Hello all, I am new to node red as of 2 weeks ago, so Im sure theres something simple im missing here. I have a Raspberry pi zero W, with a neopixel stick and an adafruit BME680. I have used several different guides to build this dashboard. My main issue im having is that the line charts work compl…

So, the clock starts at 00:00, which is the time Ive typically been working on this around. I forgot that the Raspberry pi does not have a built in clock. The problem is that I have this device setup as an access point so it can be used in the field, and the Pi Zero W's wireless chip can only be …

The last output from BME680 Reader was: {"Temperature_oC":-130.80},{"Pressure_HPA":500.01},{"RelativeHumidity_percent":100.00},{"Resistance_Ohms":345088}

Add a debug node showing what is going into the chart and then refresh the page. What do you see in the debug node?

Here are the last few messages to the VOC chart (chart), after refresh: 5/12/2021, 2:36:58 PMnode: 1e595a8f.ee2875 Resistance_Ohms : msg.payload : number 364418 5/12/2021, 2:36:58 PMnode: 1e595a8f.ee2875 Resistance_Ohms : msg.payload : number 365220 5/12/2021, 2:37:00 PMnode: 1e595a8f.ee2875 …

It isn't the last few messages that matter, it is whether any extra messages get sent when the refresh occurs. Also what happens if you close the browser page and reopen it? Have you got any ui_control nodes in your system?

I do not get any other messages when the page refreshes. I do not have any ui_control nodes. Closing the browser and reopening after clearing the client's cache gives the same result. opening it on another client after the problem occurs also yields the same result I did forget to include these m…

It doesn't seem likely, but can't rule it out. My philosophy is, if you have a problem that you don't understand, but also can see an issue that appears to unrelated but is easily fixable, is to fix the simple problem just in case it is related. So I suggest sorting those errors first. [image] …

Also, is it possible that any of the messages you send to the chart have msg.timestamp present? Configure a Switch node like this and put it in the wire to the chart, with a debug on output 2. See if anything ever comes out of the second output. [image]

"What same result? Initially OK until you refresh that one" Yes, the chart works fine until the client browser page is refreshed After configuring and attaching a switch node as you suggested, I get this message in debug (switch output 2): 5/13/2021, 9:15:18 PMnode: 72618df0.784504 msg : error …

You have a very odd message there, you need to work out where that is coming from, it is probably associated with the other similar outputs you reported. Work back through the flow with debug nodes to work out where it is coming from.

Thanks for your input, Im currently doing some troubleshooting on this, ill report back when i have some results Are there any other chart modules you's recommend?

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Dashboard charts break after refresh (X axis scales up 5 hrs+)

Dashboard

Colin 15 May 2021 09:18 28

Well worked out! I should have thought of the possibility of problems with the clock.

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Dashboard charts break after refresh (X axis scales up 5 hrs+)

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