Hi, i have developed a dynamic thermostat node. node-red-contrib-dynamic-thermostat I hope you test it and give feedback.

[image] Colin: That may occasionally be useful really ? - I can't think of any other nodes that use multiple topics to set internal config parameters - so while perfectly allowable - it is a not a pattern I recognise, whereas using different properties is.

[image] dceejay: I can't think of any other nodes that use multiple topics to set internal config parameters node-red-contrib-pid for example. It is really useful when parameters are user variable. They can be written to retained topics in MQTT and then easily fed back into the node using …

@DenisMtfl - I can't check (because your git repo url is not displayed) but does the node persist it's configuration if node-RED is full deployed, or a system reboot? For example, does it remember it's last target temperature setting and hysteresis settings. If not, what state will the resulting o…

ah yes - if you are using mqtt broker as a store then yes make sense.

I have just now updated the package.json. Thanks for the reply

Hm interesting point i think about it.

Apologies if this is a dumb question, but what is hysteresis, and if I were to use this how would I know what value to use? Also, I assume that the other parameters (target and current) don't care whether the units are F or C or K, as long as they are both in the same units. What 'units' is hysteres…

[image] SteveDonie: what is hysteresis Hysteresis is a dead band used around the target temperature to prevent the power being switched rapidly on and off due to noise when the temperature is close to the target. The power stays on until the temperature is greater than the target temperature…

[image] SteveDonie: What 'units' is hysteresis in? It doesn't matter what unit the hysteresis is. The importance thing is that target, current and hysteresis are the same unit. Because if you have an thermostat with a temperature it doesn't matter what unit it is if the thermostat calculates …

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DenisMtfl 20 March 2021 20:20 13

No it doesn't because I don't know how to implement this function. Right now I used the node context to store the parameters, after the flow is deployed the parameters are safe but after the restart the parameters are gone. I am very new to nodejs programming. So thanks for any hints.

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[ANNOUNCE] node-red-contrib-dynamic-thermostat 0.0.4

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