How to adjust font size (and other ui_controls for widgets) without causing the entire widget to refresh

Hello Everyone,

I am building an interface using node-red to connect to octoprint. I've successfully connected and am able to display (get) and send out (post) info to/from the printers. I have some gauges using node-red-dashboard displaying the temp of the nozzle and bed. They are currently working fine.
However, I would like to display the "actual temp" on the 'Value format' field and the "target temp" on the 'Units' field of the gauge. This also works at the moment but the text for the 'Units' field displayed on dashboard is tiny.

What I've tried:
Adding a change node before the gauge and do: Set msg.ui_control.options.labelMinFontSize to (number):12
This works, it resizes the font to the ideal size HOWEVER, since I am injecting the nodes every 5 seconds to capture the live data from the printer, the entire gauge now refreshes every 5 seconds (flashes, gauge goes from zero to 250 degree C) and does not look good.

My Question: Is there another way to set the font size of the Units? Maybe modifying the ui_gauge.js or html file so the change can be permanent/default? It seems like since the data is passing through a change node (or function, i've tried that too) it forces the gauge to refresh.

11 Jun 15:48:20 - [info] Node-RED version: v1.3.5
11 Jun 15:48:20 - [info] Node.js version: v14.16.1

here's my flow. Pardon the messy-ness, it's my first node-red flow.
Unfortunately, you won't see the flashing unless you connect a printer or something to get data from.
note: only the 'nozzle' gauge has the change node in front of it
node: I deleted a lot of other functioning nodes since I was hitting the limit on character count, lmk if I need to post the rest.

Thank you in advance

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}","offvalueType":"json","officon":"","offcolor":"","animate":false,"x":1404,"y":1088,"wires":[["300d67a9.44cfb8"]]},{"id":"b7cdad5e.4cc3d","type":"change","z":"8e75d807.a546a8","name":"","rules":[{"t":"set","p":"ui_control.options.labelMinFontSize","pt":"msg","to":"32","tot":"num"}],"action":"","property":"","from":"","to":"","reg":false,"x":872,"y":692,"wires":[["5a2b499.5f7ceb8"]]},{"id":"6e8a7c0a.7ef564","type":"ui_group","name":"Temperature","tab":"757ca397.8a250c","order":3,"disp":true,"width":8,"collapse":false},{"id":"7bfb7591.f92bfc","type":"ui_group","name":"Move","tab":"757ca397.8a250c","order":2,"disp":true,"width":"6","collapse":false},{"id":"1187834b.c1f0dd","type":"ui_group","name":"Info","tab":"757ca397.8a250c","order":1,"disp":true,"width":"6","collapse":true},{"id":"757ca397.8a250c","type":"ui_tab","name":"FS02","icon":"dashboard","order":4,"disabled":false,"hidden":false}]

It is known that ui_control messages force gauge to redraw. And most probably this behavior will not be changed.
However, there is no need to send ui_control message with every payload. Or is there?
You can send ui_control messages when dashboard connects and the gauge's look is updated as you need. Use ui_control node for that.
The flow should be something like this

1 Like

Oh wow, of course! I didn't even think about adding another connector to the gauge (or other ui displays).
Thanks!