# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1160

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

**Page:** 1161

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## [Control Game Servos](https://discourse.nodered.org/t/control-game-servos/21377)

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**Author:** [@cesarius](https://discourse.nodered.org/u/cesarius)\
**Replies:** 10\
**Last updated:** [10 February 2020 14:57 UTC](https://discourse.nodered.org/t/control-game-servos/21377 "2020-02-10T14:57:54Z")

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Hi, I recognize that I am a rookie in this node-red and therefore I want to ask for your advice. I need to add a videogame control, Genius brand, to control 2 servos that I have connected to my raspberry 3. I would ap…

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## [Oracledb-node not visible after installation](https://discourse.nodered.org/t/oracledb-node-not-visible-after-installation/21498)

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**Author:** [@mhechthz](https://discourse.nodered.org/u/mhechthz)\
**Replies:** 2\
**Last updated:** [10 February 2020 13:36 UTC](https://discourse.nodered.org/t/oracledb-node-not-visible-after-installation/21498 "2020-02-10T13:36:34Z")

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Hi, I installed oracledb-node according to https://oracle.github.io/node-oracledb/INSTALL.html#mig . All works well without any error or warning. After starting node-red, the oracle node is not visible in the user inte…

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## [Read and close data from text/ode file](https://discourse.nodered.org/t/read-and-close-data-from-text-ode-file/21492)

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**Author:** [@pranavthakkar](https://discourse.nodered.org/u/pranavthakkar)\
**Replies:** 6\
**Last updated:** [10 February 2020 12:31 UTC](https://discourse.nodered.org/t/read-and-close-data-from-text-ode-file/21492 "2020-02-10T12:31:15Z")

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Hello there! I have barcode scanner which is scanning the barcode and currently i'm sending it's value to a text file in RPI also I have used spreadsheet.odb(excel) file. My problem is when i scan a barcode it is writt…

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## [Mass-disable nodes by criteria](https://discourse.nodered.org/t/mass-disable-nodes-by-criteria/21463)

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**Author:** [@alexk111](https://discourse.nodered.org/u/alexk111)\
**Replies:** 6\
**Last updated:** [10 February 2020 12:23 UTC](https://discourse.nodered.org/t/mass-disable-nodes-by-criteria/21463 "2020-02-10T12:23:26Z")

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Is there a way to mass-disable all nodes by criteria (a node type or name regexp for example) via ui and/or programmatically? I have flows consisting of webhooks (http callbacks) and series of api calls taking some time …

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## [Debug in gauge node red](https://discourse.nodered.org/t/debug-in-gauge-node-red/21242)

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**Author:** [@cherryberry](https://discourse.nodered.org/u/cherryberry)\
**Replies:** 6\
**Last updated:** [10 February 2020 10:08 UTC](https://discourse.nodered.org/t/debug-in-gauge-node-red/21242 "2020-02-10T10:08:19Z")

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Hai, I have a problem with my dashboard. the gauge cannot show the data. I have used change to change the string data to number, but it's still not working. this is the flow

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## [Node-red-contrib-oracledb cannot be installed](https://discourse.nodered.org/t/node-red-contrib-oracledb-cannot-be-installed/21477)

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**Author:** [@mhechthz](https://discourse.nodered.org/u/mhechthz)\
**Replies:** 4\
**Last updated:** [10 February 2020 09:36 UTC](https://discourse.nodered.org/t/node-red-contrib-oracledb-cannot-be-installed/21477 "2020-02-10T09:36:02Z")

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Hi, I try to install oracledb via: npm install node-red-contrib-oracledb But get the appended error file. I din't find any helpful solution in the web. What can I do. (Win 7 System) Sorry, I'm not allowed to upload …

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## [Unable to connect to server 127.0.0.1:1880 through port 1880](https://discourse.nodered.org/t/unable-to-connect-to-server-127-0-0-1-1880-through-port-1880/21444)

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**Author:** [@HelenH](https://discourse.nodered.org/u/HelenH)\
**Replies:** 6\
**Last updated:** [10 February 2020 09:04 UTC](https://discourse.nodered.org/t/unable-to-connect-to-server-127-0-0-1-1880-through-port-1880/21444 "2020-02-10T09:04:07Z")

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Hello lately, I was trying to deploy Temperature and Humidity measurement on Node-Red Using an ESP32 DevKit module. Through Arduino IDE I Checked that module successfully reads values and connects to my WiFi. In Node-…

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## [Running Brain.js Asynchronously Question](https://discourse.nodered.org/t/running-brain-js-asynchronously-question/16479)

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**Author:** [@tcontrada](https://discourse.nodered.org/u/tcontrada)\
**Replies:** 4\
**Last updated:** [10 February 2020 07:36 UTC](https://discourse.nodered.org/t/running-brain-js-asynchronously-question/16479 "2020-02-10T07:36:22Z")

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I am using Brain.js for some test functions and trying to figure out if I can run it asynchronously from a Function Node. It works fine running synchronously, but the async return function does not seem to fire and outpu…

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## [Load Chart.js in UI template locally](https://discourse.nodered.org/t/load-chart-js-in-ui-template-locally/21452)

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**Author:** [@Henjoe](https://discourse.nodered.org/u/Henjoe)\
**Replies:** 2\
**Last updated:** [10 February 2020 02:38 UTC](https://discourse.nodered.org/t/load-chart-js-in-ui-template-locally/21452 "2020-02-10T02:38:48Z")

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Hello, how can I load the Chart.js in my UI template? I don't want to use the built-in dashboard chart due to its limitation of control so I would like to create it using the UI template. But I don't know if UI template …

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## [Newbie needs help: Reading msg: String status from Azure Save Blob](https://discourse.nodered.org/t/newbie-needs-help-reading-msg-string-status-from-azure-save-blob/21432)

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**Author:** [@xterix](https://discourse.nodered.org/u/xterix)\
**Replies:** 11\
**Last updated:** [9 February 2020 23:42 UTC](https://discourse.nodered.org/t/newbie-needs-help-reading-msg-string-status-from-azure-save-blob/21432 "2020-02-09T23:42:24Z")

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Hello All. I do need a bit of help getting the status from Azure Blob Storage node. I do want to rename the file if it's uploaded properly. But I'm not getting able to get the msg.string to process it. Tom. Please, …

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## [Start a flow when certain conditions are true](https://discourse.nodered.org/t/start-a-flow-when-certain-conditions-are-true/21451)

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**Author:** [@djMvT](https://discourse.nodered.org/u/djMvT)\
**Replies:** 3\
**Last updated:** [9 February 2020 21:56 UTC](https://discourse.nodered.org/t/start-a-flow-when-certain-conditions-are-true/21451 "2020-02-09T21:56:29Z")

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Trying to do the following: In the picture you see my doorbell and mailbox flows, they are working so when someone is at the door or the mailbox gets filled the google assistant give a tts announcement. (the second cast…

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## [MQTT node output ghost topics](https://discourse.nodered.org/t/mqtt-node-output-ghost-topics/21448)

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**Author:** [@gerry](https://discourse.nodered.org/u/gerry)\
**Replies:** 13\
**Last updated:** [9 February 2020 21:53 UTC](https://discourse.nodered.org/t/mqtt-node-output-ghost-topics/21448 "2020-02-09T21:53:14Z")

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I have 11 flows in my node red with a number of MQTT outputs. Looking at the outputs in MQTT explorer I have four topics, labeled Random1, Random2, Random3, Random4 that always output a 0. My problem is that I don't have…

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## [HTTP end point without auth](https://discourse.nodered.org/t/http-end-point-without-auth/21465)

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**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 1\
**Last updated:** [9 February 2020 20:30 UTC](https://discourse.nodered.org/t/http-end-point-without-auth/21465 "2020-02-09T20:30:41Z")

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I am trying to obtain access to an audio mp3 file from an endpoint, so that I can cast it to a Google Home device. In my node-red settings, I have enabled adminAuth, https and httpNodeAuth, but no surprise that when I…

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## [Switch from python script to node red](https://discourse.nodered.org/t/switch-from-python-script-to-node-red/21454)

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**Author:** [@Joezi](https://discourse.nodered.org/u/Joezi)\
**Replies:** 6\
**Last updated:** [9 February 2020 19:03 UTC](https://discourse.nodered.org/t/switch-from-python-script-to-node-red/21454 "2020-02-09T19:03:34Z")

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Hello, I would like to use node red instead of a python script which is started at system start. Unfortunately, I am not getting the functionality to run. Here is my python script: #Einstellungen klingel\_gpio = 4 #GPI…

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## [Javascript search for a special character](https://discourse.nodered.org/t/javascript-search-for-a-special-character/21428)

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**Author:** [@pvklink](https://discourse.nodered.org/u/pvklink)\
**Replies:** 4\
**Last updated:** [9 February 2020 14:13 UTC](https://discourse.nodered.org/t/javascript-search-for-a-special-character/21428 "2020-02-09T14:13:03Z")

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I am struggling for hours with my flow. Last part is to search for a \[ sign in a variable and if not add it I made a simple test, but still get errors "SyntaxError: Invalid regular expression: /\[/: Unterminated charac…

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## [Inject node - repeat. Stuck if it can be set externally](https://discourse.nodered.org/t/inject-node-repeat-stuck-if-it-can-be-set-externally/3601)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 7\
**Last updated:** [9 February 2020 12:12 UTC](https://discourse.nodered.org/t/inject-node-repeat-stuck-if-it-can-be-set-externally/3601 "2020-02-09T12:12:41Z")

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Probably dumb, but here goes: Is there a way to edit/change/set the repeat interval with flow or global variables? What I am wanting to do: As is, I have an inject node running injects every 10 seconds. To change tha…

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## [Installing latest node-red (1.0.3) on Pi zero (ARMv6)](https://discourse.nodered.org/t/installing-latest-node-red-1-0-3-on-pi-zero-armv6/21437)

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**Author:** [@geoff](https://discourse.nodered.org/u/geoff)\
**Replies:** 2\
**Last updated:** [9 February 2020 11:49 UTC](https://discourse.nodered.org/t/installing-latest-node-red-1-0-3-on-pi-zero-armv6/21437 "2020-02-09T11:49:07Z")

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What is the best way to install the latest node-red (1.0.3) on a Pi zero (ARMv6) given that nodejs no longer supports ARMv6? How do you compiling nodejs on the Pi zero and is this a sensible way to go? How are people g…

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## [Solar Boiler with heating element PID](https://discourse.nodered.org/t/solar-boiler-with-heating-element-pid/21243)

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**Author:** [@serimi](https://discourse.nodered.org/u/serimi)\
**Replies:** 12\
**Last updated:** [9 February 2020 11:29 UTC](https://discourse.nodered.org/t/solar-boiler-with-heating-element-pid/21243 "2020-02-09T11:29:07Z")

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Hi guys, first of all I appreciate this forum so much - I have solved most of my problems in my node red development by reading through the forum! However, now I stumbled into the following problem that I need your advi…

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## [The dashboard 'audio out' node doesn't speak text](https://discourse.nodered.org/t/the-dashboard-audio-out-node-doesnt-speak-text/21423)

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**Author:** [@kalamar194](https://discourse.nodered.org/u/kalamar194)\
**Replies:** 6\
**Last updated:** [8 February 2020 19:36 UTC](https://discourse.nodered.org/t/the-dashboard-audio-out-node-doesnt-speak-text/21423 "2020-02-08T19:36:11Z")

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Good morning everyone, I come to you to answer a question, I am using the audio input node of the dashboard group, my problem is that it does not speech text and the voices do not appear to work. I'm using Chromium in r…

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## [\[Announce\] Dashboard Version 2.16.0, 1, 2, 3, 4](https://discourse.nodered.org/t/announce-dashboard-version-2-16-0-1-2-3-4/14391)

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**Author:** [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Replies:** 29\
**Last updated:** [16 September 2019 16:21 UTC](https://discourse.nodered.org/t/announce-dashboard-version-2-16-0-1-2-3-4/14391 "2019-09-16T16:21:10Z")

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So here is Node-RED-Dashboard 2.16.0: Milestone Release Enhancements Add Dashboard Layout tool - Major contribution - Thanks @KazuhiroItoh - PR #482 Add ui.isDark() returns true/false if overall theme is dark or ligh…

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## [Function nodes : Invalid Properties - noerr](https://discourse.nodered.org/t/function-nodes-invalid-properties-noerr/21383)

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**Author:** [@RobC](https://discourse.nodered.org/u/RobC)\
**Replies:** 10\
**Last updated:** [8 February 2020 12:22 UTC](https://discourse.nodered.org/t/function-nodes-invalid-properties-noerr/21383 "2020-02-08T12:22:04Z")

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Hi Folks, Sorry if already asked (but every post has a 'noerr' and there's nothing in title that matches. I did a deployment on to a production server from our Dev. The Dev server is fine but on production every single …

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## [Pushing a local var updates the global one](https://discourse.nodered.org/t/pushing-a-local-var-updates-the-global-one/21414)

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**Author:** [@Lupin\_III](https://discourse.nodered.org/u/Lupin_III)\
**Replies:** 2\
**Last updated:** [8 February 2020 10:44 UTC](https://discourse.nodered.org/t/pushing-a-local-var-updates-the-global-one/21414 "2020-02-08T10:44:39Z")

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Hi, Im spending lots of hours without success nor understanding why it happens. I have a global variable (an array) stored in filesystem. In a function node I put a local variable equal to the global one. Then, working …

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## [Parallel nodes efficiency](https://discourse.nodered.org/t/parallel-nodes-efficiency/21400)

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**Author:** [@kuzmich](https://discourse.nodered.org/u/kuzmich)\
**Replies:** 4\
**Last updated:** [8 February 2020 09:31 UTC](https://discourse.nodered.org/t/parallel-nodes-efficiency/21400 "2020-02-08T09:31:42Z")

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Hello guys, how does Node-red calculate parallel nodes? If you have 100 parallel function nodes with a single if clause vs one node with 100 consecutive if's, which one would be faster?

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## [Chercher dans un tableau](https://discourse.nodered.org/t/chercher-dans-un-tableau/21342)

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**Author:** [@micke007](https://discourse.nodered.org/u/micke007)\
**Replies:** 5\
**Last updated:** [8 February 2020 08:15 UTC](https://discourse.nodered.org/t/chercher-dans-un-tableau/21342 "2020-02-08T08:15:29Z")

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bonjour a tous je cherche a trouver le prix le moins cher et afficher les informations qui vont avec \[{"id":"c2d7159b.44db98","type":"http request","z":"3dafcb6f.c00894","name":"1","method":"GET","ret":"txt","paytoqs":…

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## [📋 Survey: logging to debug sidebar](https://discourse.nodered.org/t/survey-logging-to-debug-sidebar/21253)

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**Author:** [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Replies:** 22\
**Last updated:** [8 February 2020 06:47 UTC](https://discourse.nodered.org/t/survey-logging-to-debug-sidebar/21253 "2020-02-08T06:47:19Z")

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Hi, one of the long-standing quirks of the Function node is that the only way to get a message to appear in the Debug sidebar is to use node.warn or node.error. The problem with this approach is it puts what should be …

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## [Can you set a Static IP via the dashboard?](https://discourse.nodered.org/t/can-you-set-a-static-ip-via-the-dashboard/21374)

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**Author:** [@dr\_cave\_dweller](https://discourse.nodered.org/u/dr_cave_dweller)\
**Replies:** 7\
**Last updated:** [8 February 2020 01:40 UTC](https://discourse.nodered.org/t/can-you-set-a-static-ip-via-the-dashboard/21374 "2020-02-08T01:40:23Z")

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I am trying to change the system static IP via the dashboard. For example.... Press button 1, Static IP will be 192.168.1.01/24 Press button 2, Static IP will be 192.168.1.02/24 Press button 3, Static IP will be 192.1…

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## [RPI Keyboard key code](https://discourse.nodered.org/t/rpi-keyboard-key-code/20063)

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**Author:** [@sweetwater](https://discourse.nodered.org/u/sweetwater)\
**Replies:** 3\
**Last updated:** [7 February 2020 16:23 UTC](https://discourse.nodered.org/t/rpi-keyboard-key-code/20063 "2020-02-07T16:23:37Z")

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Using the standard RPI Keyboard node to detect Keyboard entries. Using a standard USB keyboard ( usa layout). When pressing: a : code = 30 b: code= 48 1: code 2 f1: code = 59 Does anyone know the code lookup table? …

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## [Invalid session for assistant V2 node using telegram](https://discourse.nodered.org/t/invalid-session-for-assistant-v2-node-using-telegram/21409)

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**Author:** [@gianlubiscotto](https://discourse.nodered.org/u/gianlubiscotto)\
**Replies:** 0\
**Last updated:** [7 February 2020 19:39 UTC](https://discourse.nodered.org/t/invalid-session-for-assistant-v2-node-using-telegram/21409 "2020-02-07T19:39:13Z")

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I attached a telegram receiver and sender to watson assistant. I don't need multiple sessions so I left unchecked the "multiple sessions" checkbox. When I send a message from my telegram bot, node-red console tells me "…

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## [Help with line Chart plotting 2 separate lines instead of one](https://discourse.nodered.org/t/help-with-line-chart-plotting-2-separate-lines-instead-of-one/20926)

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**Author:** [@Argus](https://discourse.nodered.org/u/Argus)\
**Replies:** 2\
**Last updated:** [7 February 2020 19:21 UTC](https://discourse.nodered.org/t/help-with-line-chart-plotting-2-separate-lines-instead-of-one/20926 "2020-02-07T19:21:36Z")

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Hi Still learning, I trying to create a remote test application where I can toggle the I/O's on an external device using a Rpi which so far is going well. The simple switch and on/off buttons is working fine and was a g…

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## [Get location.href and pass it to other nodes](https://discourse.nodered.org/t/get-location-href-and-pass-it-to-other-nodes/21406)

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**Author:** [@lenny1972](https://discourse.nodered.org/u/lenny1972)\
**Replies:** 1\
**Last updated:** [7 February 2020 18:51 UTC](https://discourse.nodered.org/t/get-location-href-and-pass-it-to-other-nodes/21406 "2020-02-07T18:51:12Z")

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For my project I need to get the location.href displayed in the browser used for accessing the UI dashboard (i.e. localhost:1880/ui) and then use this information in other flows, or better set this info in a flow/global …

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