# Latest

**URL:** https://discourse.nodered.org/latest.md?page=671

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

**Page:** 672

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## [Auto start node-red in ubuntu](https://discourse.nodered.org/t/auto-start-node-red-in-ubuntu/17627)

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**Author:** [@Iliyas](https://discourse.nodered.org/u/Iliyas)\
**Replies:** 14\
**Last updated:** [17 December 2021 23:57 UTC](https://discourse.nodered.org/t/auto-start-node-red-in-ubuntu/17627 "2021-12-17T23:57:31Z")

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Hello, I have installed node-red and even installed pm2, how can we setup node-red to start automatically when the system gets rebooted?

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## [Node-Red direct wifi link to DHT22/ESP8266](https://discourse.nodered.org/t/node-red-direct-wifi-link-to-dht22-esp8266/54783)

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**Author:** [@fredshortlv129bis](https://discourse.nodered.org/u/fredshortlv129bis)\
**Replies:** 9\
**Last updated:** [17 December 2021 22:45 UTC](https://discourse.nodered.org/t/node-red-direct-wifi-link-to-dht22-esp8266/54783 "2021-12-17T22:45:54Z")

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I currently measure the outside and inside temperature according to the diagram below. It is programmed by a friend to teach me IDE programming. I suppose that Node-Red might be easier to program. I am at least a fan. …

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## [How to tweak the sensitivity/delay of gauges](https://discourse.nodered.org/t/how-to-tweak-the-sensitivity-delay-of-gauges/55346)

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**Author:** [@attoampere](https://discourse.nodered.org/u/attoampere)\
**Replies:** 13\
**Last updated:** [17 December 2021 22:28 UTC](https://discourse.nodered.org/t/how-to-tweak-the-sensitivity-delay-of-gauges/55346 "2021-12-17T22:28:01Z")

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Hi there, being a total newbie to node-red I wanted to test-drive hotNipis awesome gauges. Thereby I discovered that even the standard dashboard gauges are super unresponsive to large input changes via the slider. How…

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## [Can't get this API node to work. help!](https://discourse.nodered.org/t/cant-get-this-api-node-to-work-help/55365)

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**Author:** [@cinghialino](https://discourse.nodered.org/u/cinghialino)\
**Replies:** 3\
**Last updated:** [17 December 2021 22:07 UTC](https://discourse.nodered.org/t/cant-get-this-api-node-to-work-help/55365 "2021-12-17T22:07:39Z")

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Hello, I tried to connect to an api to return me the USD value of some crypto. I would like to use the API provided by https://www.livecoinwatch.com, and I've followed their instruction as per Live Coin Watch API Docum…

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## [Javascript does not work ;-)](https://discourse.nodered.org/t/javascript-does-not-work/55349)

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**Author:** [@nosered1966](https://discourse.nodered.org/u/nosered1966)\
**Replies:** 7\
**Last updated:** [17 December 2021 21:50 UTC](https://discourse.nodered.org/t/javascript-does-not-work/55349 "2021-12-17T21:50:15Z")

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Hi all, I am totally new in Node Red and Javascript and I am no SW developer and probably this is already the answer to my question. I have only a little experience in writing vb.net and vba software doing this as a hob…

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## [How to test function using numeric node?](https://discourse.nodered.org/t/how-to-test-function-using-numeric-node/55363)

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**Author:** [@nosered1966](https://discourse.nodered.org/u/nosered1966)\
**Replies:** 7\
**Last updated:** [17 December 2021 21:40 UTC](https://discourse.nodered.org/t/how-to-test-function-using-numeric-node/55363 "2021-12-17T21:40:05Z")

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Hi all, I have written a function in a function node which I want to test using a numeric node by changing the input values. I have to emulate the message you can see in the screenshot below. Only value msg.payload.powe…

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## [Function: how to create a message with an array (beginner)](https://discourse.nodered.org/t/function-how-to-create-a-message-with-an-array-beginner/55356)

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**Author:** [@Speedriff](https://discourse.nodered.org/u/Speedriff)\
**Replies:** 2\
**Last updated:** [17 December 2021 20:01 UTC](https://discourse.nodered.org/t/function-how-to-create-a-message-with-an-array-beginner/55356 "2021-12-17T20:01:31Z")

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Hi programmers, I'm trying to programm a function, which should transform the message of a dashboard-colopicker to a message, which is readable from a HUEmagic node. The colorpicker sends this message: The HUEmagic …

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## [How to install an older node version](https://discourse.nodered.org/t/how-to-install-an-older-node-version/55360)

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**Author:** [@Flixm](https://discourse.nodered.org/u/Flixm)\
**Replies:** 1\
**Last updated:** [17 December 2021 19:59 UTC](https://discourse.nodered.org/t/how-to-install-an-older-node-version/55360 "2021-12-17T19:59:54Z")

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Hi, i (and a lot of other ones) have a problem with a newer version of a node. In my case it´s: node-red-contrib-smartnora (node) - Node-RED How can i install an older version ? Thx in advance

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## [Error while updating to newer version of NR](https://discourse.nodered.org/t/error-while-updating-to-newer-version-of-nr/55141)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 40\
**Last updated:** [17 December 2021 19:38 UTC](https://discourse.nodered.org/t/error-while-updating-to-newer-version-of-nr/55141 "2021-12-17T19:38:45Z")

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I finally decided to update a machine with this command: bash \<(curl -sL https://raw.githubusercontent.com/node-red/linux-installers/master/deb/update-nodejs-and-nodered) --node14 The --node14 was because it complained…

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## [Http request CERT\_HAS\_EXPIRED, but has it?](https://discourse.nodered.org/t/http-request-cert-has-expired-but-has-it/55345)

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**Author:** [@hobbes1069](https://discourse.nodered.org/u/hobbes1069)\
**Replies:** 3\
**Last updated:** [17 December 2021 18:24 UTC](https://discourse.nodered.org/t/http-request-cert-has-expired-but-has-it/55345 "2021-12-17T18:24:19Z")

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I use an htttp request node to check if a website is up to create a "heartbeat" so I can take action if it goes down. Currently the node has the status CERT\_HAS\_EXPIRED, but if I go to the web page in Google Chrome, it …

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## [Can't read motion data from sense hat in Node Red](https://discourse.nodered.org/t/cant-read-motion-data-from-sense-hat-in-node-red/55323)

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**Author:** [@midoyondaime](https://discourse.nodered.org/u/midoyondaime)\
**Replies:** 11\
**Last updated:** [17 December 2021 18:41 UTC](https://discourse.nodered.org/t/cant-read-motion-data-from-sense-hat-in-node-red/55323 "2021-12-17T18:41:45Z")

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Hello community , i am using Raspberry Pi 3 and Sense Hat to get Environment events and Motion events I can get temperature and pressure and humidty , but i can't get the mention data at all. i tried to reinstall all …

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## [Sending private key via API calls - /flow](https://discourse.nodered.org/t/sending-private-key-via-api-calls-flow/55293)

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**Author:** [@Shiny](https://discourse.nodered.org/u/Shiny)\
**Replies:** 6\
**Last updated:** [17 December 2021 17:44 UTC](https://discourse.nodered.org/t/sending-private-key-via-api-calls-flow/55293 "2021-12-17T17:44:07Z")

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I have private key saved in node red. But not able to select the same using API /flow. Please let me know how can we input the private key via API calls. Thanks, Shiny

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## [How to set Node RED editor at runtime?](https://discourse.nodered.org/t/how-to-set-node-red-editor-at-runtime/55287)

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**Author:** [@studiobox](https://discourse.nodered.org/u/studiobox)\
**Replies:** 6\
**Last updated:** [17 December 2021 15:50 UTC](https://discourse.nodered.org/t/how-to-set-node-red-editor-at-runtime/55287 "2021-12-17T15:50:05Z")

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Hi all, How to set Node RED editor at runtime? At first I created custom Node. Then I use Node Red editor for "MyText" input value. Then I use validate "MyText" by using function. If validation is invalid, I want to s…

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## [How to change the log level of the Exec/Debug nodes](https://discourse.nodered.org/t/how-to-change-the-log-level-of-the-exec-debug-nodes/55183)

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**Author:** [@Darwin](https://discourse.nodered.org/u/Darwin)\
**Replies:** 16\
**Last updated:** [17 December 2021 15:08 UTC](https://discourse.nodered.org/t/how-to-change-the-log-level-of-the-exec-debug-nodes/55183 "2021-12-17T15:08:10Z")

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Hi there, In my project I display system data like CPU Load, Free disk space etc. . To do that I use the output of an exec node which queries the system data each 10s. The problem is now that the exec node is spamming…

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## [iMAC serial port comunication](https://discourse.nodered.org/t/imac-serial-port-comunication/55341)

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**Author:** [@stefano.m](https://discourse.nodered.org/u/stefano.m)\
**Replies:** 8\
**Last updated:** [17 December 2021 14:04 UTC](https://discourse.nodered.org/t/imac-serial-port-comunication/55341 "2021-12-17T14:04:29Z")

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Hi , I've installed node-red on my iMAC and in my MacBook. I normally work with Arduino with the IDE on /dev/cu.usbmodem144201 and /dev/cu/usbseriall-0001 for Esp8266. In node-red I can't find these serial ports , I've…

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## [Verbindung zum mqtt Broker nicht möglich](https://discourse.nodered.org/t/verbindung-zum-mqtt-broker-nicht-moglich/55331)

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**Author:** [@rowu](https://discourse.nodered.org/u/rowu)\
**Replies:** 2\
**Last updated:** [17 December 2021 12:31 UTC](https://discourse.nodered.org/t/verbindung-zum-mqtt-broker-nicht-moglich/55331 "2021-12-17T12:31:50Z")

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Guten Morgen, ich bekomme seit einigen Tagen diese Fehlermeldung beim Starten vom Node-red server... Habe zwischen der IP von meinem PI wie auch localhost ausgetestet, jedoch ohne abhilfe. In den Zahlreichen Internet Dok…

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## [Is it possible to use only the core functionality of nodered for my own web app?](https://discourse.nodered.org/t/is-it-possible-to-use-only-the-core-functionality-of-nodered-for-my-own-web-app/55321)

<div class="topic-metadata">

**Author:** [@MSoup](https://discourse.nodered.org/u/MSoup)\
**Replies:** 1\
**Last updated:** [17 December 2021 09:33 UTC](https://discourse.nodered.org/t/is-it-possible-to-use-only-the-core-functionality-of-nodered-for-my-own-web-app/55321 "2021-12-17T09:33:58Z")

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By core functionality, I mean the ability to simply initiate editor instances and plot nodes (I'm not so worried about the engine--yet), while keeping UI completely original? Or, is this a complete product where everyth…

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## [Message sequences](https://discourse.nodered.org/t/message-sequences/55301)

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**Author:** [@findoctorlin](https://discourse.nodered.org/u/findoctorlin)\
**Replies:** 2\
**Last updated:** [17 December 2021 08:08 UTC](https://discourse.nodered.org/t/message-sequences/55301 "2021-12-17T08:08:21Z")

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Hi! I followed the tutorial here Message Sequences - Node-RED Essentials - YouTube Trying to create this flow and add "price" as a new column, but the new price column did not show up in the debug console: Can some…

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## [After exporting all flows hundreds of syntax error when importing?](https://discourse.nodered.org/t/after-exporting-all-flows-hundreds-of-syntax-error-when-importing/55309)

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**Author:** [@EDsteve](https://discourse.nodered.org/u/EDsteve)\
**Replies:** 7\
**Last updated:** [17 December 2021 07:43 UTC](https://discourse.nodered.org/t/after-exporting-all-flows-hundreds-of-syntax-error-when-importing/55309 "2021-12-17T07:43:47Z")

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Hello, i am a bit desperate because i don't want to loose all my flows :roll\_eyes: This is what happened: Menu -\> Export -\> All Flows -\> Copy to clipboard -\> Paste to Github (as comment) Then i reinstalled my server …

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## [Ping returns not reliable data - why?](https://discourse.nodered.org/t/ping-returns-not-reliable-data-why/55316)

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**Author:** [@SuperBoss9](https://discourse.nodered.org/u/SuperBoss9)\
**Replies:** 2\
**Last updated:** [17 December 2021 07:42 UTC](https://discourse.nodered.org/t/ping-returns-not-reliable-data-why/55316 "2021-12-17T07:42:59Z")

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Hello All! A fresh install of NodeRED 2.1.4 at Ubuntu 18 LTS. It seems that it works but... If I use ping node (this one node-red-node-ping (node) - Node-RED) or config ping (this one node-red-configurable-ping (node) …

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## [Stop nodes with Logic AND](https://discourse.nodered.org/t/stop-nodes-with-logic-and/55200)

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**Author:** [@joe7](https://discourse.nodered.org/u/joe7)\
**Replies:** 9\
**Last updated:** [16 December 2021 22:13 UTC](https://discourse.nodered.org/t/stop-nodes-with-logic-and/55200 "2021-12-16T22:13:41Z")

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hello Here is my problem I have to make a dashboard which indicates the stopping time of three different stations (stop by switch) with cummul + reset and an indication of the total temp with cummul also but what I have …

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## [Receiving "RangeError: Maximum call stack size exceeded" from function node](https://discourse.nodered.org/t/receiving-rangeerror-maximum-call-stack-size-exceeded-from-function-node/55311)

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**Author:** [@DeathByAnalysis](https://discourse.nodered.org/u/DeathByAnalysis)\
**Replies:** 6\
**Last updated:** [16 December 2021 20:15 UTC](https://discourse.nodered.org/t/receiving-rangeerror-maximum-call-stack-size-exceeded-from-function-node/55311 "2021-12-16T20:15:51Z")

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Hello Node-Red community! I'm having a bit of trouble with a flow I'm making for a Discord Bot that takes a message, parses it, then outputs each number to its own text file. I have each half working independently. If I …

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## [Filter certain text from string](https://discourse.nodered.org/t/filter-certain-text-from-string/55306)

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**Author:** [@bigmac5753](https://discourse.nodered.org/u/bigmac5753)\
**Replies:** 3\
**Last updated:** [16 December 2021 18:28 UTC](https://discourse.nodered.org/t/filter-certain-text-from-string/55306 "2021-12-16T18:28:27Z")

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I have this payload that I want to filter: Wallet height: 760264 Sync status: Synced Balances, fingerprint: 3007886911 Wallet ID 1 type STANDARD\_WALLET -Total Balance: 2958.5843702 xcc (295858437020 mojo) -Pending…

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## [Seconds in text input](https://discourse.nodered.org/t/seconds-in-text-input/55310)

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**Author:** [@Felipe](https://discourse.nodered.org/u/Felipe)\
**Replies:** 0\
**Last updated:** [16 December 2021 18:15 UTC](https://discourse.nodered.org/t/seconds-in-text-input/55310 "2021-12-16T18:15:34Z")

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hi, I need to use "HH:mm:ss" in the "time picker" (text input)..... is it possible to do that?

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## [GPIO not available on Raspberry](https://discourse.nodered.org/t/gpio-not-available-on-raspberry/53531)

<div class="topic-metadata">

**Author:** [@tiby007](https://discourse.nodered.org/u/tiby007)\
**Replies:** 17\
**Last updated:** [16 December 2021 16:51 UTC](https://discourse.nodered.org/t/gpio-not-available-on-raspberry/53531 "2021-12-16T16:51:56Z")

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Hello Guys! I just started to use Raspberry OS Full with applications. First when I installed it, noticed, that it has built in Node-RED (so cool). I tried it without any modification and I manage to control GPIO pin 2 …

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## [Persistent Unwanted Pushbullet Messages](https://discourse.nodered.org/t/persistent-unwanted-pushbullet-messages/55300)

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**Author:** [@Grovesy](https://discourse.nodered.org/u/Grovesy)\
**Replies:** 2\
**Last updated:** [16 December 2021 16:45 UTC](https://discourse.nodered.org/t/persistent-unwanted-pushbullet-messages/55300 "2021-12-16T16:45:02Z")

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Hi all, I have a few Ruuvi Tags dotted around my house sending Temperature and Humidity back to Node-Red via Bluetooth. This was always a bit flaky but I managed to build in some resilience with Node-Red. One of the t…

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## [How to use the new Group environment variables feature](https://discourse.nodered.org/t/how-to-use-the-new-group-environment-variables-feature/55259)

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**Author:** [@mikefatom](https://discourse.nodered.org/u/mikefatom)\
**Replies:** 5\
**Last updated:** [16 December 2021 16:21 UTC](https://discourse.nodered.org/t/how-to-use-the-new-group-environment-variables-feature/55259 "2021-12-16T16:21:23Z")

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Hello, I'm new here so please excuse the noob question. :slight\_smile: How does one access environment variables defined at a Group level in a function node? I tried using let myVar = env.get("MY\_ENV\_VAR"); but all i…

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## [How to send pictures to a POST API?](https://discourse.nodered.org/t/how-to-send-pictures-to-a-post-api/55294)

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**Author:** [@Nameoh](https://discourse.nodered.org/u/Nameoh)\
**Replies:** 2\
**Last updated:** [16 December 2021 16:03 UTC](https://discourse.nodered.org/t/how-to-send-pictures-to-a-post-api/55294 "2021-12-16T16:03:42Z")

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Hello everyone, I have to dialog with an API who will give me a "score" for each picture I send for deep learning vision. So I'm trying to send pictures to the POST API but as far, i couldn't succeed. The http request…

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## [\[UPDATE\] node-red-contrib-components v0.3.2](https://discourse.nodered.org/t/update-node-red-contrib-components-v0-3-2/55163)

<div class="topic-metadata">

**Author:** [@ollix](https://discourse.nodered.org/u/ollix)\
**Replies:** 4\
**Last updated:** [16 December 2021 16:02 UTC](https://discourse.nodered.org/t/update-node-red-contrib-components-v0-3-2/55163 "2021-12-16T16:02:18Z")

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\[UPDATE\] node-red-contrib-components v0.3.2 Refactoring of the context feature. BREAKING CHANGE again. release 0.2.3 was a breaking change and made old flows not work (sorry for that!) After a user request I decided to …

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## [Can not access editor from another computer](https://discourse.nodered.org/t/can-not-access-editor-from-another-computer/55086)

<div class="topic-metadata">

**Author:** [@haoling](https://discourse.nodered.org/u/haoling)\
**Replies:** 30\
**Last updated:** [16 December 2021 14:50 UTC](https://discourse.nodered.org/t/can-not-access-editor-from-another-computer/55086 "2021-12-16T14:50:20Z")

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Hi there, My node-red is installed in a ubuntu machine(ip: 172.16.11.38) and it is running normal, but when i want to access the editor from another computer by browser(http://172.16.11.38:1880), it shows error: "This s…

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