# Latest

**URL:** https://discourse.nodered.org/latest.md?page=732

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

**Page:** 733

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## [Flow bei Anwesenheit unterbrechen](https://discourse.nodered.org/t/flow-bei-anwesenheit-unterbrechen/51156)

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**Author:** [@haegele100](https://discourse.nodered.org/u/haegele100)\
**Replies:** 5\
**Last updated:** [17 September 2021 18:49 UTC](https://discourse.nodered.org/t/flow-bei-anwesenheit-unterbrechen/51156 "2021-09-17T18:49:20Z")

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Hallo, Ich habe im Forum keine Lösung gefunden wie ich einen Flow (senden von Snapshot per Email) bei Anwesenheit unterbrechen kann. Die Anwesenheit ist über Homematic als Systemvariable erstellt und zugänglich. Gruß

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## [Signed node-red docker images?](https://discourse.nodered.org/t/signed-node-red-docker-images/51133)

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**Author:** [@michael.r](https://discourse.nodered.org/u/michael.r)\
**Replies:** 3\
**Last updated:** [17 September 2021 17:52 UTC](https://discourse.nodered.org/t/signed-node-red-docker-images/51133 "2021-09-17T17:52:27Z")

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I’m using the nodered/node-red image and I’m wondering if it's being signed anywhere I can check. planning on enabling DOCKER\_CONTENT\_TRUST

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## [Problem node-red-contrib-web-worldmap](https://discourse.nodered.org/t/problem-node-red-contrib-web-worldmap/51168)

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**Author:** [@sathit02](https://discourse.nodered.org/u/sathit02)\
**Replies:** 4\
**Last updated:** [17 September 2021 17:36 UTC](https://discourse.nodered.org/t/problem-node-red-contrib-web-worldmap/51168 "2021-09-17T17:36:27Z")

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Sorry for my poor English. Problem == \> I was able to access /World map, but I returned to the page of the UI dashboard and could not enter. 1.. Open the dashboard normally. I can access the page /World map norma…

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## [Send message to another topic](https://discourse.nodered.org/t/send-message-to-another-topic/51170)

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**Author:** [@fikerplunk](https://discourse.nodered.org/u/fikerplunk)\
**Replies:** 3\
**Last updated:** [17 September 2021 16:40 UTC](https://discourse.nodered.org/t/send-message-to-another-topic/51170 "2021-09-17T16:40:45Z")

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Hey guys! I'm new to node-red so I'm not getting a solution to my problem. So I get via mqtt a message that I need to extract some data, and then I need to send two separate messages, one stop each topic, but I'm not a…

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## [Custom logo for button](https://discourse.nodered.org/t/custom-logo-for-button/51160)

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**Author:** [@Sirhc](https://discourse.nodered.org/u/Sirhc)\
**Replies:** 1\
**Last updated:** [17 September 2021 16:32 UTC](https://discourse.nodered.org/t/custom-logo-for-button/51160 "2021-09-17T16:32:03Z")

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Hello I have a button setup in my flow and I would like to customize the icon. My node red home dir is /home/foo/.node-red/images My httpStatic in settings.js is set to httpStatic: '/home/foo/.node-red/', The image i…

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## [How to trigger a web page to pop up the minute a serial output satisfies a condition?](https://discourse.nodered.org/t/how-to-trigger-a-web-page-to-pop-up-the-minute-a-serial-output-satisfies-a-condition/50444)

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**Author:** [@Kanjo](https://discourse.nodered.org/u/Kanjo)\
**Replies:** 17\
**Last updated:** [7 September 2021 14:10 UTC](https://discourse.nodered.org/t/how-to-trigger-a-web-page-to-pop-up-the-minute-a-serial-output-satisfies-a-condition/50444 "2021-09-07T14:10:27Z")

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I recently made a sensor using my Arduino that essentially displays the distance between an object continuously, it outputs to the serial monitor with no issue whatsoever. I wanted to spice it up by connecting it to my P…

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## [Palette - update, install or remove](https://discourse.nodered.org/t/palette-update-install-or-remove/51146)

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**Author:** [@sblogoshs](https://discourse.nodered.org/u/sblogoshs)\
**Replies:** 3\
**Last updated:** [17 September 2021 14:28 UTC](https://discourse.nodered.org/t/palette-update-install-or-remove/51146 "2021-09-17T14:28:37Z")

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Hi :slightly\_smiling\_face: With everything I try to do, whether update, install or delete, I get this error (pic). I don't remember when this started, but it's been like this for a long time now. :frowning\_face:

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## [How to set a Redirect URI in order to receive an access token](https://discourse.nodered.org/t/how-to-set-a-redirect-uri-in-order-to-receive-an-access-token/51159)

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**Author:** [@humphrysr](https://discourse.nodered.org/u/humphrysr)\
**Replies:** 0\
**Last updated:** [17 September 2021 14:01 UTC](https://discourse.nodered.org/t/how-to-set-a-redirect-uri-in-order-to-receive-an-access-token/51159 "2021-09-17T14:01:05Z")

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Is there something to read that illustrates how to set a redirect URI to receive an access token? Using the IBM Node-red Cloud at the moment

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## [Visual feedback on which node is currently running?](https://discourse.nodered.org/t/visual-feedback-on-which-node-is-currently-running/51096)

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**Author:** [@kakyoism](https://discourse.nodered.org/u/kakyoism)\
**Replies:** 2\
**Last updated:** [17 September 2021 13:38 UTC](https://discourse.nodered.org/t/visual-feedback-on-which-node-is-currently-running/51096 "2021-09-17T13:38:10Z")

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I've checked various posts about debugging nodes and so far I've been able to use the debug node, logging, and VS Code debugger. However, during a potentially long-running flow, it would be interesting to know the progr…

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## [Dashboard Error "Connection Lost"](https://discourse.nodered.org/t/dashboard-error-connection-lost/7965)

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**Author:** [@smalhao](https://discourse.nodered.org/u/smalhao)\
**Replies:** 49\
**Last updated:** [17 September 2021 13:28 UTC](https://discourse.nodered.org/t/dashboard-error-connection-lost/7965 "2021-09-17T13:28:36Z")

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I'm having a problem with the dashboard which is as follows, sometimes when the Google Chrome browser does refresh I get a "Connection Lost" error. The sensor data upload server is connected to the network and I am progr…

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## [Restart Timestamp (inject) from the dashboard](https://discourse.nodered.org/t/restart-timestamp-inject-from-the-dashboard/51151)

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**Author:** [@Mrous](https://discourse.nodered.org/u/Mrous)\
**Replies:** 3\
**Last updated:** [17 September 2021 13:04 UTC](https://discourse.nodered.org/t/restart-timestamp-inject-from-the-dashboard/51151 "2021-09-17T13:04:27Z")

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Hi, I want to restart Timestamp (inject) from the dashboard with a button. To do the same operation as when I am on the FLOW and I press the mouse on Timestamp. Thank you

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## [RPI-GPIO-IN not giving the expected output](https://discourse.nodered.org/t/rpi-gpio-in-not-giving-the-expected-output/51109)

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**Author:** [@FeliceM](https://discourse.nodered.org/u/FeliceM)\
**Replies:** 19\
**Last updated:** [17 September 2021 12:21 UTC](https://discourse.nodered.org/t/rpi-gpio-in-not-giving-the-expected-output/51109 "2021-09-17T12:21:32Z")

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I have setup four nodes using the RPI-GPIO-In nodes. I am aiming at storing alarms into Influxdb. If the GPIO is High the function output "1" if GPIO is low the function output a "0". The nodes work correctly when I in…

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## [Problem using msg data in service node](https://discourse.nodered.org/t/problem-using-msg-data-in-service-node/51142)

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**Author:** [@burton666](https://discourse.nodered.org/u/burton666)\
**Replies:** 4\
**Last updated:** [17 September 2021 11:34 UTC](https://discourse.nodered.org/t/problem-using-msg-data-in-service-node/51142 "2021-09-17T11:34:30Z")

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I have tride to create a flow that dims my spotligts depending on the reading from a lux-sensor. But can't figure out how to get the "dimLevel" into my spotligt-service-node. I have tried using debug-nodes and it looks f…

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## [How to change the network interface default node-red chooses](https://discourse.nodered.org/t/how-to-change-the-network-interface-default-node-red-chooses/51015)

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**Author:** [@radjunior](https://discourse.nodered.org/u/radjunior)\
**Replies:** 4\
**Last updated:** [17 September 2021 10:25 UTC](https://discourse.nodered.org/t/how-to-change-the-network-interface-default-node-red-chooses/51015 "2021-09-17T10:25:24Z")

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by default node-red starts with the circled network interface (eno1) I would like it to start at (enp1s2)

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## [Reclaiming memory from Nodes](https://discourse.nodered.org/t/reclaiming-memory-from-nodes/49554)

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**Author:** [@BShashwat](https://discourse.nodered.org/u/BShashwat)\
**Replies:** 21\
**Last updated:** [17 September 2021 10:08 UTC](https://discourse.nodered.org/t/reclaiming-memory-from-nodes/49554 "2021-09-17T10:08:53Z")

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Hi All, I am facing an issue where the custom nodes written by me (they constantly poll s3 to watch for latest files & also polls database to look for change in file ingestion status after running ETL Jobs on files) are…

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## [I wish to use node-red-contrib-tfjs-coco-ssd, train my own model with no experience](https://discourse.nodered.org/t/i-wish-to-use-node-red-contrib-tfjs-coco-ssd-train-my-own-model-with-no-experience/51135)

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**Author:** [@XhanceHd](https://discourse.nodered.org/u/XhanceHd)\
**Replies:** 3\
**Last updated:** [17 September 2021 08:30 UTC](https://discourse.nodered.org/t/i-wish-to-use-node-red-contrib-tfjs-coco-ssd-train-my-own-model-with-no-experience/51135 "2021-09-17T08:30:12Z")

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Hi, I'm working on a project where I need to do image classification or object detection. I wish to know how to use this node " node-red-contrib-tfjs-coco-ssd " it already have a local model and it works fine for genera…

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## [MQTT Out to Cayenne function node example please](https://discourse.nodered.org/t/mqtt-out-to-cayenne-function-node-example-please/51088)

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**Author:** [@Picaxe](https://discourse.nodered.org/u/Picaxe)\
**Replies:** 10\
**Last updated:** [17 September 2021 09:48 UTC](https://discourse.nodered.org/t/mqtt-out-to-cayenne-function-node-example-please/51088 "2021-09-17T09:48:19Z")

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As a complete novice with JSON I would like an example of the code needed in the function node to create a message for a single channel that is sent to Cayenne MyDevices using an MQTT Out node. There are good JSON examp…

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## [\[dev\] i2c openSync seems to work async way](https://discourse.nodered.org/t/dev-i2c-opensync-seems-to-work-async-way/51017)

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**Author:** [@PizzaProgram](https://discourse.nodered.org/u/PizzaProgram)\
**Replies:** 1\
**Last updated:** [17 September 2021 08:10 UTC](https://discourse.nodered.org/t/dev-i2c-opensync-seems-to-work-async-way/51017 "2021-09-17T08:10:59Z")

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I have a big problem: the compoment I'm developing / fixing is almost finished, but the error handling does not work the proper way. I've opened a ticket at the i2c developer's fork, but I'm not sure if it's a compone…

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## ["TypeError: Channel credentials must be a ChannelCredentials object"](https://discourse.nodered.org/t/typeerror-channel-credentials-must-be-a-channelcredentials-object/51056)

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**Author:** [@Nabila](https://discourse.nodered.org/u/Nabila)\
**Replies:** 13\
**Last updated:** [17 September 2021 07:47 UTC](https://discourse.nodered.org/t/typeerror-channel-credentials-must-be-a-channelcredentials-object/51056 "2021-09-17T07:47:05Z")

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Hello I am new to node red and I encountered this error : "TypeError: Channel credentials must be a ChannelCredentials object " Here is the realized schema, Your help please? How will I solve this problem? Thank you …

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## [CSS to enlarge text size of single ui-text node value](https://discourse.nodered.org/t/css-to-enlarge-text-size-of-single-ui-text-node-value/50709)

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**Author:** [@MarkC](https://discourse.nodered.org/u/MarkC)\
**Replies:** 18\
**Last updated:** [9 September 2021 00:52 UTC](https://discourse.nodered.org/t/css-to-enlarge-text-size-of-single-ui-text-node-value/50709 "2021-09-09T00:52:36Z")

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Hi All, Hopefully an easy one - I have searched the forum but can't seem to figure out what I am doing wrong. I simply want to enlarge the text size of a single ui-text node value field. I can successfully enlarge the…

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## [How to get last message in sequence of unknown length (1-3 messages)](https://discourse.nodered.org/t/how-to-get-last-message-in-sequence-of-unknown-length-1-3-messages/51117)

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**Author:** [@tmichaeltx](https://discourse.nodered.org/u/tmichaeltx)\
**Replies:** 14\
**Last updated:** [16 September 2021 21:10 UTC](https://discourse.nodered.org/t/how-to-get-last-message-in-sequence-of-unknown-length-1-3-messages/51117 "2021-09-16T21:10:25Z")

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I have a situation where the join node does 90% of what I want, but doesn't do exactly what I want and am hoping someone has a good solution. As I am showing hear I get Hue, Saturation and Level inputs via 3 separate …

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## [How to append JSON to an array (to be stored in a text file)](https://discourse.nodered.org/t/how-to-append-json-to-an-array-to-be-stored-in-a-text-file/51081)

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**Author:** [@raspberry](https://discourse.nodered.org/u/raspberry)\
**Replies:** 6\
**Last updated:** [16 September 2021 20:29 UTC](https://discourse.nodered.org/t/how-to-append-json-to-an-array-to-be-stored-in-a-text-file/51081 "2021-09-16T20:29:34Z")

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Hey folks, I'm not a javascript wizard by any means so this has me thinking too hard. I want to keep a text file of on/off events that happen over time in an array of JSON strings, which can be loaded into Node-Red with…

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## [JSON Filtering ID and plot the Values](https://discourse.nodered.org/t/json-filtering-id-and-plot-the-values/51062)

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**Author:** [@Gerry1](https://discourse.nodered.org/u/Gerry1)\
**Replies:** 7\
**Last updated:** [16 September 2021 06:09 UTC](https://discourse.nodered.org/t/json-filtering-id-and-plot-the-values/51062 "2021-09-16T06:09:00Z")

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I would like to Filter this json file and plot the values from the ID "15239299475" and "15239299476". I read the file in: And this is how the msg.payload looks like: I need some help with the function box. Tha…

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## [Bigger font size for 6" touchscreen](https://discourse.nodered.org/t/bigger-font-size-for-6-touchscreen/51115)

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**Author:** [@tcr000](https://discourse.nodered.org/u/tcr000)\
**Replies:** 0\
**Last updated:** [16 September 2021 18:11 UTC](https://discourse.nodered.org/t/bigger-font-size-for-6-touchscreen/51115 "2021-09-16T18:11:44Z")

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I am scaling down a dashboard for display on the 6" Pi touchscreen. I started by increasing the 1x1 widget size to 64x64 pixels. I then added a template to increase the font size and icon size. \<style\> body.nr-dashboard…

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## [NODE-RED version 0.20.5 Data Compatibility vs NODE-RED version 0.15.3](https://discourse.nodered.org/t/node-red-version-0-20-5-data-compatibility-vs-node-red-version-0-15-3/51105)

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**Author:** [@RSWebster](https://discourse.nodered.org/u/RSWebster)\
**Replies:** 4\
**Last updated:** [16 September 2021 16:38 UTC](https://discourse.nodered.org/t/node-red-version-0-20-5-data-compatibility-vs-node-red-version-0-15-3/51105 "2021-09-16T16:38:46Z")

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Is anyone aware of payload changes between v.15.3 and v0.20.5 I have two multitech gateways running Lorawan data that is being based through NODE-RED one version is using the v.15 and the other v.20 the payload compariso…

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## [Streaming realtime data between nodes?](https://discourse.nodered.org/t/streaming-realtime-data-between-nodes/51098)

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**Author:** [@kakyoism](https://discourse.nodered.org/u/kakyoism)\
**Replies:** 2\
**Last updated:** [16 September 2021 16:38 UTC](https://discourse.nodered.org/t/streaming-realtime-data-between-nodes/51098 "2021-09-16T16:38:27Z")

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When looking at the custom node sample code, I noticed that the node output is done via node.send(msg) This seems to indicate a fire-and-forget style of unary message. Would it be possible to stream continuous data be…

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## [Uploading picture but failed to get output](https://discourse.nodered.org/t/uploading-picture-but-failed-to-get-output/51099)

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**Author:** [@nurulh1909](https://discourse.nodered.org/u/nurulh1909)\
**Replies:** 1\
**Last updated:** [16 September 2021 13:59 UTC](https://discourse.nodered.org/t/uploading-picture-but-failed-to-get-output/51099 "2021-09-16T13:59:34Z")

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Hi, I got Pen to Print - Handwriting OCR API Documentation from Rapid API and it tested succssfully. But some coing need to be change when I want to use it on Node Red. I use (javascript)fetch as my mode of coding. co…

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## [Receive boolean data from firestore](https://discourse.nodered.org/t/receive-boolean-data-from-firestore/51107)

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**Author:** [@miralis](https://discourse.nodered.org/u/miralis)\
**Replies:** 0\
**Last updated:** [16 September 2021 14:16 UTC](https://discourse.nodered.org/t/receive-boolean-data-from-firestore/51107 "2021-09-16T14:16:02Z")

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Hi everyone, I'm new on node-red. I'm using google firestore + raspberry for node red and PLC system. I would like to receive boolean data from google firestore to node-red and want to save to PLC. My code is like thi…

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## [Subflows & accessing flow/global variables on a per subflow basis (NOT environment variables)](https://discourse.nodered.org/t/subflows-accessing-flow-global-variables-on-a-per-subflow-basis-not-environment-variables/51084)

<div class="topic-metadata">

**Author:** [@GeorgeCastanza](https://discourse.nodered.org/u/GeorgeCastanza)\
**Replies:** 4\
**Last updated:** [16 September 2021 12:55 UTC](https://discourse.nodered.org/t/subflows-accessing-flow-global-variables-on-a-per-subflow-basis-not-environment-variables/51084 "2021-09-16T12:55:03Z")

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I've got a subflow that I'm reusing multiple times. I want to access flow/global variables that are created/modified by the subflow. I've successfully created the flow/global variable by using this code in the subflow. …

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## [Packaging nested subflows](https://discourse.nodered.org/t/packaging-nested-subflows/51101)

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**Author:** [@guidone](https://discourse.nodered.org/u/guidone)\
**Replies:** 0\
**Last updated:** [16 September 2021 12:42 UTC](https://discourse.nodered.org/t/packaging-nested-subflows/51101 "2021-09-16T12:42:50Z")

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I'm having troubles packaging nested subflows into the same npm package (packaging the nodes separately is not an option). I've created a proof of concept with three simple subflows: Subflow A thats uses Subflow B which…

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