# Detecting a peak/rampup of a measurement

**URL:** <https://community.homey.app/t/detecting-a-peak-rampup-of-a-measurement/91277>\
**Category:** Questions & Help\
**Created:** [October 8, 2023, 11:41am UTC](https://community.homey.app/t/detecting-a-peak-rampup-of-a-measurement/91277 "2023-10-08T11:41:51Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\
**Post date:** [October 8, 2023, 4:40pm UTC](https://community.homey.app/t/detecting-a-peak-rampup-of-a-measurement/91277/4 "2023-10-08T16:40:58Z")

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This is another way to achieve it, using the[Device capabilities app](https://community.homey.app/t/app-pro-device-capabilities-enhance-the-capabilities-of-devices/43287).  
The flow part below detects very well if the shower started to run;

When the humidity changed, it checks if the value is 6% higher than the value was a minute ago:  
While you don’t want false positives, you have to measure the min/max difference of the humidity values in one minute. 6% works good in my case.

 ![Screenshot from 2023-10-08 18-39-39](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/8/4/84ea08b9d9e88574eed896c21a69f089c3ad10ff.png)

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