Pico W Incubator

Although there are lots of database plotting programs (like Grafana, etc..) you might like to take a look at the FREE version of Clarify as that integrates quite well with Node-RED.

https://clarifyapp.clarify.io/

I use it for plotting readings from a node in my greenhouse and the node in my friend's shed in Boston, USA.


Here's the simple Node-RED flow to process the readings from MQTT to Clarify.

There are posts about Clarify on this Forum. Here's just one of them...