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  • Author Author: ntewinkel
  • Date Created: Date Created
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Time well spent, wasted, or something

ntewinkel

I spent far too much time last night adding daily high and low temperature display to my Raspberry Pi  node red hummingbird feeder monitoring UI.

So many limitations and quirks to work around!

First, Influxdb does not have a “start of day” function, so I had to do that in a node red function. I need that so it doesn’t include yesterday’s readings for today’s highs and lows.

Then, I realized everything is in the UTC timezone, which gives a different meaning to “today”, so I had to adjust that on both ends: in node red AND in the influxdb query.

Things got personal, so I couldn’t quit!

But look! How pretty!

image
ultimately it was only a few hours, but for that tiny bit of result I was thinking it should have been like 10 minutes! Maybe I need to lower my expectations Joy 

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  • Yep, I think it relates to starting with the simplest tool you can find, like the no-code Node-Red option, and then quickly finding its limitations... but the thought of starting all over with a better code-based option keeps stopping you from switching... so frustrating this learning curve malarkey.

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  • Yep, I think it relates to starting with the simplest tool you can find, like the no-code Node-Red option, and then quickly finding its limitations... but the thought of starting all over with a better code-based option keeps stopping you from switching... so frustrating this learning curve malarkey.

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  • in reply to BigG

    So true.  It's the same feeling you get when you write a simple user interface in VisualBasic and then it grows and grows and becomes a very difficult thing to modify or maintain. But trying to start in a more code driven development environment would have meant a steeper learning curve and the possibility that you might have given up due to a lack of progress.

  • in reply to BigG

    Pretty much, yes! In my case I was thinking that I could do it all in one Influxdb call. What was more frustrating was seeing examples of flux (whatever that is?) doing what I need for the “today()” call, and then later seeing the note about this not being available in Influxdb. Also getting max and min in one call is possible, but then you don’t get the related time stamps. Shrug