# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=803

[Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md)

**Page:** 804

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## [Flow firebase modify always error](https://discourse.nodered.org/t/flow-firebase-modify-always-error/20807)

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**Author:** [@Artwin](https://discourse.nodered.org/u/Artwin)\
**Replies:** 1\
**Last updated:** [24 January 2020 13:18 UTC](https://discourse.nodered.org/t/flow-firebase-modify-always-error/20807 "2020-01-24T13:18:45Z")

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every time I input firebase URL and I use auth type json web token, and fill Child Path with "Sensor", Method with "Push ()" and value with "msg.payload" and done. then I deploy and immediately my Node-RED stops with …

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## [ELIFECYCLE error FIREBASE](https://discourse.nodered.org/t/elifecycle-error-firebase/20795)

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**Author:** [@Artwin](https://discourse.nodered.org/u/Artwin)\
**Replies:** 4\
**Last updated:** [24 January 2020 11:58 UTC](https://discourse.nodered.org/t/elifecycle-error-firebase/20795 "2020-01-24T11:58:03Z")

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I have a problem, when I configure FIREBASE on node-RED pallete firebase-modify I accidentally fill in the firebaseny data incorrectly, how do I restore it as before without deleting existing data?

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## [Missing options inside the switch node](https://discourse.nodered.org/t/missing-options-inside-the-switch-node/20806)

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**Author:** [@vapourlyric](https://discourse.nodered.org/u/vapourlyric)\
**Replies:** 1\
**Last updated:** [24 January 2020 11:11 UTC](https://discourse.nodered.org/t/missing-options-inside-the-switch-node/20806 "2020-01-24T11:11:42Z")

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Helle everyone! Today I realized that certain options inside the switch node seem to be missing. An example: The change node has the following options in the dropdown menu: msg.; flow.; global.; String; Number; boolean…

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## [Raspberry Pi - contrib-python-function won't work](https://discourse.nodered.org/t/raspberry-pi-contrib-python-function-wont-work/20766)

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**Author:** [@pawelkon](https://discourse.nodered.org/u/pawelkon)\
**Replies:** 8\
**Last updated:** [24 January 2020 07:19 UTC](https://discourse.nodered.org/t/raspberry-pi-contrib-python-function-wont-work/20766 "2020-01-24T07:19:29Z")

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Hello all, My name is Pawel and this is my first post on this forum. I would like to set up node, to take MQTT input and display on the MAX7219 device using Node-Red and Raspberry Pi4. I have python script downloaded f…

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## [Http request issue](https://discourse.nodered.org/t/http-request-issue/20746)

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**Author:** [@iskender](https://discourse.nodered.org/u/iskender)\
**Replies:** 6\
**Last updated:** [24 January 2020 01:11 UTC](https://discourse.nodered.org/t/http-request-issue/20746 "2020-01-24T01:11:09Z")

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Hi everyone, I have a rather strange problem with an http-request node. I have 2 nodes. One has 192.168.1.128/data/?statistics={"instagram\_reading":"{{payload}}"} the other has http://esp32.local/data/?statistics={"…

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## [Config on a Synology install using the docker GUI](https://discourse.nodered.org/t/config-on-a-synology-install-using-the-docker-gui/20789)

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**Author:** [@dougle03](https://discourse.nodered.org/u/dougle03)\
**Replies:** 0\
**Last updated:** [23 January 2020 23:12 UTC](https://discourse.nodered.org/t/config-on-a-synology-install-using-the-docker-gui/20789 "2020-01-23T23:12:58Z")

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Hi all, I've installed NodeRed on a Synology NAS using the Docker GUI application, I'm up and running and imported my current flow file and spent an age adding in all the missing nodes. Once thing I don't know how to d…

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## [How to use batch node with concatenate sequences mode](https://discourse.nodered.org/t/how-to-use-batch-node-with-concatenate-sequences-mode/20709)

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**Author:** [@ab73863](https://discourse.nodered.org/u/ab73863)\
**Replies:** 11\
**Last updated:** [23 January 2020 23:11 UTC](https://discourse.nodered.org/t/how-to-use-batch-node-with-concatenate-sequences-mode/20709 "2020-01-23T23:11:39Z")

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Hello, I am trying to understand the batch node with concatenate sequences mode. I am not able find any examples related to usage of this node in concatenate sequences mode. Could anyone please share a sample or pointe…

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## [Spotify to google home](https://discourse.nodered.org/t/spotify-to-google-home/20782)

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**Author:** [@Folgore](https://discourse.nodered.org/u/Folgore)\
**Replies:** 0\
**Last updated:** [23 January 2020 20:28 UTC](https://discourse.nodered.org/t/spotify-to-google-home/20782 "2020-01-23T20:28:55Z")

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Hi, do you think it is possible from node-red to send a command to play a song on google home from spotify? Thank's

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## [Replace variable name from object?](https://discourse.nodered.org/t/replace-variable-name-from-object/20592)

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**Author:** [@slurpey](https://discourse.nodered.org/u/slurpey)\
**Replies:** 2\
**Last updated:** [23 January 2020 20:08 UTC](https://discourse.nodered.org/t/replace-variable-name-from-object/20592 "2020-01-23T20:08:08Z")

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Hi, I'm receiving an IFTTT webhookrelay from Google Home object and I'm trying to use its content. It outputs this: { "type": "webhook", "meta": { "id": "815a9995-208e-44fd-be82-45ec211…

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## [Value from slider](https://discourse.nodered.org/t/value-from-slider/20757)

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**Author:** [@danny\_v1](https://discourse.nodered.org/u/danny_v1)\
**Replies:** 5\
**Last updated:** [23 January 2020 18:44 UTC](https://discourse.nodered.org/t/value-from-slider/20757 "2020-01-23T18:44:28Z")

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Hi to all, first sorry for my english, sometimes it is not the best english. I am new to node red and I have some beginner questions. My actual problem: I want to send a massage to an esp contoller with mqtt. The com…

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## [Blynk v pin value to node red](https://discourse.nodered.org/t/blynk-v-pin-value-to-node-red/20780)

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**Author:** [@scottriggle](https://discourse.nodered.org/u/scottriggle)\
**Replies:** 2\
**Last updated:** [23 January 2020 18:41 UTC](https://discourse.nodered.org/t/blynk-v-pin-value-to-node-red/20780 "2020-01-23T18:41:28Z")

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I'm confused with using the node-red-contrib-blynk-ws. Can anyone point me to a way to simply receive a value from Blynk. Like temperature or reed switch hooked up to a virtual pin? I see samples of you have to use a wri…

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## [RBE node in narrowband](https://discourse.nodered.org/t/rbe-node-in-narrowband/20086)

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**Author:** [@Andrei](https://discourse.nodered.org/u/Andrei)\
**Replies:** 3\
**Last updated:** [23 January 2020 18:40 UTC](https://discourse.nodered.org/t/rbe-node-in-narrowband/20086 "2020-01-23T18:40:40Z")

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I wonder how the "start value" field is used by the RBE node in narrowband. I thought it would be used as the last input value but could not make it work that way. Also I am puzzled why this field exists when the select…

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## [How do I type an acute accent](https://discourse.nodered.org/t/how-do-i-type-an-acute-accent/20778)

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**Author:** [@Lavio](https://discourse.nodered.org/u/Lavio)\
**Replies:** 4\
**Last updated:** [23 January 2020 17:33 UTC](https://discourse.nodered.org/t/how-do-i-type-an-acute-accent/20778 "2020-01-23T17:33:35Z")

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i want to do a keyboard. how i do the acute accent it´s there a function to wait the letter

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## [Unable to make homekit-bridged work](https://discourse.nodered.org/t/unable-to-make-homekit-bridged-work/20772)

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**Author:** [@bplatypus](https://discourse.nodered.org/u/bplatypus)\
**Replies:** 8\
**Last updated:** [23 January 2020 16:24 UTC](https://discourse.nodered.org/t/unable-to-make-homekit-bridged-work/20772 "2020-01-23T16:24:53Z")

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Hi everyone! I installed node-red on docker on my Synology NAS (ds1819+). Installation was really easy and it works perfectly! I then installed the Philips-Hue stuff and I can control my hue accessories from node-red a…

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## [Arduino node red connection](https://discourse.nodered.org/t/arduino-node-red-connection/20765)

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**Author:** [@Prashu](https://discourse.nodered.org/u/Prashu)\
**Replies:** 1\
**Last updated:** [23 January 2020 13:51 UTC](https://discourse.nodered.org/t/arduino-node-red-connection/20765 "2020-01-23T13:51:28Z")

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How can I read the string from serial input and print the output string in serial out at the same time via same serial port in node-red.

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## [How node red is better than cooja](https://discourse.nodered.org/t/how-node-red-is-better-than-cooja/20755)

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**Author:** [@sandeep](https://discourse.nodered.org/u/sandeep)\
**Replies:** 5\
**Last updated:** [23 January 2020 13:23 UTC](https://discourse.nodered.org/t/how-node-red-is-better-than-cooja/20755 "2020-01-23T13:23:18Z")

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I am working on IoT data formats. i am in confusion to choose a tool for data format representation and process. can somebody help with this . should i go with node-red or cooja.

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## [Reading influxdb data from another linux system](https://discourse.nodered.org/t/reading-influxdb-data-from-another-linux-system/20762)

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**Author:** [@YLM-UJM](https://discourse.nodered.org/u/YLM-UJM)\
**Replies:** 1\
**Last updated:** [23 January 2020 11:43 UTC](https://discourse.nodered.org/t/reading-influxdb-data-from-another-linux-system/20762 "2020-01-23T11:43:57Z")

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I have my Rsp Pi using node red to process some sensors data, then I am saving the data into influxDb. Now I'd like to be able to access my database (influxdb) from my laptop (running with linux). Someone has ideas on ho…

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## [Adding the first 5 values to compute offset](https://discourse.nodered.org/t/adding-the-first-5-values-to-compute-offset/20616)

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**Author:** [@YLM-UJM](https://discourse.nodered.org/u/YLM-UJM)\
**Replies:** 10\
**Last updated:** [23 January 2020 09:24 UTC](https://discourse.nodered.org/t/adding-the-first-5-values-to-compute-offset/20616 "2020-01-23T09:24:39Z")

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Hi, I have a load cell which a receive the value using MQQT (from my python script), then I would like to save the first 5 value coming from MQTT to compute the offset of my load cell. Then when I will have my offset, I…

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## [Send only on changes (for slow modbus poll) - newbie](https://discourse.nodered.org/t/send-only-on-changes-for-slow-modbus-poll-newbie/20557)

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**Author:** [@PPz](https://discourse.nodered.org/u/PPz)\
**Replies:** 6\
**Last updated:** [23 January 2020 01:11 UTC](https://discourse.nodered.org/t/send-only-on-changes-for-slow-modbus-poll-newbie/20557 "2020-01-23T01:11:39Z")

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I poll data from a modbus master. 1 poll with 20 consecutive addresses (for now, will increase that later) every 10 seconds. My goal is to send them (MQTT) every minute, or even slower (but I have some modbus connection…

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## [Join, Getting order incorrect sometimes](https://discourse.nodered.org/t/join-getting-order-incorrect-sometimes/20331)

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**Author:** [@ScheepersJohan](https://discourse.nodered.org/u/ScheepersJohan)\
**Replies:** 7\
**Last updated:** [22 January 2020 22:44 UTC](https://discourse.nodered.org/t/join-getting-order-incorrect-sometimes/20331 "2020-01-22T22:44:29Z")

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Hi, I have several payloads I need to joint to form a string, I have a very long winded way and it is cumbersome, how do I stream line it? As sometimes the order gets muddled up.

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## [Multiple inputs in function](https://discourse.nodered.org/t/multiple-inputs-in-function/20738)

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**Author:** [@HaloElite](https://discourse.nodered.org/u/HaloElite)\
**Replies:** 4\
**Last updated:** [22 January 2020 21:07 UTC](https://discourse.nodered.org/t/multiple-inputs-in-function/20738 "2020-01-22T21:07:39Z")

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I'm trying to handle multiple msg.payload.subobjects to a function node. But when doing so I always get the error ""TypeError: Cannot read property '0' of undefined" ". When I try to get the data with an debug node, ever…

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## [Error: node not deployed - Cant delete the Error](https://discourse.nodered.org/t/error-node-not-deployed-cant-delete-the-error/20361)

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**Author:** [@ScheepersJohan](https://discourse.nodered.org/u/ScheepersJohan)\
**Replies:** 10\
**Last updated:** [22 January 2020 20:27 UTC](https://discourse.nodered.org/t/error-node-not-deployed-cant-delete-the-error/20361 "2020-01-22T20:27:21Z")

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I have a very simple flow. \[{"id":"39737b3.0628584","type":"debug","z":"66472984.929868","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":850,"y":120,"wires":}\] I have co…

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## [HASSIO to multiple instances of NodeRed?](https://discourse.nodered.org/t/hassio-to-multiple-instances-of-nodered/20729)

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**Author:** [@dougle03](https://discourse.nodered.org/u/dougle03)\
**Replies:** 2\
**Last updated:** [22 January 2020 20:07 UTC](https://discourse.nodered.org/t/hassio-to-multiple-instances-of-nodered/20729 "2020-01-22T20:07:22Z")

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Hi, I've got HASSIO installed on a Pi 3+ with the NodeRed integration running. NodeRed frequently disconnects with an NGinx warning. Thinking that it's all a bit too much for the Pi3+ (I've a lot of devices and integr…

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## [Query Data from influxdb via HTTP GET method](https://discourse.nodered.org/t/query-data-from-influxdb-via-http-get-method/20676)

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**Author:** [@user2929](https://discourse.nodered.org/u/user2929)\
**Replies:** 4\
**Last updated:** [22 January 2020 20:04 UTC](https://discourse.nodered.org/t/query-data-from-influxdb-via-http-get-method/20676 "2020-01-22T20:04:06Z")

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Hello there everyone, I am rather new to Node-Red, so please bear with me. What I have: I´ve got a Node-Red Flow working on a Unipi Neuron M503, which logs sensor values every second to an influxdb measurement table. …

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## [How to put a returned JSON object into a variable](https://discourse.nodered.org/t/how-to-put-a-returned-json-object-into-a-variable/20741)

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**Author:** [@grant1](https://discourse.nodered.org/u/grant1)\
**Replies:** 1\
**Last updated:** [22 January 2020 19:18 UTC](https://discourse.nodered.org/t/how-to-put-a-returned-json-object-into-a-variable/20741 "2020-01-22T19:18:57Z")

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We have an outdoor tank with a telemetry unit that we can access via an HTML GET request. I put the GET request into NodeRED and have it outputting the JSON object as an array, but I only care about the 2 things highlig…

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## [Help with bringing variables to dashboard for Blinking example](https://discourse.nodered.org/t/help-with-bringing-variables-to-dashboard-for-blinking-example/20337)

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**Author:** [@Argus](https://discourse.nodered.org/u/Argus)\
**Replies:** 1\
**Last updated:** [22 January 2020 19:16 UTC](https://discourse.nodered.org/t/help-with-bringing-variables-to-dashboard-for-blinking-example/20337 "2020-01-22T19:16:29Z")

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Hi all I new to node-red and I trying to toggle the output on my rpi. I found the dsm node and the Blinking example which does everything I want, and here's the but, I'd like to bring the the variables to the dashboard …

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## [First after OS boot Schedex-based action missing](https://discourse.nodered.org/t/first-after-os-boot-schedex-based-action-missing/19685)

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**Author:** [@igrowing](https://discourse.nodered.org/u/igrowing)\
**Replies:** 2\
**Last updated:** [29 December 2019 19:31 UTC](https://discourse.nodered.org/t/first-after-os-boot-schedex-based-action-missing/19685 "2019-12-29T19:31:15Z")

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Hi guys, \[ { "id": "c7218fca.498b6", "type": "ui\_switch", "z": "f1073339.c03c3", "name": "enable\_light", "label": "Enable Auto Light", "group": "e1a7cd3b.e5b6", …

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## [How to split array in function pallete](https://discourse.nodered.org/t/how-to-split-array-in-function-pallete/20733)

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**Author:** [@Artwin](https://discourse.nodered.org/u/Artwin)\
**Replies:** 11\
**Last updated:** [22 January 2020 19:10 UTC](https://discourse.nodered.org/t/how-to-split-array-in-function-pallete/20733 "2020-01-22T19:10:56Z")

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Hi my name artwin, can you help me solve this problem, I have a join palette that contains an array with two values, then I want to split the two values ​​in the array into two variables, how do I do that? Thanks

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## [Insert data to Influxdb](https://discourse.nodered.org/t/insert-data-to-influxdb/20689)

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**Author:** [@Mrfox](https://discourse.nodered.org/u/Mrfox)\
**Replies:** 4\
**Last updated:** [22 January 2020 17:04 UTC](https://discourse.nodered.org/t/insert-data-to-influxdb/20689 "2020-01-22T17:04:42Z")

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Hi, I am receiving data from an Aidon Energy meter via the Aidion-node, I am getting it into Node Red in the right format. I have defined the message in a Function-node like this: msg.payload = { obis\_list\_version:…

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## [Newbie warning... Forming messages for HASSIO nofity](https://discourse.nodered.org/t/newbie-warning-forming-messages-for-hassio-nofity/20727)

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**Author:** [@dougle03](https://discourse.nodered.org/u/dougle03)\
**Replies:** 0\
**Last updated:** [22 January 2020 15:05 UTC](https://discourse.nodered.org/t/newbie-warning-forming-messages-for-hassio-nofity/20727 "2020-01-22T15:05:46Z")

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Hi all, Very much a newbie here; I'm battling to generate a notify output message to HASSIO as a result of a flow. I'm monitoring the status of a number of devices that present their status as 'on or 'off' I've currentl…

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