Very quick and dirty at this point. Will eventually make this a little more polished so I can track more than one data point. Make it a bit more agnostic.
- Make call to Blynk endpoint on interval and store value and date
- Serve latest data point
- Serve up historical data 📈
Followed this StackOverflow answer to setup a service.
Clone repo to home directory (/home/pi) and create symlink to /etc/systemd/system/.
ln -s /home/pi/data_tracker/data_tracker.service /etc/systemd/system/Setup MySQL database and user.
Copy .env.example to a new .env.
Install NPM dependencies.
Make sure start.sh has execute permissions.