@cccp402 the calendar must be public, as mm is not logged on as you.

Your desktop browser IS logged on as you

@ricq I started with this project

https://www.instructables.com/id/Water-Tank-Levels-by-WiFi-on-Your-Phone/

and added flow sensors

using this as a base
https://www.esp8266.com/viewtopic.php?f=160&t=17184

Blynk (ui tool) has a rest api to get data…
I finally got it working this morning, with graphs shown on my mirror

@lavolp3 said in has anyone used any of the charting tools, like chartjs?:

MMM-chart,

thanks… my data does not come back in JSON… but as CSV. with a unix milliseconds timestamp.

one data set is a float value (could be truncated to int), one is an int.

@cirdan thanks… trying to stay away from jquery… and the chartjs works fine with 5 or 10 points…

i have made some progress. the chart appears and has the right axis labels and values…

the chart itself is drawn wrong… with the jagged line across the x-axis at the right Y-axis height, being drawn vertically on the right edge of the chart, top to bottom…

as you will be the only user of the app (in your house, no public consumers, not open to internet)…

the vulnerabilities really don’t matter…

sorry, I do not know why reading from the local disk would fail with cache read failure error

@rakostamas said in MMM-Fuel:

/home/pi/MagicMirror/modules/MMM-Fuel

please do

cd ~/MagicMirror

then

npm start dev

wrong folder… in MagicMirror always for start. not module folder

i am making a module to add visualization of my friends water well system. I have a mobile app that does this, but it is hard to remember to look at the phone app…

anyhow, there is a rest api to get the raw measurements (collected at once a minute 24/7)…

for a 3 day view that is around 4200 entries.

@rakostamas run

npm start dev

to open the development screen, select the console tab… are there any errors (in red) shown?