I've been watching a lot of your tutorials lately. Unfortunately, I have a lot of doubts if what I need to do is "doable" with MQTT + Node red.
I'll try to explain in a simple way: I'm using a Software from Pozyx to get some coordinates from a RFID device. This software sends a payload via MQTT with some info (coordinates, timestamp, acceleration and blablabla). What I need to do is: receive this info, filter the payload to get only the coordinates, apply these coordinates in some matrix calculus (pure math) and show the result of the matrix in a dashboard.
What I was able to do: establish a broker to transfer the data via MQTT, connect my MQTT to my node-red "ambient", receive this payload and filter it to get only the coordinates.
Finally, my doubt is: is it possible to make the calculus on the node-red ambient or I need to run a nodejs server, send the info from my mqtt to the nodejs, do the calculation and then send it to node-red dashboard?