History Graphing and the LED

Need Help With My Project
1

I have a problem. I have a thermostat running in Node-Red - and in order to show when the heat is on - I use a LED! The value for the LED of course has to be 0 (fully off) or 255 (fully on). And that’s great.

But when I come to use the history graph of temperature (<40) and humidity (<70) - I end up with the all of that squashed at the bottom - because the LED status goes up to 255 and that therefore becomes the maximum for the graph instead of a more reasonable 70 or 80…

Any way around this?

Also - why does the LCD display have a Chinese symbol in the middle at the bottom?

2

History graph shows what you send to it, it’s easy. You can send a different value to the Virtual Pin and log it on the graph.

It seems that LCD Widget was made somewhere in China. That’s why there is a logo there. We don’t even know what it means…

3

Just picking this up as it seems to fit my request: having a defined min/max for the History graph.

When logging temperature / humidity (dht11, esp8266 stand-alone, local server) I have peaks due to… I guess the sensor. Whis messes up the axis of the graph - see here

Screenshot_2016-01-15-09-51-36.png1200×1920 118 KB
. I can handle this codewise with a running average maybe but having min/max values for the graph would be neat to get rid of outliers when looking at longer time spans…

btw: the google translator says “Blink electronics” as translation for the LCD widget subtitle. :smiley:

4

Hm… Yeah, look like we have to add min/max. @Pavel have a look.

5

It was mentioned in other topic. Those DHT22 are noisy. You need to filter and smooth the data.

Min max will be discussed anyway.

Thanks for reporting.