Calculate time

[samuel 27]

UPS time offline

 

I want to make a scene in how long the battery last of my UPS till when the power is been restored. 

 

How can I calculate two times in between?  (13:55 - 12:35 = 80 min)

 

Thanks for you help

[Joep 188]

Convert the two times to a

Please login or register to see this link.

and do the math.

Assuming you get two times back in the format HOUR:MINUTE and no date. To convert I use the Lua date/time functions with the current date and your time:

 

Please login or register to see this code.

 

 

Edited March 7, 2023 by Joep
Explanation added for unix timestamp

[samuel 27]

Eventually I came up with this script, I wrote myself.

 

I use a relay to a smart implant to detect a brownout, the input trigger i use to trigger the scene.  

 

Please login or register to see this code.