Hey,
I’m trying to get the time when someone took a shower. I have a humidity sensor in homey in my bathroom. I tried to use the “trend” check of ITR. But it doesn’t work. How can I calculate the trend between two datapoints, that I use the correct value for the ITR flow card.
Maybe I’m doing it the wrong way. But this is with what I came up with:
If humidity becomes greater then 41-60%
use ITR to check if the trend was greater than .75 in the past 15 min
set var “showered” to yes/true and save current time in ms to var “showering time”
for test purposes send a push notification to me
This is what the flow looks like? But it doesn’t work. Any idea what I’m doing wrong or am I going in a complete wrong direction?
OK. I was way to high with 0.75. I now use 0.01. Let’s see if it works tomorrow.
It would look nicer, but from a performance perspective, wouldn’t that put more load to homey pro then my “solution”? Humidity is normally (apart from showering) not changing drastically throughout the day, so in my case if there is nothing to detect it might trigger the flow a few times a day, with every x sec it would be much more.
Or is there another reason you would go for the x sec trigger?
Hi @L3nny, I do the same but instead of humidity, I use temperature. My flow looks like this and it works great except when the washing machine is on, but that is a general problem of the water trigger instead of the douche trigger.
To trigger the change I calculate the difference between “last value” and “first value” over a specific time. I think you can do the same to detect trend changes in your humidity values.
I might have found a small issue with the app. When adding a condition card from this app and inverting it, the text on the card does not change even though the behavior changes.
It could be just for the Swedish translation, not sure.
No difference in english.
I think it is hard to just “change” the text. The use of invert on this card is to invert output true to false and vice verse. I never needed it because you can change the operator to accomplish same behaviour (smaller to greater, equal to not equal).
