@balthaz Config looks good. Strange…

I will add some debugging messages to the code later to make it easier to find the problem.

I just completed my first module: MMM-Rest (https://github.com/Tuxdiver/MMM-Rest)

It calls a number of URLs and displays the values in a configurable table on the mirror. The URLs must return a single floating point or integer value, which will be formatted to a fixed number of digits and a custom suffix will be appended.

I use it for displaying temperatures and other environmental values from a running OpenHAB server via its REST API.

Please have a look at it and feel free to give me some feedback!

Best regards,

Dirk