WebKeezer, now with plots!
As this is still a work in progress, I'm going to have to rework a lot of code later. Yes, later.
But I've used
chartist.js to make a pretty nice plot. If I had more storage space on my Omega, I'd install
pyplot and not deal with java, but I'm squeezing the last 100kB out of my on board storage.
Here's the plot:
The yellow line is the temperature in the jar of water that controls the freezer. The setpoint is 5.5 C with a differential of 0.9 C. The red line is from a second temperature sensor I placed near the beer lines and shanks to track air temp. I have a small computer fan inside running continuously. Depending on how it's positioned the air temperature can be about 2 C cooler than shown in this graph.
The code is on GitHub.
I had to add this line to the chartist.css file to get rotated labels:
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