# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=847

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

**Page:** 848

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## [Help with shell command to get a result in a node](https://discourse.nodered.org/t/help-with-shell-command-to-get-a-result-in-a-node/15548)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 11\
**Last updated:** [16 September 2019 20:48 UTC](https://discourse.nodered.org/t/help-with-shell-command-to-get-a-result-in-a-node/15548 "2019-09-16T20:48:35Z")

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I am wanting to fix a message I am getting. This is the message: {"\_msgid":"3c5b556c.b18d0a","topic":"","payload":" Used\\n 688\\n","rc":{"code":0}} What I want to get is the amount of usage on a USB stick and map it to…

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## [Node-red-contrib-config broken in Node-RED beta 1.0.0?](https://discourse.nodered.org/t/node-red-contrib-config-broken-in-node-red-beta-1-0-0/15591)

<div class="topic-metadata">

**Author:** [@dudleyjosh](https://discourse.nodered.org/u/dudleyjosh)\
**Replies:** 4\
**Last updated:** [16 September 2019 19:11 UTC](https://discourse.nodered.org/t/node-red-contrib-config-broken-in-node-red-beta-1-0-0/15591 "2019-09-16T19:11:27Z")

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Has anyone else noticed that 'node-red-contrib-config' seems to be broken in v1.0.0 betas of Node-RED?

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## [\[MinorDocIssue\]Templates and non alphanumeric messages](https://discourse.nodered.org/t/minordocissue-templates-and-non-alphanumeric-messages/15595)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 0\
**Last updated:** [16 September 2019 19:09 UTC](https://discourse.nodered.org/t/minordocissue-templates-and-non-alphanumeric-messages/15595 "2019-09-16T19:09:26Z")

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I was sending an image (converted to Base64 string) thru a template and I couldn't decode it back to an image afterwards Eventually after testing out simpler flow, I realised that the template was seeing non-alphanumeri…

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## [Mp3 playlist through HTTP out](https://discourse.nodered.org/t/mp3-playlist-through-http-out/15541)

<div class="topic-metadata">

**Author:** [@gilad](https://discourse.nodered.org/u/gilad)\
**Replies:** 11\
**Last updated:** [16 September 2019 18:30 UTC](https://discourse.nodered.org/t/mp3-playlist-through-http-out/15541 "2019-09-16T18:30:17Z")

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Hi all, I'm struggling with this for a while. I'm trying to play all mp3 urls, one-by-one, through the HTTP out node. It works only when the function node is: msg.payload = msg.payload\[0\].url; return msg; But when I'…

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## [Sending data to Firestore using MQTT](https://discourse.nodered.org/t/sending-data-to-firestore-using-mqtt/13678)

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**Author:** [@Mustaqim](https://discourse.nodered.org/u/Mustaqim)\
**Replies:** 3\
**Last updated:** [16 September 2019 17:34 UTC](https://discourse.nodered.org/t/sending-data-to-firestore-using-mqtt/13678 "2019-09-16T17:34:31Z")

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Hi, I am trying to send data from Ubidots using MQTT to Firestore. I manage to send the data but it doesn't the way I wanted because I want to send it to specify field and I want the data update in real time. Any ideas?…

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## [Trying to XOR a hexidecimal string](https://discourse.nodered.org/t/trying-to-xor-a-hexidecimal-string/15053)

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**Author:** [@Stylo](https://discourse.nodered.org/u/Stylo)\
**Replies:** 6\
**Last updated:** [16 September 2019 13:56 UTC](https://discourse.nodered.org/t/trying-to-xor-a-hexidecimal-string/15053 "2019-09-16T13:56:18Z")

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Hi there, I'm working on a project in which I'm sending and receiving hexadecimal message strings from a bluetooth gateway via MQTT. My problem is; I need to XOR each hexidecimal string to make sure it's correct when p…

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## [ModBus Write Node](https://discourse.nodered.org/t/modbus-write-node/15567)

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**Author:** [@injector22](https://discourse.nodered.org/u/injector22)\
**Replies:** 2\
**Last updated:** [16 September 2019 11:30 UTC](https://discourse.nodered.org/t/modbus-write-node/15567 "2019-09-16T11:30:56Z")

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I have a power meter that uses ModBus and I've figured out how to read data from the bus using the modbus read and getter node. However, now I'm trying to write to the module to change the address and I'm not sure how t…

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## [InfluxDB insert data](https://discourse.nodered.org/t/influxdb-insert-data/15564)

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**Author:** [@rchen](https://discourse.nodered.org/u/rchen)\
**Replies:** 12\
**Last updated:** [15 September 2019 22:15 UTC](https://discourse.nodered.org/t/influxdb-insert-data/15564 "2019-09-15T22:15:12Z")

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Hi all, I'm working with node red about 5 days ago, so I'm newbie. Why this flow didn't insert any record in influxdb? What do I need to do to insert records to influxdb? \[{"id":"857e5728.5e74a8","type":"function","z…

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## [Missing a Tab but still working in background](https://discourse.nodered.org/t/missing-a-tab-but-still-working-in-background/15539)

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**Author:** [@biz](https://discourse.nodered.org/u/biz)\
**Replies:** 12\
**Last updated:** [15 September 2019 20:46 UTC](https://discourse.nodered.org/t/missing-a-tab-but-still-working-in-background/15539 "2019-09-15T20:46:17Z")

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Hello All. I am in a strange situation. In the node red configuration page. I have the tabs up top. All of a sudden today I am missing a tab... I don't know why it doesn't display. I know it is still technically there an…

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## [Http in HEAD Method](https://discourse.nodered.org/t/http-in-head-method/15546)

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**Author:** [@rafaolivas](https://discourse.nodered.org/u/rafaolivas)\
**Replies:** 5\
**Last updated:** [15 September 2019 18:18 UTC](https://discourse.nodered.org/t/http-in-head-method/15546 "2019-09-15T18:18:46Z")

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Hello! I'm trying to add an http in node that listens to a HEAD method request but this method is not in the list. Is there any workaround for this? Maybe a global variable that I can set when Node-RED starts or someth…

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## [Node-RED "loses" flows](https://discourse.nodered.org/t/node-red-loses-flows/15437)

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**Author:** [@Joe\_Q](https://discourse.nodered.org/u/Joe_Q)\
**Replies:** 7\
**Last updated:** [15 September 2019 11:54 UTC](https://discourse.nodered.org/t/node-red-loses-flows/15437 "2019-09-15T11:54:52Z")

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Folks, I have Node-RED running on a Raspberry Pi 3 at home. I have some flows in which data coming in via MQTT (the broker is on the same Raspberry Pi) is sent on to Thingspeak and to an InfluxDB database. A strange ph…

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## [Multiple nodes in a flow](https://discourse.nodered.org/t/multiple-nodes-in-a-flow/15552)

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**Author:** [@LazzaWA](https://discourse.nodered.org/u/LazzaWA)\
**Replies:** 2\
**Last updated:** [15 September 2019 09:44 UTC](https://discourse.nodered.org/t/multiple-nodes-in-a-flow/15552 "2019-09-15T09:44:03Z")

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Newbie question: is it a bad thing to have multiple instances of the same node in the same flow ? IE: multiple inject nodes multiple MQTT publish and subscribe nodes multiple debug nodes etc Or is it reall…

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## [Worldmap - 404:Not found](https://discourse.nodered.org/t/worldmap-404-not-found/15536)

<div class="topic-metadata">

**Author:** [@phreaq](https://discourse.nodered.org/u/phreaq)\
**Replies:** 11\
**Last updated:** [14 September 2019 22:24 UTC](https://discourse.nodered.org/t/worldmap-404-not-found/15536 "2019-09-14T22:24:08Z")

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Hi folks, I'm trying to start using the worldmap node, and I'm having issues getting it initially configured. I'm using the below code, but when I do the ctrl-shift-m I get a 404:Not Found error in my browser, which is…

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## [Converting string payload into JSON](https://discourse.nodered.org/t/converting-string-payload-into-json/14797)

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**Author:** [@tcmoreno](https://discourse.nodered.org/u/tcmoreno)\
**Replies:** 8\
**Last updated:** [14 September 2019 13:26 UTC](https://discourse.nodered.org/t/converting-string-payload-into-json/14797 "2019-09-14T13:26:40Z")

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Hi and hope this question is not too basic for you guys. I am stuck converting a string of values already pre-formatted into JSON \["DO:do000:OFF","DO:do001:OFF","DO:do002:OFF","DO:do003:OFF","DO:do004:OFF","DO:do005…

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## [Eztimer programming errors, timer won't start](https://discourse.nodered.org/t/eztimer-programming-errors-timer-wont-start/15485)

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**Author:** [@gerry](https://discourse.nodered.org/u/gerry)\
**Replies:** 31\
**Last updated:** [14 September 2019 12:40 UTC](https://discourse.nodered.org/t/eztimer-programming-errors-timer-wont-start/15485 "2019-09-14T12:40:55Z")

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\[{"id":"41815382.1586fc","type":"tab","label":"Testing","disabled":false,"info":""},{"id":"ae4ad29e.3e6848","type":"template","z":"41815382.1586fc","name":"Format","field":"payload","fieldType":"msg","format":"handlebars…

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## [Function node error checking](https://discourse.nodered.org/t/function-node-error-checking/15170)

<div class="topic-metadata">

**Author:** [@m\_elias](https://discourse.nodered.org/u/m_elias)\
**Replies:** 7\
**Last updated:** [14 September 2019 11:09 UTC](https://discourse.nodered.org/t/function-node-error-checking/15170 "2019-09-14T11:09:49Z")

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I'm just learning this stuff as I go. I am parsing data returned by a HTTP GET input node and pub'ing each item's value to my mqtt server (thanks to bakman2) //obj = \[{"macAddress":"XX:XX:XX:XX:XX:XX","lastData":{"date…

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## [Iterating CSV msg.payload array](https://discourse.nodered.org/t/iterating-csv-msg-payload-array/15478)

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**Author:** [@rchandrashekar](https://discourse.nodered.org/u/rchandrashekar)\
**Replies:** 5\
**Last updated:** [14 September 2019 08:23 UTC](https://discourse.nodered.org/t/iterating-csv-msg-payload-array/15478 "2019-09-14T08:23:34Z")

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How can iterate the msg.payload Object array. I have a message array as below from the CSV file, how can i have a function to iterate. Regds Rahul. \[{"Sensor\_Value":"0-200","Computed\_Value":10},{"Sensor\_Value":"200-3…

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## [\[Solved\] Raspberry PI 3B with Node Red causes high CPU load when Chromium start locally](https://discourse.nodered.org/t/solved-raspberry-pi-3b-with-node-red-causes-high-cpu-load-when-chromium-start-locally/15469)

<div class="topic-metadata">

**Author:** [@steirx](https://discourse.nodered.org/u/steirx)\
**Replies:** 14\
**Last updated:** [13 September 2019 21:02 UTC](https://discourse.nodered.org/t/solved-raspberry-pi-3b-with-node-red-causes-high-cpu-load-when-chromium-start-locally/15469 "2019-09-13T21:02:35Z")

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hi there, I am gaining my first experiences with Node Red with a deployment on a Raspberry Pi 3B. My test flows work fine when accessing the dashboard / gui from other stations (e.g. Laptop with Chrome browser). For (e…

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## [NodeRED and python](https://discourse.nodered.org/t/nodered-and-python/15517)

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**Author:** [@ALOKA1432](https://discourse.nodered.org/u/ALOKA1432)\
**Replies:** 12\
**Last updated:** [13 September 2019 18:32 UTC](https://discourse.nodered.org/t/nodered-and-python/15517 "2019-09-13T18:32:49Z")

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How can we get the output from a python file which is run not using exec node from the editor into NodeRED ?

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## [Installing on Ubuntu with script](https://discourse.nodered.org/t/installing-on-ubuntu-with-script/15515)

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**Author:** [@ceejm1](https://discourse.nodered.org/u/ceejm1)\
**Replies:** 19\
**Last updated:** [13 September 2019 16:22 UTC](https://discourse.nodered.org/t/installing-on-ubuntu-with-script/15515 "2019-09-13T16:22:10Z")

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Hello, I am attempting to install node-red on an ubuntu machine using the provided script, https://nodered.org/docs/getting-started/raspberrypi However it is exiting at 'Install Node.js LTS' with the error 'Failed to i…

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## [Forever - how to running Node Red continuously](https://discourse.nodered.org/t/forever-how-to-running-node-red-continuously/15511)

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**Author:** [@sweetwater](https://discourse.nodered.org/u/sweetwater)\
**Replies:** 2\
**Last updated:** [13 September 2019 15:09 UTC](https://discourse.nodered.org/t/forever-how-to-running-node-red-continuously/15511 "2019-09-13T15:09:46Z")

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Hope to get some guidance. We Have Node Red on AWS EC2 -Flows and Dashboard all working flawlessly. I am not too experienced in sys adm ( coming from different background) so need so guidance. Problem that we need hel…

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## [Debug filter options](https://discourse.nodered.org/t/debug-filter-options/15510)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [13 September 2019 13:51 UTC](https://discourse.nodered.org/t/debug-filter-options/15510 "2019-09-13T13:51:00Z")

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Ok there are three options with the debug listings on the right of the screen. ALL Selected nodes Current flow. But when I pick Selected nodes . . . . and only have one debug node, why is it when I take the time loo…

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## [TCP receive data led indicator - flip/flop?](https://discourse.nodered.org/t/tcp-receive-data-led-indicator-flip-flop/15506)

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**Author:** [@thebaldgeek](https://discourse.nodered.org/u/thebaldgeek)\
**Replies:** 2\
**Last updated:** [13 September 2019 13:38 UTC](https://discourse.nodered.org/t/tcp-receive-data-led-indicator-flip-flop/15506 "2019-09-13T13:38:24Z")

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I have two TCP nodes that are getting data from other Node-RED instances, that works fine. What I am looking for is an LED (or some indicator) of where the data is coming from. Here is a screen shot to help..... I w…

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## [Send TTS to all Echo dots](https://discourse.nodered.org/t/send-tts-to-all-echo-dots/15401)

<div class="topic-metadata">

**Author:** [@burn](https://discourse.nodered.org/u/burn)\
**Replies:** 4\
**Last updated:** [13 September 2019 09:52 UTC](https://discourse.nodered.org/t/send-tts-to-all-echo-dots/15401 "2019-09-13T09:52:38Z")

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Hello everyone, I am currently working on setting up alerts when the front door is open. I would like to sent a text to speech command to all of my Echo dots. The only way I been able to get any notifications is by…

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## [Dahua Palette Topic extraction](https://discourse.nodered.org/t/dahua-palette-topic-extraction/15473)

<div class="topic-metadata">

**Author:** [@mike829](https://discourse.nodered.org/u/mike829)\
**Replies:** 7\
**Last updated:** [13 September 2019 08:59 UTC](https://discourse.nodered.org/t/dahua-palette-topic-extraction/15473 "2019-09-13T08:59:44Z")

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Hello Everybody, I am testing the Dahua Palette for node-red. I receive the following debug message: 12/9/2019, 18:46:42node: 27808558.5ae2ea VideoMotion/1/Stop : msg.payload : string\[4\] "Stop" 12/9/2019, 18:46:51n…

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## [String to array - json.parse](https://discourse.nodered.org/t/string-to-array-json-parse/15496)

<div class="topic-metadata">

**Author:** [@bakman2](https://discourse.nodered.org/u/bakman2)\
**Replies:** 4\
**Last updated:** [13 September 2019 08:16 UTC](https://discourse.nodered.org/t/string-to-array-json-parse/15496 "2019-09-13T08:16:59Z")

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More related to javascript, but am not able to find a working example (that works in NR). I extract text from a website, the text is a string, but contains an (multidimensional) array. Function used to extract the text…

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## ["Configuration missing" influxdb (influxdb out) error](https://discourse.nodered.org/t/configuration-missing-influxdb-influxdb-out-error/15444)

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**Author:** [@RudyFiero](https://discourse.nodered.org/u/RudyFiero)\
**Replies:** 5\
**Last updated:** [13 September 2019 07:10 UTC](https://discourse.nodered.org/t/configuration-missing-influxdb-influxdb-out-error/15444 "2019-09-13T07:10:30Z")

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I am trying to use a flow that works on my Raspberry Pi at my work, but not on my R-Pi at home. I expect that I have something installed wrong, or specified wrong. When I try to deploy I get the following error message. …

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## [KNX write error by the node-red-contrib-knx node](https://discourse.nodered.org/t/knx-write-error-by-the-node-red-contrib-knx-node/7798)

<div class="topic-metadata">

**Author:** [@Rulevalley](https://discourse.nodered.org/u/Rulevalley)\
**Replies:** 4\
**Last updated:** [14 February 2019 13:06 UTC](https://discourse.nodered.org/t/knx-write-error-by-the-node-red-contrib-knx-node/7798 "2019-02-14T13:06:19Z")

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Hi. I have a RPI3B and a KNX USB adaptor. Have installed a KNXD from micheals tech blog Issue is that first message i Try to write to the bus, gives an error and connection timeout. Read failed: Connection reset by…

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## [Allow client access over both HTTP and HTTPS?](https://discourse.nodered.org/t/allow-client-access-over-both-http-and-https/15434)

<div class="topic-metadata">

**Author:** [@pandos](https://discourse.nodered.org/u/pandos)\
**Replies:** 15\
**Last updated:** [13 September 2019 05:45 UTC](https://discourse.nodered.org/t/allow-client-access-over-both-http-and-https/15434 "2019-09-13T05:45:36Z")

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My Node-Red server needs to support both HTTP and HTTPS request at the same time. My HTTPS configuration with LE-signed certificates works great but then I get no response on HTTP. If I disable HTTPS I can access it ov…

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## [Node-red communicating with Arduino using MQTT and NO Wifi?](https://discourse.nodered.org/t/node-red-communicating-with-arduino-using-mqtt-and-no-wifi/15471)

<div class="topic-metadata">

**Author:** [@Exit2Studios](https://discourse.nodered.org/u/Exit2Studios)\
**Replies:** 2\
**Last updated:** [12 September 2019 19:59 UTC](https://discourse.nodered.org/t/node-red-communicating-with-arduino-using-mqtt-and-no-wifi/15471 "2019-09-12T19:59:44Z")

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Can someone help direct me to an example of how I can communicate with my Arduino Nano, which is directly connected to RPi running Mosquitto Broker and NR without wifi? I'm looking to elminate the reliance on wifi and p…

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