script to send mqtt message with percentage

megamarco83 · Post by **megamarco83** » Sunday 23 February 2020 23:40

hi, i'm playing a bit with esp8266 this time using tasmota firmware.
what i would like to implement is a script that read the percentage of sliding of dummy device type: inverted blind with percentage and send the conresponding value to esp.

the mqtt message to send is this one:
cmnd/<devicetopic>/shutterposition<Number> <%>

example
if i have this devices on esp that has name: tamota_blind_1 where i have:
1) blind_kitchen
2) blind_kitchen2
3) blind_kitchen3

and another esp that has name: tasmota_blind_2 where i have:
1) blind_bathroom
2) blind_stairs

and i move the percentage of blind stairs at 25%

the script should send to esp tasmota_blind_2 this message:
cmnd/tasmota_blind_2/shutterposition2 25

of course when the message come from esp to domoticz, domoticz should not react.
the message come from esp to domoticz when some one trigger gpio of esp, or when someone use the web interface of esp, in bothcase the command that comes from esp is:
publish domoticz/in {"idx":154,"nvalue":2,"svalue":"%value%"}
of course esp will adress the correct idx and %value% to set the conresponding blind and percentage.

last thing, should be better to have one "blind_master"
that can controll all blind at same % sending out in parallel all commands: cmnd/<devicetopic>/shutterposition<Number> <%>

salvacalatayud · Thursday 27 February 2020 9:08

megamarco83 wrote: Sunday 23 February 2020 23:40 hi, i'm playing a bit with esp8266 this time using tasmota firmware.
what i would like to implement is a script that read the percentage of sliding of dummy device type: inverted blind with percentage and send the conresponding value to esp.

the mqtt message to send is this one:
cmnd/<devicetopic>/shutterposition<Number> <%>

example
if i have this devices on esp that has name: tamota_blind_1 where i have:
1) blind_kitchen
2) blind_kitchen2
3) blind_kitchen3

and another esp that has name: tasmota_blind_2 where i have:
1) blind_bathroom
2) blind_stairs

and i move the percentage of blind stairs at 25%

the script should send to esp tasmota_blind_2 this message:
cmnd/tasmota_blind_2/shutterposition2 25

of course when the message come from esp to domoticz, domoticz should not react.
the message come from esp to domoticz when some one trigger gpio of esp, or when someone use the web interface of esp, in bothcase the command that comes from esp is:
publish domoticz/in {"idx":154,"nvalue":2,"svalue":"%value%"}
of course esp will adress the correct idx and %value% to set the conresponding blind and percentage.

last thing, should be better to have one "blind_master"
that can controll all blind at same % sending out in parallel all commands: cmnd/<devicetopic>/shutterposition<Number> <%>

I'm now using shelly to control blinds, but some time ago I used this with tasmota:

https://github.com/kungknut/Domoticz-MQTT-Translator

You can check: https://www.domoticz.com/forum/viewtopi ... 51&t=25604

megamarco83 · Post by **megamarco83** » Thursday 27 February 2020 20:19

salvacalatayud wrote: Thursday 27 February 2020 9:08
I'm now using shelly to control blinds, but some time ago I used this with tasmota:

https://github.com/kungknut/Domoticz-MQTT-Translator

You can check: https://www.domoticz.com/forum/viewtopi ... 51&t=25604

hi, thanks for reply.
i install today nodered on raspberry with buster.
i import your script and give my mqtt adrress and domoticz ip:port

then i create inside domoticz uservar type string.
here first question:
i try to control 1st blind so i guess my string should be:
{"MQTT":{"devIdx" : 111,"inTopic" : "publish domoticz/in {"idx":111,"nvalue":2,"svalue":"%value%"}","outTopic" : "cmnd/tasmota_blind_1/shutterposition","slope" : 1, "intercept" : 0,"limits" : "0,0","type" : "dimmer"}}
but domoticz say that's can be saved....maybe too long?
if yes, how to manage for example 8 blinds?
i set as comand from domoticz:
cmnd/tasmota_blind_1/shutterposition
after shutterposition should be put a number that is the percentage to reach
example:
cmnd/tasmota_blind_1/shutterposition 22
in this case tasmota will move blind1 at 22%

the comand that tasmota should send to domoticz if i move slide on web page of tasmota should be:
publish domoticz/in {"idx":111,"nvalue":2,"svalue":"%value%"}
will be nodered to taking care about that?

with wall switch how to menage?
for example shutter1 has 2switch: switch1 and switch2
short press of switch1 => trigger 1second relay1
long press of switch1 => trigger relay1 till reach 100%open
short press of switch2 => trigger 1second relay2
long press of switch2 => trigger relay2 till reach 100%close
who will manage that?

i create inside tasmota a rule like this:
rule2 on switch1#state=2 do backlog power1 on;delay 10;power1 off endon on switch1#state=3 do power1 on endon
on switch2#state=2 do backlog power2 on;delay 10;power2 off endon on switch2#state=3 do power2 on endon
on switch3#state=2 do backlog power3 on;delay 10;power3 off endon on switch3#state=3 do power3 on endon
on switch4#state=2 do backlog power4 on;delay 10;power4 off endon on switch4#state=3 do power4 on endon

in this case i trigger the relay and due to do this, tasmota should send something, and nodered should automatically report the percentage in domoticz, without adding nothing else, correct?

anyway just to havse a first try i cut from the uservar string the inTopic
so used the string that i used is:
{"MQTT":{"devIdx" : 111,"inTopic" : "","outTopic" : "cmnd/tasmota_blind_1/shutterposition","slope" : 1, "intercept" : 0,"limits" : "0,0","type" : "dimmer"}}

: Screenshot_2020-02-27 Domoticz.png (35.02 KiB) Viewed 4732 times

idx28 is the numebr of uservar created for nodered

then i try to slide the dummy device type blind inverted, but nothing happened.

i try to add a debug device to nodered as you can see in the pictures:

: Screenshot_2020-02-27 Node-RED 192 168 0 105.png (42.57 KiB) Viewed 4732 times

that's are part of the errors.