# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=500

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

**Page:** 501

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## [Access Node Red from two subnets](https://discourse.nodered.org/t/access-node-red-from-two-subnets/50018)

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**Author:** [@jwtaylor](https://discourse.nodered.org/u/jwtaylor)\
**Replies:** 37\
**Last updated:** [1 September 2021 22:19 UTC](https://discourse.nodered.org/t/access-node-red-from-two-subnets/50018 "2021-09-01T22:19:08Z")

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I have two subnets, 192.168.100.x and 192.168.200.x behind a commercial firewall. Node Red is running on the first subnet on a Pi with static IP 192.168.100.100. I can connect to Node Red without any problems from any …

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## [Enter the email recipient in the dashboard](https://discourse.nodered.org/t/enter-the-email-recipient-in-the-dashboard/50514)

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**Author:** [@volker1078](https://discourse.nodered.org/u/volker1078)\
**Replies:** 1\
**Last updated:** [1 September 2021 19:59 UTC](https://discourse.nodered.org/t/enter-the-email-recipient-in-the-dashboard/50514 "2021-09-01T19:59:33Z")

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Hello, is there a way to use the dashboard to enter an email address as a recipient for the email node? I imagine several fields where an email address is entered in each case. Behind it comes a switch with which you can…

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## [Sorting array values](https://discourse.nodered.org/t/sorting-array-values/48532)

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**Author:** [@Duncan](https://discourse.nodered.org/u/Duncan)\
**Replies:** 22\
**Last updated:** [1 September 2021 19:47 UTC](https://discourse.nodered.org/t/sorting-array-values/48532 "2021-09-01T19:47:51Z")

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what function or node can I use to sort the values in an array. I have the folowing output: I have tried the sort node but I need to keep the id before the value eg: high\_1:10 (high\_1 needs to be kept so I can identif…

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## [Cast to google nest more than 200 char](https://discourse.nodered.org/t/cast-to-google-nest-more-than-200-char/50467)

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**Author:** [@GIGS1975](https://discourse.nodered.org/u/GIGS1975)\
**Replies:** 4\
**Last updated:** [1 September 2021 18:27 UTC](https://discourse.nodered.org/t/cast-to-google-nest-more-than-200-char/50467 "2021-09-01T18:27:12Z")

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Hello there, i would rellally appreciate any help. Is there any chance to send to google tts more than 200 char with node-red-cast plugin? Or in any other way? Thanks in advance

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## [Help with some conditionals](https://discourse.nodered.org/t/help-with-some-conditionals/50460)

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**Author:** [@muddro1](https://discourse.nodered.org/u/muddro1)\
**Replies:** 5\
**Last updated:** [1 September 2021 16:08 UTC](https://discourse.nodered.org/t/help-with-some-conditionals/50460 "2021-09-01T16:08:12Z")

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I am trying to set up a flow that sets an input\_select in home assistant in the most efficient manner. Basically, any time someone's status changes I want it to evaluate the group status. I cannot use the group function …

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## [Node-red and Knative](https://discourse.nodered.org/t/node-red-and-knative/50484)

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**Author:** [@rorokoko](https://discourse.nodered.org/u/rorokoko)\
**Replies:** 2\
**Last updated:** [1 September 2021 14:55 UTC](https://discourse.nodered.org/t/node-red-and-knative/50484 "2021-09-01T14:55:27Z")

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Hi, I was going through this article today -- Node-RED Hits 1.0, Looks to a Serverless, Microservices Future – The New Stack -- and read that there are some ideas around integrating Node-red with Knative. While this sou…

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## [How to extract a property from an object containing "/"](https://discourse.nodered.org/t/how-to-extract-a-property-from-an-object-containing/50498)

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**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\
**Replies:** 3\
**Last updated:** [1 September 2021 13:09 UTC](https://discourse.nodered.org/t/how-to-extract-a-property-from-an-object-containing/50498 "2021-09-01T13:09:29Z")

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Hi mates, I would use a node that works good, but unfortunately the author decided to output an object which I can't easly address in NR, this is the picture: I can't type in a function: var ADC0 = msg.payload./dev/i…

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## [Issue with external module](https://discourse.nodered.org/t/issue-with-external-module/50500)

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**Author:** [@Tonna100](https://discourse.nodered.org/u/Tonna100)\
**Replies:** 12\
**Last updated:** [1 September 2021 12:58 UTC](https://discourse.nodered.org/t/issue-with-external-module/50500 "2021-09-01T12:58:57Z")

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Hi averyone. Need help. I got the issue in Node-red require() of ES modules is not supported. require() of /home/ubuntu/scalar-crm-integration/externalModules/node\_modules/node-fetch/src/index.js from /usr/lib/node\_modu…

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## [S7-node/DataBase](https://discourse.nodered.org/t/s7-node-database/50494)

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**Author:** [@grandautism](https://discourse.nodered.org/u/grandautism)\
**Replies:** 2\
**Last updated:** [1 September 2021 12:31 UTC](https://discourse.nodered.org/t/s7-node-database/50494 "2021-09-01T12:31:58Z")

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Hello, I have a question, I read data of the sensors from API by S7 node, and I send this data to a database that I created. What I want to do is that if I add a sensor, I want it to be added without modifying my node o…

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## [I don't want to use credentialSecret and I don't need encryption](https://discourse.nodered.org/t/i-dont-want-to-use-credentialsecret-and-i-dont-need-encryption/50399)

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**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\
**Replies:** 4\
**Last updated:** [1 September 2021 11:59 UTC](https://discourse.nodered.org/t/i-dont-want-to-use-credentialsecret-and-i-dont-need-encryption/50399 "2021-09-01T11:59:25Z")

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Hi mates, when I start NR it shows me: Your flow credentials file is encrypted using a system-generated key. If the system-generated key is lost for any reason, your credentials file will not be recoverable, you will ha…

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## [How to insert data with this string value and how to split it, i new for using node-red](https://discourse.nodered.org/t/how-to-insert-data-with-this-string-value-and-how-to-split-it-i-new-for-using-node-red/50248)

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**Author:** [@erdowaka](https://discourse.nodered.org/u/erdowaka)\
**Replies:** 7\
**Last updated:** [1 September 2021 10:43 UTC](https://discourse.nodered.org/t/how-to-insert-data-with-this-string-value-and-how-to-split-it-i-new-for-using-node-red/50248 "2021-09-01T10:43:50Z")

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help me for this problem

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## [Smart nora and rooted toon thermostat](https://discourse.nodered.org/t/smart-nora-and-rooted-toon-thermostat/50487)

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**Author:** [@djMvT](https://discourse.nodered.org/u/djMvT)\
**Replies:** 0\
**Last updated:** [1 September 2021 08:17 UTC](https://discourse.nodered.org/t/smart-nora-and-rooted-toon-thermostat/50487 "2021-09-01T08:17:35Z")

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Looking for a way to get my rooted toon thermostat working with smart Nora and thus enabling voice control through some flows. I know how to connect to the API of the rooted toon but I don't know how to parse the data s…

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## [I don't arrive to send an email with node email](https://discourse.nodered.org/t/i-dont-arrive-to-send-an-email-with-node-email/49947)

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**Author:** [@nke9](https://discourse.nodered.org/u/nke9)\
**Replies:** 38\
**Last updated:** [1 September 2021 08:27 UTC](https://discourse.nodered.org/t/i-dont-arrive-to-send-an-email-with-node-email/49947 "2021-09-01T08:27:21Z")

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The email send failed. And I got this error message : "Error: Connect ECONNREFUSED ipaddres:465" Someone have some suggestions ?

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## [Node-red-contrib-openhab3 MODULE\_NOT\_FOUND](https://discourse.nodered.org/t/node-red-contrib-openhab3-module-not-found/50458)

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**Author:** [@Sturgeon](https://discourse.nodered.org/u/Sturgeon)\
**Replies:** 9\
**Last updated:** [1 September 2021 08:24 UTC](https://discourse.nodered.org/t/node-red-contrib-openhab3-module-not-found/50458 "2021-09-01T08:24:42Z")

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Hi! I update my OpenHAB to 3.0 version and want to connect it to Node-RED. I nstall node-red-contrib-openhab3 but i have error on palette manager like picture. I cant uninstall node, I cant reinstall node. In NodeRed…

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## [Special hysteresis](https://discourse.nodered.org/t/special-hysteresis/50448)

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**Author:** [@Duncan](https://discourse.nodered.org/u/Duncan)\
**Replies:** 9\
**Last updated:** [1 September 2021 08:17 UTC](https://discourse.nodered.org/t/special-hysteresis/50448 "2021-09-01T08:17:32Z")

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I need help with the following problem. I am using a hysteresis node to determine the switching of an output by using an incoming variable. Furthermore I am using a variable to determine the high band and the low band li…

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## [Node Red Error : Received msg before firebase.once() node was ready. Not processing:](https://discourse.nodered.org/t/node-red-error-received-msg-before-firebase-once-node-was-ready-not-processing/50483)

<div class="topic-metadata">

**Author:** [@kavimuthuraja.s](https://discourse.nodered.org/u/kavimuthuraja.s)\
**Replies:** 0\
**Last updated:** [1 September 2021 07:33 UTC](https://discourse.nodered.org/t/node-red-error-received-msg-before-firebase-once-node-was-ready-not-processing/50483 "2021-09-01T07:33:39Z")

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Hi, I have a firebase real-time database and node red service which is running perfectly but suddenly it stopped working and showing error like "Received msg before firebase.once() node was ready. Not processing:". At …

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## [Help with BlueTooth protocol](https://discourse.nodered.org/t/help-with-bluetooth-protocol/50475)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 6\
**Last updated:** [1 September 2021 06:59 UTC](https://discourse.nodered.org/t/help-with-bluetooth-protocol/50475 "2021-09-01T06:59:36Z")

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Sorry folks I know it is kind of Off topic to Node-Red, but I have to start somewhere. Connecting devices is usually done via WiFi or Ethernet. Can Bluetooth work? I want to send messages (MQTT at a push) and am not s…

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## [Import / Export flows or nodes to multiple NODE-RED devices](https://discourse.nodered.org/t/import-export-flows-or-nodes-to-multiple-node-red-devices/50433)

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**Author:** [@JeanPaul99](https://discourse.nodered.org/u/JeanPaul99)\
**Replies:** 1\
**Last updated:** [1 September 2021 06:42 UTC](https://discourse.nodered.org/t/import-export-flows-or-nodes-to-multiple-node-red-devices/50433 "2021-09-01T06:42:20Z")

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Hello, I am relatively new to NODE-RED. I have modified a node in my flow and I would like to export that change to many more devices that have the same program. There are a lot of IOT devices... about 30... To export…

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## [How to Merge 4 Arrays Into Array of Objects?](https://discourse.nodered.org/t/how-to-merge-4-arrays-into-array-of-objects/50462)

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**Author:** [@geoseph](https://discourse.nodered.org/u/geoseph)\
**Replies:** 10\
**Last updated:** [31 August 2021 23:02 UTC](https://discourse.nodered.org/t/how-to-merge-4-arrays-into-array-of-objects/50462 "2021-08-31T23:02:39Z")

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Hey everyone! So once again my pea brain is failing me lol. I'm trying to figure out how to merge 4 Arrays into an Array of Objects (each of the Arrays has up to 20 strings inside it). Here are a sample of the Arrays…

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## [Whats the best way to work out this checksum?](https://discourse.nodered.org/t/whats-the-best-way-to-work-out-this-checksum/50414)

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**Author:** [@craigcurtin](https://discourse.nodered.org/u/craigcurtin)\
**Replies:** 6\
**Last updated:** [31 August 2021 20:15 UTC](https://discourse.nodered.org/t/whats-the-best-way-to-work-out-this-checksum/50414 "2021-08-31T20:15:10Z")

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Guys, I am working through the control of my new inverters and batteries and have worked out the next stage of sending data to them in the correct format. Basically it is a hex string such as aa55c07f02390b070d040000…

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## [Passing SVG code to template\_UI - not showing in dashboard](https://discourse.nodered.org/t/passing-svg-code-to-template-ui-not-showing-in-dashboard/50411)

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**Author:** [@adiculiniute](https://discourse.nodered.org/u/adiculiniute)\
**Replies:** 11\
**Last updated:** [31 August 2021 20:02 UTC](https://discourse.nodered.org/t/passing-svg-code-to-template-ui-not-showing-in-dashboard/50411 "2021-08-31T20:02:48Z")

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Hello! I spend days to achieve this, and I did not manage to success.. I have a PHP script that renders a SVG code, (drawing a boiler). In browser everything is Ok. In node-red I am using an httprequest to output the …

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## [SMTP server to receive notifications from devices that send mail](https://discourse.nodered.org/t/smtp-server-to-receive-notifications-from-devices-that-send-mail/50455)

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**Author:** [@quarfie](https://discourse.nodered.org/u/quarfie)\
**Replies:** 2\
**Last updated:** [31 August 2021 18:57 UTC](https://discourse.nodered.org/t/smtp-server-to-receive-notifications-from-devices-that-send-mail/50455 "2021-08-31T18:57:29Z")

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I have a device that sends email notifications to a configured smtp server. I would like like Node-RED to handle this more like a webhook, where it receives the email from the device and passes the contents to the next …

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## [Using variables to program Eztimer error: Invalid object (msg.payload) input](https://discourse.nodered.org/t/using-variables-to-program-eztimer-error-invalid-object-msg-payload-input/50452)

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**Author:** [@smithy](https://discourse.nodered.org/u/smithy)\
**Replies:** 2\
**Last updated:** [31 August 2021 16:13 UTC](https://discourse.nodered.org/t/using-variables-to-program-eztimer-error-invalid-object-msg-payload-input/50452 "2021-08-31T16:13:44Z")

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Trying to program Eztimer on and off time without success, I assume the problem is with the input to Eztimer not being the right type, I have tried converting object to JSON string with JSON node and also using mustache …

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## [Heatmap in Worldmap with timestamp conditional](https://discourse.nodered.org/t/heatmap-in-worldmap-with-timestamp-conditional/50438)

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**Author:** [@cheezum](https://discourse.nodered.org/u/cheezum)\
**Replies:** 3\
**Last updated:** [31 August 2021 15:46 UTC](https://discourse.nodered.org/t/heatmap-in-worldmap-with-timestamp-conditional/50438 "2021-08-31T15:46:27Z")

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Hi, I'm using Worldmap (2.15.5) to visualize traffic. To visualize any traffic jam, I would like to use the heatmap function on it. It's really cool. However, I can't find a way to remove drawn points after a specific t…

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## [Node-red-contrib-ldap-login not returning users attributes v0.0.15](https://discourse.nodered.org/t/node-red-contrib-ldap-login-not-returning-users-attributes-v0-0-15/50439)

<div class="topic-metadata">

**Author:** [@notnice](https://discourse.nodered.org/u/notnice)\
**Replies:** 2\
**Last updated:** [31 August 2021 13:53 UTC](https://discourse.nodered.org/t/node-red-contrib-ldap-login-not-returning-users-attributes-v0-0-15/50439 "2021-08-31T13:53:38Z")

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I have tried both AD login and LDAP find nodes. Both return a bind success, but neither return any user/group attributes. If I include msg.ad\_attributes with JSON as specified on GitHub I still get no values for the att…

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## [Node-Red start up cycle](https://discourse.nodered.org/t/node-red-start-up-cycle/50249)

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**Author:** [@Duncan](https://discourse.nodered.org/u/Duncan)\
**Replies:** 7\
**Last updated:** [31 August 2021 13:24 UTC](https://discourse.nodered.org/t/node-red-start-up-cycle/50249 "2021-08-31T13:24:29Z")

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Good morning all, I need advice with the Node-Red start up cycle. I have several relay outputs controlled by a Modbus node. These outputs are controlled by several variable comparisons and calculations coming from a fiel…

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## [Fail Install node-red](https://discourse.nodered.org/t/fail-install-node-red/50378)

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**Author:** [@marko033](https://discourse.nodered.org/u/marko033)\
**Replies:** 2\
**Last updated:** [31 August 2021 12:57 UTC](https://discourse.nodered.org/t/fail-install-node-red/50378 "2021-08-31T12:57:04Z")

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Hi, I tried to install node-red I have PC behind corporate proxy but I have set correct proxy setting. during installation i get error: node-pre-gyp ERR! install response status 403 Forbidden on https://github.com/kelek…

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## [RTD 8 channel hat with Raspberry Pi 4 (Need help to read temperature from PT100)](https://discourse.nodered.org/t/rtd-8-channel-hat-with-raspberry-pi-4-need-help-to-read-temperature-from-pt100/50272)

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**Author:** [@cjnavi](https://discourse.nodered.org/u/cjnavi)\
**Replies:** 8\
**Last updated:** [31 August 2021 12:19 UTC](https://discourse.nodered.org/t/rtd-8-channel-hat-with-raspberry-pi-4-need-help-to-read-temperature-from-pt100/50272 "2021-08-31T12:19:13Z")

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Hi All, I am new for node red and using 8 channel RTD HAT with Raspberry Pi4. could you lease help me to configure RTD sensors like PT-100 with given board? with help of Node-red or Python script. Thanks in advance.... …

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## [Node-red-contrib-flow-manager -\> flow-manager-nodes-order.json](https://discourse.nodered.org/t/node-red-contrib-flow-manager-flow-manager-nodes-order-json/50434)

<div class="topic-metadata">

**Author:** [@eastling](https://discourse.nodered.org/u/eastling)\
**Replies:** 0\
**Last updated:** [31 August 2021 11:25 UTC](https://discourse.nodered.org/t/node-red-contrib-flow-manager-flow-manager-nodes-order-json/50434 "2021-08-31T11:25:20Z")

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Hi, We are using node-red-contrib-flow-manager to split up our flow to make version handling of the flows more manageable. However the file "flow-manager-nodes-order.json" generated by the library just contain an array…

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## [Modbus Write Issues](https://discourse.nodered.org/t/modbus-write-issues/50429)

<div class="topic-metadata">

**Author:** [@gjones84](https://discourse.nodered.org/u/gjones84)\
**Replies:** 0\
**Last updated:** [31 August 2021 09:51 UTC](https://discourse.nodered.org/t/modbus-write-issues/50429 "2021-08-31T09:51:39Z")

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Hi All, I am currently using the node-red-contrib-modbus node to write a value to my Victron Multiplus 2 Inverter/charger. I am running mode 3 which is my own contol loop using node red. A new value must be written ever…

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