MMM-CalendarEXT3 newbie

t0lbert

so i have gotten the default calendar to add my google family calendar, and it shows in the top left fine with the next 7 day events listed. but i want our family calendar in the top center in monthly view. was told this module is the one. i installed the module and all i see is the word NOVEMBER with nothing else. what am i missing?

thanks

sdetweil

@t0lbert I replied on Reddit too

So ext3 doesn’t want to flash the screen as events come from the default calendar, which could have multiple urls configured,

So it draws the calendar on a (configurable) refresh interval (default 10 minutes).

But you dont want to wait 10 minutes for the first draw,
So there is a config parm, waitFetch (default 5 seconds)
After waitFetch, it will draw cal with all events that have arrived (maybe none), then wait refreshInterval to draw the next

You can lengthen waitFetch… side effect nothing will be drawn til waitFetch expires

If you use pm2 to start MagicMirror, then its log has timestamps on the log entries, so you can see how long it takes to get the first events broadcast.

pm2 logs —lines=xxxx
xxxx is the number of most recent lines of output, 15 default

from a log on my system

[2025-11-30 10:24:52.516] [LOG]   Launching application. 
[2025-11-30 10:24:53.514] [LOG]   Create new calendarfetcher for url: https://calendar.google.com/calendar/ical
[2025-11-30 10:24:53.638] [LOG]   Create new calendarfetcher for url: https://ics.calendarlabs.com
...
[2025-11-30 10:24:53.901] [INFO]  Calendar-Fetcher: Broadcasting 1 events from https://ics.calendarlabs.com
[2025-11-30 10:24:54.606] [INFO]  Calendar-Fetcher: Broadcasting 162 events from https://calendar.google.com/calendar/ical

calendarlabs fetch and process took
 10:24:53.901
-10:24:53.638
----------263 miliiseconds

google       fetch and process took 
 10:24:54.606
-10:24:53.514
--------1.092 seconds

IF BOTH of those are over waitFetch (default 5000) ,
then the calendar on MM will be empty until Ext3 refreshInterval expires (default 10 minutes), 
    doc says 30 minutes, code says 10 minutes

Google sends the whole calendar since its creation, could be thousands of events in the past