Switch not turnning on

Setup, Configuration and Use Beginners
1

Hello,
I have a problem which I cannot solve.
My switch item bathroom fan(named as ventilator) has a rule that turns it on. The rule works 100% correctly, in the BasicUI the switch turns on and off correctly. But in reality the switch is not turning on.
Switch is connected via qpio.

code:
items
Switch ventilator "ventilator" {qpio="pin:20 activelow:yes initialValue:high" }
sitemap
Switch item=ventilator icon="fan_ceiling"

and for example here is the code for the other switch which works just fine.
items
Switch luc "luc" { gpio="pin:26 activelow:yes initialValue:high" }
sitemap
Switch item=luc icon="lightbulb"

Tried different pins and no success.

and here is the rule for bathroom fan.

val Number maxHumidity = 90
val Number minHumidity = 70

rule "fanBathroom"
  when
    Item Humidity changed
  then
    logInfo("FanBathroom", "Humidity changed to {}, ventilator is {}", Humidity.state, ventilator.state)
    if (ventilator.state != ON) {
      if ((Humidity.state as Number) > maxHumidity) {
        logInfo("FanBathroom", "Humidity {} above threshold of {}", Humidity.state, maxHumidity)
        ventilator.sendCommand(ON)
      }
    }
    if (ventilator.state == ON) {
      if ((Humidity.state as Number) < minHumidity) {
        logInfo("FanBathroom", "Humidity {} below threshold of {}", Humidity.state, minHumidity)
        ventilator.sendCommand(OFF)
      }
    }
 end
2

Not sure I understand fully, but what I am reading is the following:

  • your rule triggers and executes correctly
  • your sitemap indicates the desired state
  • only in reality your fan does not come on
  • and your setup for ventilator is the same as that for luc, which actually does work

If the above is correct, then I would venture to guess that you are having a hardware problem. As on the software side everything appears to work as intended. The use of GPIO’s can be tricky and you would need to do hardware debugging; e.g., check if the GPIO actually changes state as intended by using a LED or similar; if so, check what happened in your circuit that deals with the fan, etc.
But maybe I am off base here…

3

I doubt you have a qpio binding
Your Item that works is bound to gpio

4

Fixed the problem.
Solution
item
Switch fan "ventilator" { gpio="pin:20 activelow:yes initialValue:high" }

sitemap
Switch item=fan icon="fan_ceiling"

rule
val Number maxHumidity = 90
val Number minHumidity = 70

rule "fanBathroom"
  when
    Item Humidity changed
  then
    logInfo("FanBathroom", "Humidity changed to {}, ventilator is {}", Humidity.state, fan.state)
    if (fan.state != ON) {
      if ((Humidity.state as Number) > maxHumidity) {
        logInfo("FanBathroom", "Humidity {} above threshold of {}", Humidity.state, maxHumidity)
        fan.sendCommand(ON)
      }
    }
    if (fan.state == ON) {
      if ((Humidity.state as Number) < minHumidity) {
        logInfo("FanBathroom", "Humidity {} below threshold of {}", Humidity.state, minHumidity)
        fan.sendCommand(OFF)
      }
    }
 end
5

Hmmm, just changing the name of the item shouldn’t be the solution…

1 Like
6

You are right, but I’ve tried many things changed relay, pins,… and none of these worked.

7

Well, spelling gpio in the binding part of the Item definition rather than qpio probably has something to do with it.

4 Likes
8

Good catch!