Chronograph calculate times

Questions & Help
1

I have a smart plug that controls a Humidifier, I have made a flow to inform me when the smart plug has started 5 times. Now I also want to check the time the smart plug was on during these 5 times to check the waterreservoir.
Eg. 1st Humidifier was on for 40 minutes, 2nd H was on for 2 hours, 3rd H was on for 1 hour, etc. I want to receive a message if the H is on for 3,5 hours

2

with Chronograph App for Homey | Homey it is possible to use a stopwatch.

1 Like
3

Actually there is no reason to calculate time in flows. We can measure it directly :wink:
How to do it - to many possible paths and different timer apps, but main steps…

  • Use some Timer ( does not matter it counts back or forwards, but You must set event when it reaches back to zero or to the specified runed time for H)
  • When H starts, start ( actually resume, do not set new value) the Timer
  • When H stops, pause ( again, not zero/set ) the Timer
  • When the timer reaches zero/determined value - send message
  • Use automatic ( together with “send message” ) or manual ( GUI / button / … ) re-setting The Timer

Above are the bones of logic, if i need to build something. Just for comment - i personally prefer to have separate event handling for re-seting timer, because there may be “human factor delay” between message and tank refill.

1 Like
4

Hi Hielke,

Thanks, can you provide an example?

Regards,

John

5

:HI Cuprum,

Same as above, can you please provide an example?

Regards,

John

6

Ok, some PoC, As here is quite hot, i used Fan instead. Also used some other handfull pieces. But hope, the change of devices is easy… also take it easy, used only ~10 minutes and not fully tested/debuged it :innocent:

image
image1208×1153 132 KB

7

image
image1233×796 135 KB

Witch extra check when you turn it on (but for reminder if stopwatch was not set to 0).

8

thanks a lot I will try this tonight :wink: