Change brightness of a group of dimmers base on virtual device

[Guest]

Use case:

change brightness of a group of dimmers based on a virtual device (ref 3858 here) that ranges from -100 to 100
(all dimmers have a 0-100 range)
The individual changes for each dimmer must be relative to the existing values and can't go below 0 or above 100.

The intent is to change multiple dimmers brightness up/down relative to existing values.


Pretty sure I'm on the right track but I need to assess the 0-100 resulting value and only apply if within range.

where below it checks the current value and applies the change if within range.


if ($DEVICEVALUE <= 100 and $DEVICEVALUE >= 0, $DEVICEVALUE + $$DVR:3858:, $DEVICEVALUE )





Example of expected behavior for 3 dimmers

Dimmer 1= 25
Dimmer 2 = 90
Dimmer 3= 100

If virtual device is set to 25:

Dimmer 1= 50
Dimmer 2 = 100
Dimmer 3= 100

then If virtual device is set to -25:

Dimmer 1= 25
Dimmer 2 = 75
Dimmer 3= 75


then If virtual device is set to -80:

Dimmer 1= 0
Dimmer 2 = 0
Dimmer 3= 0

[Wade]

If you want to check the result, then the operation needs to be in the first argument of the IF. How about this?

if ($DEVICEVALUE + $$DVR:3858: >= 100, 100, if ($DEVICEVALUE + $$DVR:3858: <=0, 0, $DEVICEVALUE + $$DVR:3858: ))

Double-check my syntax.

[Guest]

Works perfectly
Didn't think you could use another IF-ELSE within the operation
Thanks Wade

Yann

[Wade]

Glad I could help.