# Wait and transform msg for shutter

**URL:** <https://discourse.nodered.org/t/wait-and-transform-msg-for-shutter/14285>\
**Category:** General\
**Created:** [13 August 2019 16:23 UTC](https://discourse.nodered.org/t/wait-and-transform-msg-for-shutter/14285 "2019-08-13T16:23:12Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![JulBru](https://avatars.discourse-cdn.com/v4/letter/j/22d042/32.png) [@JulBru](https://discourse.nodered.org/u/JulBru)\
**Post date:** [13 August 2019 16:23 UTC](https://discourse.nodered.org/t/wait-and-transform-msg-for-shutter/14285/1 "2019-08-13T16:23:12Z")

</div>

Hey guys,

i recently installed my Shelly 2.5 for shutter control. All workflows should be build in Node Red. It's working out pretty good besides of one thing: i want to rotate my shutter lamella for 500 milliseconds to get another angle. Shelly API has a parameter for this but it's limited to at least 1 second which is too long.

I tried the following

```auto
node.send(msg);
setTimeout(function(){
    msg.payload = "stop";
    node.send(msg);
}, 3000);

```

It works with debug messages, but as soon as i connect the function to the next node, the second message disappears.

> **Flow**
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> "func": "// !! IMPORTANT !!\n// Change global in extracShelly with the right Shelly\n// when copied! \n// !!!!!!!!!!!!!!!\n\n// Define Shelly you want to process\nvar extractShelly = global.get("shelly\_ez\_east\_roller");\n\n// Check for slider Shelly command set\nif (msg.topic === "slider"){\n \n // Prepare concatTopic variable \n var concatTopic = "slider\_XXX\_out";\n concatTopic = concatTopic.replace("XXX",extractShelly);\n \n // Create topic for slider MQTT output\n msg.topic = global.get(concatTopic);\n \n return msg;\n}\n\n// Check for shutter Shelly commmand set\nelse if (msg.topic === "shutter"){\n \n // Prepare concatTopic variable \n var concatTopic = "shutter\_XXX";\n concatTopic = concatTopic.replace("XXX",extractShelly);\n \n // Create topic for slider MQTT output\n msg.topic = global.get(concatTopic);\n \n return msg;\n}\n",  
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> [  
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> ]  
> ]  
> },  
> {  
> "id": "9770f412.efa9c8",  
> "type": "function",  
> "z": "9880ae28.be1db",  
> "name": "shutterPosition",  
> "func": "//Filter msg topics for current slider position\nif (msg.topic.includes("/roller/0/pos")){\n\nreturn msg;\n}",  
> "outputs": 1,  
> "noerr": 0,  
> "x": 412,  
> "y": 520,  
> "wires": [  
> [  
> "c411b688.b5abf8"  
> ]  
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> "type": "function",  
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> "func": "// !! IMPORTANT !!\n// Change global in extracShelly with the right Shelly\n// when copied! \n// !!!!!!!!!!!!!!!\n\n// Define Shelly you want to process\nvar extractShelly = global.get("shelly\_ez\_south\_roller");\n\n// Check for slider Shelly command set\nif (msg.topic === "slider"){\n \n // Prepare concatTopic variable \n var concatTopic = "slider\_XXX\_out";\n concatTopic = concatTopic.replace("XXX",extractShelly);\n \n // Create topic for slider MQTT output\n msg.topic = global.get(concatTopic);\n \n return msg;\n}\n\n// Check for shutter Shelly commmand set\nelse if (msg.topic === "shutter"){\n \n // Prepare concatTopic variable \n var concatTopic = "shutter\_XXX";\n concatTopic = concatTopic.replace("XXX",extractShelly);\n \n // Create topic for slider MQTT output\n msg.topic = global.get(concatTopic);\n \n return msg;\n}\n",  
> "outputs": 1,  
> "noerr": 0,  
> "x": 1332,  
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> "type": "function",  
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> "func": "// !! IMPORTANT !!\n// Change global in extracShelly with the right Shelly\n// when copied! \n// !!!!!!!!!!!!!!!\n\n// Define Shelly you want to process\nvar extractShelly = global.get("shelly\_ez\_west\_roller");\n\n// Check for slider Shelly command set\nif (msg.topic === "slider"){\n \n // Prepare concatTopic variable \n var concatTopic = "slider\_XXX\_out";\n concatTopic = concatTopic.replace("XXX",extractShelly);\n \n // Create topic for slider MQTT output\n msg.topic = global.get(concatTopic);\n \n return msg;\n}\n\n// Check for shutter Shelly commmand set\nelse if (msg.topic === "shutter"){\n \n // Prepare concatTopic variable \n var concatTopic = "shutter\_XXX";\n concatTopic = concatTopic.replace("XXX",extractShelly);\n \n // Create topic for slider MQTT output\n msg.topic = global.get(concatTopic);\n \n return msg;\n}\n",  
> "outputs": 1,  
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> "pauseType": "rate",  
> "timeout": "5",  
> "timeoutUnits": "seconds",  
> "rate": "2",  
> "nbRateUnits": "1",  
> "rateUnits": "second",  
> "randomFirst": "1",  
> "randomLast": "5",  
> "randomUnits": "seconds",  
> "drop": false,  
> "x": 1105,  
> "y": 1166,  
> "wires": [  
> [  
> "b08c7c18.11e1e"  
> ]  
> ]  
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> {  
> "id": "ddcf4c22.57d03",  
> "type": "function",  
> "z": "9880ae28.be1db",  
> "name": "rotateShutterLamella",  
> "func": "// Creates two Messages for short up/down, followed\n// by a stop command\n// The length of the movement is defined in \n// the delay node\n\nfor (var i=0; i\<2; i++){\n \n // Up/down command from button\n if (i === 0){\n node.send (msg);\n }\n \nelse if (i ===1){\n \n // Stop command\n msg.payload = "stop";\n node.send (msg);\n \n }\n}\n\nreturn null;",  
> "outputs": 1,  
> "noerr": 0,  
> "x": 894,  
> "y": 1165,  
> "wires": [  
> [  
> "651c5608.12bc58"  
> ]  
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> },  
> {  
> "id": "6376c96a.d92428",  
> "type": "mqtt-broker",  
> "z": "",  
> "name": "Mosquitto",  
> "broker": "XZY",  
> "port": "1883",  
> "clientid": "Mosquitto",  
> "usetls": false,  
> "compatmode": true,  
> "keepalive": "60",  
> "cleansession": true,  
> "birthTopic": "/Service/nodered/status",  
> "birthQos": "0",  
> "birthPayload": "started",  
> "closeTopic": "",  
> "closePayload": "",  
> "willTopic": "/Service/nodered/status",  
> "willQos": "0",  
> "willPayload": "crashed"  
> },  
> {  
> "id": "8780170a.95d898",  
> "type": "ui\_group",  
> "z": "",  
> "name": "Ostrollo",  
> "tab": "9b56bf48.b9a57",  
> "order": 1,  
> "disp": true,  
> "width": "7",  
> "collapse": true  
> },  
> {  
> "id": "74c77266.16ce0c",  
> "type": "ui\_group",  
> "z": "",  
> "name": "Südrollo",  
> "tab": "9b56bf48.b9a57",  
> "order": 2,  
> "disp": true,  
> "width": "7",  
> "collapse": true  
> },  
> {  
> "id": "d3a6bef1.66637",  
> "type": "ui\_group",  
> "z": "",  
> "name": "Westrollo",  
> "tab": "9b56bf48.b9a57",  
> "order": 3,  
> "disp": true,  
> "width": "7",  
> "collapse": true  
> },  
> {  
> "id": "9b56bf48.b9a57",  
> "type": "ui\_tab",  
> "z": "",  
> "name": "Esszimmer Rollos",  
> "icon": "dashboard",  
> "order": 2,  
> "disabled": false,  
> "hidden": false  
> }  
> ]

---

<div class="post-metadata">

**Author:** ![bakman2](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/bakman2/32/6207_2.png) [@bakman2](https://discourse.nodered.org/u/bakman2)\
**Post date:** [13 August 2019 16:31 UTC](https://discourse.nodered.org/t/wait-and-transform-msg-for-shutter/14285/2 "2019-08-13T16:31:33Z")

</div>

If the shelly API only supports 1 second, how can you override it ?

Why not use a trigger or delay node ? Both can be set in milliseconds.

---

<div class="post-metadata">

**Author:** ![JulBru](https://avatars.discourse-cdn.com/v4/letter/j/22d042/32.png) [@JulBru](https://discourse.nodered.org/u/JulBru)\
**Post date:** [13 August 2019 16:35 UTC](https://discourse.nodered.org/t/wait-and-transform-msg-for-shutter/14285/3 "2019-08-13T16:35:21Z")

</div>

Thank you, i oversaw the "trigger" node - delay only supports 1 second at least as well. Trigger works fine!

---

<div class="post-metadata">

**Author:** ![bakman2](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/bakman2/32/6207_2.png) [@bakman2](https://discourse.nodered.org/u/bakman2)\
**Post date:** [13 August 2019 20:36 UTC](https://discourse.nodered.org/t/wait-and-transform-msg-for-shutter/14285/4 "2019-08-13T20:36:22Z")

</div>

Delay node also supports milliseconds if you use it as delay.