# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=238

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

**Page:** 239

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## [Filter msg.payload to get just one debug message](https://discourse.nodered.org/t/filter-msg-payload-to-get-just-one-debug-message/76110)

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**Author:** [@Kayle](https://discourse.nodered.org/u/Kayle)\
**Replies:** 15\
**Last updated:** [5 March 2023 12:05 UTC](https://discourse.nodered.org/t/filter-msg-payload-to-get-just-one-debug-message/76110 "2023-03-05T12:05:25Z")

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Hi, I am reading gpio17 on my Raspberry Pi to trigger a read from a pcf8574. There is a debug node on the output on the pcf8574 node which is displaying 2 messages when gpio17 get HIGH. msg.payload: boolean = true gpi…

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## [Programically control mqtt in and mqtt out nodes](https://discourse.nodered.org/t/programically-control-mqtt-in-and-mqtt-out-nodes/76127)

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**Author:** [@miladmrm](https://discourse.nodered.org/u/miladmrm)\
**Replies:** 2\
**Last updated:** [5 March 2023 11:13 UTC](https://discourse.nodered.org/t/programically-control-mqtt-in-and-mqtt-out-nodes/76127 "2023-03-05T11:13:21Z")

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In my flow, I set an Interval and I send message from mqtt out node repetitiously. Now I want to stop sending programmatically without re-deploy Node-RED. How can I do this? How can I manage mqtt in/out nodes connecti…

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## [Connection refused](https://discourse.nodered.org/t/connection-refused/76014)

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**Author:** [@Giacomo23](https://discourse.nodered.org/u/Giacomo23)\
**Replies:** 5\
**Last updated:** [5 March 2023 10:47 UTC](https://discourse.nodered.org/t/connection-refused/76014 "2023-03-05T10:47:57Z")

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Hi everyone, I'm trying to insert a link (test.local:3456) inside my dashboard but I get the connection refused error. If I try other links like the node red one as well as test.local:1880 then it shows me i used …

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## [Streaming video on uibuilder](https://discourse.nodered.org/t/streaming-video-on-uibuilder/76023)

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**Author:** [@miladmrm](https://discourse.nodered.org/u/miladmrm)\
**Replies:** 2\
**Last updated:** [5 March 2023 10:22 UTC](https://discourse.nodered.org/t/streaming-video-on-uibuilder/76023 "2023-03-05T10:22:22Z")

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I have a hastily question, so I want to make sure before I try to do it because I have limit time. If I want to receive a streaming video with the HTTP protocol in Node-RED and show it in the UIBuilder, I won't have a p…

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## [Processing PIR sensor status from Arduino over serial: Timers](https://discourse.nodered.org/t/processing-pir-sensor-status-from-arduino-over-serial-timers/76120)

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**Author:** [@richiep](https://discourse.nodered.org/u/richiep)\
**Replies:** 2\
**Last updated:** [5 March 2023 01:09 UTC](https://discourse.nodered.org/t/processing-pir-sensor-status-from-arduino-over-serial-timers/76120 "2023-03-05T01:09:12Z")

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Hey All, I have a PIR sensor attached to an Arduino sending data over serial to a Raspberry Pi to toggle a pin on the Arduino. I have a flow that works when I use a trigger but when the PIR sensor sends the variable it…

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## [Saving and repopulating graph data using JSON](https://discourse.nodered.org/t/saving-and-repopulating-graph-data-using-json/76033)

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**Author:** [@richiep](https://discourse.nodered.org/u/richiep)\
**Replies:** 2\
**Last updated:** [5 March 2023 00:28 UTC](https://discourse.nodered.org/t/saving-and-repopulating-graph-data-using-json/76033 "2023-03-05T00:28:47Z")

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I have a graph that saves JSON data to a text on a Raspberry Pi and that works as it should. When I restart Node-Red I want to retrieve that data and repopulate the graph. I'm able to fetch the data but I get an error …

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## [Receiving inputs but outputs not sending/coils not opening and closing between 2 IOEX-4422 radios](https://discourse.nodered.org/t/receiving-inputs-but-outputs-not-sending-coils-not-opening-and-closing-between-2-ioex-4422-radios/76108)

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**Author:** [@bradjeppers](https://discourse.nodered.org/u/bradjeppers)\
**Replies:** 1\
**Last updated:** [4 March 2023 23:29 UTC](https://discourse.nodered.org/t/receiving-inputs-but-outputs-not-sending-coils-not-opening-and-closing-between-2-ioex-4422-radios/76108 "2023-03-04T23:29:39Z")

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Hello everyone, I'm hoping to find some answers on some Freewave programming through NodeRed. Hoping someone is proficient in this and is able to help. We've tried everything and nothing is seeming to work. We are recei…

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## [Yield forecast with Solcast kW -\> kWh](https://discourse.nodered.org/t/yield-forecast-with-solcast-kw-kwh/75996)

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**Author:** [@Becker](https://discourse.nodered.org/u/Becker)\
**Replies:** 12\
**Last updated:** [4 March 2023 19:45 UTC](https://discourse.nodered.org/t/yield-forecast-with-solcast-kw-kwh/75996 "2023-03-04T19:45:34Z")

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Hi, I'm amazed at how well Solcast hits the yield curve: I would like to use the forecast daily yield to calculate with it. In Grafana I use integral by 1 day. Solcast gives just every 30min the power, but not the …

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## [Question on timer](https://discourse.nodered.org/t/question-on-timer/76098)

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**Author:** [@fvsc](https://discourse.nodered.org/u/fvsc)\
**Replies:** 6\
**Last updated:** [4 March 2023 11:42 UTC](https://discourse.nodered.org/t/question-on-timer/76098 "2023-03-04T11:42:59Z")

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Hello all. I'm new to Node Red and I have I question about timers. I receive several MQTT msg for different motion sensors and these control different lamps which must stay on for different times. My question: is the…

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## [Comparing two variables to see if one is at-least 50 higher than the other](https://discourse.nodered.org/t/comparing-two-variables-to-see-if-one-is-at-least-50-higher-than-the-other/76083)

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**Author:** [@MonolithNZ](https://discourse.nodered.org/u/MonolithNZ)\
**Replies:** 8\
**Last updated:** [3 March 2023 23:58 UTC](https://discourse.nodered.org/t/comparing-two-variables-to-see-if-one-is-at-least-50-higher-than-the-other/76083 "2023-03-03T23:58:04Z")

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Hi there. Apologies If I posted this in the wrong section of the forum. I have Node-Red installed on my home assistance instance. I'm quite new to Node-Red and I'm struggling to create a flow for my robot vacuum. I have…

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## [Openweather node question - how to filter outputs](https://discourse.nodered.org/t/openweather-node-question-how-to-filter-outputs/76027)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [3 March 2023 22:46 UTC](https://discourse.nodered.org/t/openweather-node-question-how-to-filter-outputs/76027 "2023-03-03T22:46:18Z")

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Folks, I'm confused. I have my openweather node and see it's output. I am interested in the rain output. If it isn't raining, I'm stuck how to filter the message. Example/s: No rain: {"\_msgid":"02bbdb546cecd8f5","p…

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## [Connection closed to http://supervisor/core Loop](https://discourse.nodered.org/t/connection-closed-to-http-supervisor-core-loop/76067)

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**Author:** [@Der\_TJ](https://discourse.nodered.org/u/Der_TJ)\
**Replies:** 3\
**Last updated:** [3 March 2023 21:56 UTC](https://discourse.nodered.org/t/connection-closed-to-http-supervisor-core-loop/76067 "2023-03-03T21:56:13Z")

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For months now I have had the problem that Node red installed on homassitant, at some point goes into a loop of connecting and disconnecting http://supervisor/core and I can’t make sense of the logs that homassistant giv…

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## [Google home - recognition of a member of the house](https://discourse.nodered.org/t/google-home-recognition-of-a-member-of-the-house/76080)

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**Author:** [@Continuous2Discrete](https://discourse.nodered.org/u/Continuous2Discrete)\
**Replies:** 0\
**Last updated:** [3 March 2023 20:29 UTC](https://discourse.nodered.org/t/google-home-recognition-of-a-member-of-the-house/76080 "2023-03-03T20:29:32Z")

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As we know google home has not allowed to limit the rights of house members for years. Is it possible to recognize which member of the house sent the command? This would allow to limit the rights of house members local…

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## [Delay node losing messages](https://discourse.nodered.org/t/delay-node-losing-messages/76029)

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**Author:** [@jdonkinMotiv](https://discourse.nodered.org/u/jdonkinMotiv)\
**Replies:** 10\
**Last updated:** [3 March 2023 17:15 UTC](https://discourse.nodered.org/t/delay-node-losing-messages/76029 "2023-03-03T17:15:05Z")

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I am using the Cron Node Plus node to do multi day delays on my workflows. I am finding that the multi day delays disappear before they fire. Does anyone know any reason why multi day delays would disappear from the dy…

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## [Performance change in handling messages between version 1.x and 2.x](https://discourse.nodered.org/t/performance-change-in-handling-messages-between-version-1-x-and-2-x/75969)

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**Author:** [@jfuerth](https://discourse.nodered.org/u/jfuerth)\
**Replies:** 19\
**Last updated:** [3 March 2023 19:30 UTC](https://discourse.nodered.org/t/performance-change-in-handling-messages-between-version-1-x-and-2-x/75969 "2023-03-03T19:30:54Z")

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Hi, I've been using an older version of Node-RED (1.2.9) for a while and it has been working great. I have flows that are handling multiple thousands of messages per second coming from a message broker. I recently decid…

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## [Converting MODBUS data to date-time with Array](https://discourse.nodered.org/t/converting-modbus-data-to-date-time-with-array/76060)

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**Author:** [@sefaguntepe](https://discourse.nodered.org/u/sefaguntepe)\
**Replies:** 6\
**Last updated:** [3 March 2023 17:09 UTC](https://discourse.nodered.org/t/converting-modbus-data-to-date-time-with-array/76060 "2023-03-03T17:09:43Z")

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Hello, how can I convert the quad data from MODBUS to date-time? 0: 23 1: 514 2: 2310 3: 59000

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## [How to display a "message" from within a flow function](https://discourse.nodered.org/t/how-to-display-a-message-from-within-a-flow-function/76064)

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**Author:** [@gNeandr](https://discourse.nodered.org/u/gNeandr)\
**Replies:** 13\
**Last updated:** [3 March 2023 17:06 UTC](https://discourse.nodered.org/t/how-to-display-a-message-from-within-a-flow-function/76064 "2023-03-03T17:06:31Z")

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From within a flow js function using a console.log is easy to use. But how to display that message/string to the dashboard display? The page RED.notify : Node-RED has a line: RED.notify("Hello World"); Seems that's no…

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## [Node-Red save to Postgres](https://discourse.nodered.org/t/node-red-save-to-postgres/75974)

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**Author:** [@Chrolloo123](https://discourse.nodered.org/u/Chrolloo123)\
**Replies:** 4\
**Last updated:** [3 March 2023 16:42 UTC](https://discourse.nodered.org/t/node-red-save-to-postgres/75974 "2023-03-03T16:42:03Z")

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I have a flow that received mqtt and save to postgres using re-postgres. Here's my flow. \[ { "id": "03a53e00c9c78103", "type": "function", "z": "14ee6d7566a42e0e", "name": "function 3…

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## [Trouble reading from JSObject created from XML](https://discourse.nodered.org/t/trouble-reading-from-jsobject-created-from-xml/75947)

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**Author:** [@Darren](https://discourse.nodered.org/u/Darren)\
**Replies:** 7\
**Last updated:** [3 March 2023 15:40 UTC](https://discourse.nodered.org/t/trouble-reading-from-jsobject-created-from-xml/75947 "2023-03-03T15:40:13Z")

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I'm trying to use a flow to process an XML generated by GXWorks3 for industrial PLCs into some sort of array for use in more complex flows. I've puzzled over it for a couple days, tried ChatGPT, and finally turn to the f…

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## [How to pass the msg parameters through a node?](https://discourse.nodered.org/t/how-to-pass-the-msg-parameters-through-a-node/75787)

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**Author:** [@Josh](https://discourse.nodered.org/u/Josh)\
**Replies:** 6\
**Last updated:** [3 March 2023 14:31 UTC](https://discourse.nodered.org/t/how-to-pass-the-msg-parameters-through-a-node/75787 "2023-03-03T14:31:06Z")

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Hi I guess my question topic is slightly wrong. Anyways Ill explain here in detail. I have a Node A wanting to pass msg.(anythin) to Node C. But my Node B ( Being a custom node built by a community member) does not pass…

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## [Can any one tel me how can i login to my raspberry ui dashboard on different wifi router ip](https://discourse.nodered.org/t/can-any-one-tel-me-how-can-i-login-to-my-raspberry-ui-dashboard-on-different-wifi-router-ip/76047)

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**Author:** [@issambfs1](https://discourse.nodered.org/u/issambfs1)\
**Replies:** 3\
**Last updated:** [3 March 2023 14:12 UTC](https://discourse.nodered.org/t/can-any-one-tel-me-how-can-i-login-to-my-raspberry-ui-dashboard-on-different-wifi-router-ip/76047 "2023-03-03T14:12:39Z")

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can any one tel me how can i login to my raspberry ui dashboard on different wifi router ip or any connection internet . not local !

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## [How to set an output that requires both switch and setpoint criteria?](https://discourse.nodered.org/t/how-to-set-an-output-that-requires-both-switch-and-setpoint-criteria/76038)

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**Author:** [@CoryD](https://discourse.nodered.org/u/CoryD)\
**Replies:** 1\
**Last updated:** [3 March 2023 13:59 UTC](https://discourse.nodered.org/t/how-to-set-an-output-that-requires-both-switch-and-setpoint-criteria/76038 "2023-03-03T13:59:56Z")

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Hi, I'm trying to control an I/O module to turn on/off some Heater relays based on some input temperatures and a set point. I've created a very basic Dashboard and some Node-RED logic to do this, and I am struggling to g…

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## [IOT Remote Monitoring and SSH](https://discourse.nodered.org/t/iot-remote-monitoring-and-ssh/76054)

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**Author:** [@ankit.prasad](https://discourse.nodered.org/u/ankit.prasad)\
**Replies:** 3\
**Last updated:** [3 March 2023 13:57 UTC](https://discourse.nodered.org/t/iot-remote-monitoring-and-ssh/76054 "2023-03-03T13:57:35Z")

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If we have many Raspberry Pi how can we keep the Pi's connected to a central server and can reverse connect to the server . Devices are behind NAT . Whats Open Source Packages or Docker Images can we use . for remote …

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## [Mysql-r2 define port](https://discourse.nodered.org/t/mysql-r2-define-port/76018)

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**Author:** [@dgagliadi](https://discourse.nodered.org/u/dgagliadi)\
**Replies:** 5\
**Last updated:** [3 March 2023 13:43 UTC](https://discourse.nodered.org/t/mysql-r2-define-port/76018 "2023-03-03T13:43:51Z")

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I am trying to connect to a DB at port 1433. I can connect to the DB via SQL Server Management Studio without issue. But when I run node-red from the same PC, i cannot connect to the db. I've tried both the mysql and …

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## [Unable to install a new palette](https://discourse.nodered.org/t/unable-to-install-a-new-palette/76010)

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**Author:** [@Apollo13](https://discourse.nodered.org/u/Apollo13)\
**Replies:** 7\
**Last updated:** [3 March 2023 11:30 UTC](https://discourse.nodered.org/t/unable-to-install-a-new-palette/76010 "2023-03-03T11:30:48Z")

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I'm not able to install a new palette. If I try to install one, following error occurs: 2023-03-02T17:44:06.576Z npm install --no-audit --no-update-notifier --no-fund --save --save-prefix=~ --production --engine-strict …

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## [Change trigger delay value with numeric dashboard input](https://discourse.nodered.org/t/change-trigger-delay-value-with-numeric-dashboard-input/76051)

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**Author:** [@Andre7tyone](https://discourse.nodered.org/u/Andre7tyone)\
**Replies:** 5\
**Last updated:** [3 March 2023 11:14 UTC](https://discourse.nodered.org/t/change-trigger-delay-value-with-numeric-dashboard-input/76051 "2023-03-03T11:14:52Z")

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I want do increase or decrease the trigger delay of the trigger node with a numeric dashbord node. Tried it, but found no solution :frowning:

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## [Stop the flow, if there's no more mqtt-topics coming in](https://discourse.nodered.org/t/stop-the-flow-if-theres-no-more-mqtt-topics-coming-in/76013)

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**Author:** [@binderth](https://discourse.nodered.org/u/binderth)\
**Replies:** 5\
**Last updated:** [3 March 2023 10:47 UTC](https://discourse.nodered.org/t/stop-the-flow-if-theres-no-more-mqtt-topics-coming-in/76013 "2023-03-03T10:47:26Z")

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So, I've got a cyclic "keep-alive" flow, which keeps sending flow-variables to a specific endpoint. That's ok, but I'd like the flow to stop, if there's no more mqtt-topic coming in. Presently I'm subscribing to a bunc…

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## [How to move s3 object from one bucket to another using node red](https://discourse.nodered.org/t/how-to-move-s3-object-from-one-bucket-to-another-using-node-red/76046)

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**Author:** [@nit-cyber](https://discourse.nodered.org/u/nit-cyber)\
**Replies:** 0\
**Last updated:** [3 March 2023 08:25 UTC](https://discourse.nodered.org/t/how-to-move-s3-object-from-one-bucket-to-another-using-node-red/76046 "2023-03-03T08:25:34Z")

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How to move s3 object from one bucket to another using node red. Please reply thanks

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## [Node Red to Postgres (closed - duplicate)](https://discourse.nodered.org/t/node-red-to-postgres-closed-duplicate/76041)

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**Author:** [@Chrolloo123](https://discourse.nodered.org/u/Chrolloo123)\
**Replies:** 1\
**Last updated:** [3 March 2023 08:18 UTC](https://discourse.nodered.org/t/node-red-to-postgres-closed-duplicate/76041 "2023-03-03T08:18:27Z")

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hello. So I switched to node-red-contrib-postgrestor-next and It's actually working but for some reason I have a problem in json format. I have a posgres column that is jsonb and when I tried to deploy I encounter an err…

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## [I can't connect 2 IPs with mqtt in localhost](https://discourse.nodered.org/t/i-cant-connect-2-ips-with-mqtt-in-localhost/75989)

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**Author:** [@ManuGW](https://discourse.nodered.org/u/ManuGW)\
**Replies:** 11\
**Last updated:** [3 March 2023 08:11 UTC](https://discourse.nodered.org/t/i-cant-connect-2-ips-with-mqtt-in-localhost/75989 "2023-03-03T08:11:20Z")

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Hi, I'm Manu I'm using an IOT from where I collect a digital signal coming from a photocell and transform it into a data insertion in a database, but I want to send it through mqtt from the IOT to a PC. It makes the con…

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