl enable docker.service
systemctl start docker.service
- Additionaly I added the pi user to the docker group to enable a non-root user to run docker:
sudo usermod -aG docker pi - Restart the session, or do:
newgrp docker(Remember this or you will still get 'permission denied')
- Clone this repo:
git clone https://github.com/ihayhurst/TurgidLemonMeander.git cd TurgidLemonMeander- Fetch the containers:
docker-compose pull(The Pi 3 can take 4 hours to build it otherwise) - Start the containers:
docker-compose up -d - Also note, if the sensor isn't working, the stack won't start (/dev/ic2 is required)
- I aim to fix this, at least let the stack start if the device is missing, and use an old copy of the log
- See project plans
