Invert percentage on zwave item for Alexa

Setup, Configuration and Use Items & Sitemaps
1

hello,
is it possible to invert the percentage of an item linked to a zwave channel?
Dimmer Serranda_Cucina_Alexa_Proxy {channel="zwave:device:60d32216:node5:blinds_control"}

The percentage of the blind is corrected configured, but if I try to control it with alexa, I should invert the behaviour of the RolleShutter (connected to alexa through the Dimmer item), so I mean if is possible to change the percentage only for this item?

2

Using a proxy Item and rule, yes.

3

using proxy is ok what is the best logic in the rule to inver the behaviour?

4

What have you tried? We help you, not provide complete solutions like a Help Desk.

How to ask a good question / Help Us Help You - Tutorials & Examples - openHAB Community

5

As @Bruce_Osborne mentioned a proxy item and rule will work. He also gave a link that I encourage everyone to read thru. The more effort and info you provide will result in better and fast responses.

Most that are needing help with a rule can find a similar solution by searching the forum. I did a quick search and found a rule that may help with your situation. Note this example does not use a proxy item but it should be enough to get you started. Play around some and if you hit a snag post what you have, the error logs and we can try to help.

Items:

Dimmer Buero_Colortemp_Test "Büro Farbe" {channel="milight:rgbwwLed:98D86370BBAC:1:ledtemperature"}
Dimmer Buero_Colortemp_Alexa "Büro Farbe" {alexa="ColorTemperatureController.colorTemperatureInKelvin" [range="2700:6500"]

Rule:

rule "Buero_Colortemp_Alexa Commands"
when
  Item Buero_Colortemp_Alexa received command
then
  Buero_Colortemp_Test.sendCommand(100 - receivedCommand as PercentType)
end

rule "Buero_Colortemp_Test Changes"
when
  Item Buero_Colortemp_Test changed
then
  Buero_Colortemp_Alexa.postUpdate(100 - Buero_Colortemp_Test.state as PercentType)
end
2 Likes
6

Thank you H102!
Running RPi 3b+, oH 2.4 Stable.
I also was having an issue and discovered this solution for my item which is an mqtt device. I would think this will work with zigbee and zwave.

  Switch Dining_Room_Light "Dining Room Lights" <light> (Dinner_Time) {channel="mqtt:topic:lightabc:XXXXXX", alexa="Switchable"}

Worked like a charm! I think you can add all of the alexa information in the channel.

Mike