Shelly roller shutter : setup item and Position value

Add-ons Bindings
,
1

Hello,

added item rollershutter using shelly2 via mqtt1 binding.

Generally Working, but position in percent is reversed by shelly.

Mqtt reporting 0 when shutter is closed. But the standard defined by KNX is:
100% = closed
0% = open

So this is my solution (as long as shelly not fixing the output) :

items/shelly.items:

Rollershutter Rollladen_wz_westen “Rollladen westen [%.0f %%]” {mqtt=">[tux:shellies/shellyswitch-55B74B/roller/0/command:command:*:MAP(shelly-rollladen.map)], <[tux:shellies/shellyswitch-55B74B/roller/0/pos:state:JS(rollershutter.js)]" , autoupdate=“false” }

transform/shelly-rollladen.map
OFF=off
ON=on
off=OFF
on=ON
UP=open
DOWN=close
STOP=stop
close=0
open=100
stop=? (0 or 100?) :slight_smile:
0=close
100=open

transform/rollershutter.js:

(function(i) {
// shelly 0% = Closed
 // oh2 0% = open

    //The following script converts [0% - 100%] to  [100% - 0%].
var percent_shelly = parseInt(i, 10);

var percent_oh = (100.0 - percent_shelly);

//Return result with one decimal accuracy
    return percent_oh.toFixed(1);
})(input)

The % value for openhab is evaluated as
100% - shelly-position.

So, the shutter icon will show correct the State/Position.

BR/
Peter

2 Likes
2

With the MQTT1 binding the only thing I can think of is to switch to the JavaScript transform and do the mapping and swapping in the one transform.

Or you can use a proxy Item and as rule to calculate correct percentage.

With the MQTT2 binding, you can chain transforms so you’d only need a simple JavaScript to calculate the correct percent and continue to use the map transform.

3

Thank you very much for your script. It solved to me some problems on the event.log jejej

Do You know how can i control the % of the roller shutter. I mean to send “open 20%”
I see that if you set in the official app of shelly a 20% it send by mqtt the toppic: shellies/shellyswitch25-E59E6D/roller/0/pos 20
But i cant do it in openhab directly.

I want to do that because i am trying that when the sun is on a certain position the roller shutter open or close some porcentaje

Sorry for my english!! :smile:

4

Hello Nykroy,

i added later a shelly-shutter item “xx_pos”: to adress topic “…/roller/0/command/pos”

Rollershutter Rollladen_wz_westen_pos "Rollladen westen pos [%.0f %%]" <rollershutter> {mqtt=">[tux:shellies/shellyswitch-x5B74B/roller/0/command/pos:command:*:default], <[tux:shellies/shellyswitch-x5B74B/roller/0/pos:state:JS(rollershutter.js)]" , autoupdate="false" }

i use this to close the blinds at mid day if door is closed and not much clouds and not already closed more deep

rules/shelly.rule

      // Current cloudiness < 50%
        if ( myCloudiness < 50 )
        {
                // nur herunterfahren, nicht wieder hochfahren!
                if (Rollladen_wz_westen_pos.state < (100 - 50) )   # inverted state in shelly
                {
                        Rollladen_wz_westen_pos.sendCommand(50)  # send inverted POS% to shelly

so the old commands
Rollladen_wz_westen.sendCommand(“UP”)
Rollladen_wz_westen.sendCommand(“DOWN”)
are equal to
Rollladen_wz_westen_pos.sendCommand(0)
Rollladen_wz_westen_pos.sendCommand(100)

have fun!

BR/
Peter

1 Like
5

Thank you!!! Today i am going to try it!

6

thanks a lot! helped me a lot inverting values for Shelly 2.5 with MQTT 2.5 Binding:

Type rollershutter : control “control” [ stateTopic=“shellies/shellyswitch25-5D98C1/roller/0/pos”, commandTopic=“shellies/shellyswitch25-5D98C1/roller/0/command/pos”, transformationPattern=“JS:InvertPercent.js”, transformationPatternOut=“JS:InvertPercent.js” ]