# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=366

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

**Page:** 367

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## [Tracking visibility status of a node](https://discourse.nodered.org/t/tracking-visibility-status-of-a-node/63686)

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**Author:** [@DanielEcheverri](https://discourse.nodered.org/u/DanielEcheverri)\
**Replies:** 0\
**Last updated:** [9 June 2022 14:58 UTC](https://discourse.nodered.org/t/tracking-visibility-status-of-a-node/63686 "2022-06-09T14:58:15Z")

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Hi. I have created three switch toggles (ui-switch) to control the visibility of three groups (B, Y, and Dev). Each group makes an HTTP GET request to a server and displays the values of two variables (A and B) on two te…

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## [Expiration date of a product](https://discourse.nodered.org/t/expiration-date-of-a-product/63639)

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**Author:** [@anairamy](https://discourse.nodered.org/u/anairamy)\
**Replies:** 2\
**Last updated:** [9 June 2022 14:34 UTC](https://discourse.nodered.org/t/expiration-date-of-a-product/63639 "2022-06-09T14:34:50Z")

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Hi everyone! Can anyone help me to create a function that apresents the expiration date of a product? I create this node about a product: "Farm" function: My goal is to create a notification when a product is ab…

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## [\[Error\] Timeout connecting to the transport](https://discourse.nodered.org/t/error-timeout-connecting-to-the-transport/63679)

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**Author:** [@HuOliveiraWork](https://discourse.nodered.org/u/HuOliveiraWork)\
**Replies:** 1\
**Last updated:** [9 June 2022 14:13 UTC](https://discourse.nodered.org/t/error-timeout-connecting-to-the-transport/63679 "2022-06-09T14:13:04Z")

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Hello everyone! I am having an error that is spamming my debugging tool. I have tried to find what this error might be, but to no avail. I have removed all the streams I am not using and all the plugins, still the same. …

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## [Problem with Perform Find using node-red-contrib-filemaker](https://discourse.nodered.org/t/problem-with-perform-find-using-node-red-contrib-filemaker/63672)

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**Author:** [@mebsn](https://discourse.nodered.org/u/mebsn)\
**Replies:** 8\
**Last updated:** [9 June 2022 13:24 UTC](https://discourse.nodered.org/t/problem-with-perform-find-using-node-red-contrib-filemaker/63672 "2022-06-09T13:24:14Z")

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hello guys, my problem is that perform find is congested in processing, when I try same flow with another account it pass, but with the specific one its always processing, any ideas what could be a problem?

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## [JSON string to object](https://discourse.nodered.org/t/json-string-to-object/63659)

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**Author:** [@FeliceM](https://discourse.nodered.org/u/FeliceM)\
**Replies:** 16\
**Last updated:** [9 June 2022 12:48 UTC](https://discourse.nodered.org/t/json-string-to-object/63659 "2022-06-09T12:48:28Z")

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I am trying to manage some data received from Sigfox backend. The body format I am using on the backend is like this: { "device" : "{device}", "time" : "{time}", "data" : "{data}", "seqNumber" : "{seqNumber}" } …

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## [Merge elements of objects to payload](https://discourse.nodered.org/t/merge-elements-of-objects-to-payload/63662)

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**Author:** [@cysoz](https://discourse.nodered.org/u/cysoz)\
**Replies:** 5\
**Last updated:** [9 June 2022 12:27 UTC](https://discourse.nodered.org/t/merge-elements-of-objects-to-payload/63662 "2022-06-09T12:27:57Z")

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Hello I have signals, I would like merge elements Obiect and Obiect 2... my function not work, Important for me is mergle to payload (tagName 1, value 1, timestamp 1, value 2) (tagName 1, value 1, timestamp 1, value…

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## [Http-in request header](https://discourse.nodered.org/t/http-in-request-header/63572)

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**Author:** [@mebsn](https://discourse.nodered.org/u/mebsn)\
**Replies:** 8\
**Last updated:** [9 June 2022 11:26 UTC](https://discourse.nodered.org/t/http-in-request-header/63572 "2022-06-09T11:26:39Z")

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I'm sending axios post request from client-side(browser)/postman to a node-red url, I am sending request with headers like this: " async GET\_SOURCINGDATA({ commit }) { try { const res = await axios.post(…

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## [Help with \`link call\` getting errors](https://discourse.nodered.org/t/help-with-link-call-getting-errors/63667)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 4\
**Last updated:** [9 June 2022 10:54 UTC](https://discourse.nodered.org/t/help-with-link-call-getting-errors/63667 "2022-06-09T10:54:58Z")

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I have a working example of how to do it and that works. I then applied this structure to a real flow and it threw a wobbly when a message went through. (I'm not sure how good this capture of the error is) {"message":…

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## [How to convert text files to PDF file](https://discourse.nodered.org/t/how-to-convert-text-files-to-pdf-file/63654)

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**Author:** [@chawana](https://discourse.nodered.org/u/chawana)\
**Replies:** 4\
**Last updated:** [9 June 2022 09:16 UTC](https://discourse.nodered.org/t/how-to-convert-text-files-to-pdf-file/63654 "2022-06-09T09:16:26Z")

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Anyone have sample flow to text files to PDF file

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## [Debugging a subflow](https://discourse.nodered.org/t/debugging-a-subflow/63647)

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**Author:** [@craigcurtin](https://discourse.nodered.org/u/craigcurtin)\
**Replies:** 2\
**Last updated:** [9 June 2022 05:06 UTC](https://discourse.nodered.org/t/debugging-a-subflow/63647 "2022-06-09T05:06:37Z")

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Guys, NR 2.2.2 I took a number of discrete nodes that were performing a function for me and that i thought were tried and proven - these included a couple of debug nodes that were set to output a status message (undern…

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## [How generate message on flow start based on default item in drop down list?](https://discourse.nodered.org/t/how-generate-message-on-flow-start-based-on-default-item-in-drop-down-list/63651)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 1\
**Last updated:** [9 June 2022 04:08 UTC](https://discourse.nodered.org/t/how-generate-message-on-flow-start-based-on-default-item-in-drop-down-list/63651 "2022-06-09T04:08:22Z")

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I am sure this has been asked before? How generate message on flow start based on default item in drop down list? If the preset is 2, and the flow starts, no message generated, if 1 or 3 selected, message generated as …

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## [TWO values at once into change node](https://discourse.nodered.org/t/two-values-at-once-into-change-node/63641)

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**Author:** [@P19CM](https://discourse.nodered.org/u/P19CM)\
**Replies:** 2\
**Last updated:** [9 June 2022 02:11 UTC](https://discourse.nodered.org/t/two-values-at-once-into-change-node/63641 "2022-06-09T02:11:12Z")

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I would like to insert two variables into the node - change longitude and latitude so that I can then generate an http request and I get the weather according to location, but if I give two at once then it does not work …

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## [How do I use my project (code) in Node RED?](https://discourse.nodered.org/t/how-do-i-use-my-project-code-in-node-red/63463)

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**Author:** [@wachcio](https://discourse.nodered.org/u/wachcio)\
**Replies:** 8\
**Last updated:** [8 June 2022 21:32 UTC](https://discourse.nodered.org/t/how-do-i-use-my-project-code-in-node-red/63463 "2022-06-08T21:32:05Z")

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I want to use Node RED to control the Tasmota device that will turn on the heater. In Poland, where I come from, electricity is cheaper at certain hours and days and I want to use it. I wrote a project in Typescript (Git…

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## [Proper placement & use of Delay node](https://discourse.nodered.org/t/proper-placement-use-of-delay-node/63616)

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**Author:** [@grant1](https://discourse.nodered.org/u/grant1)\
**Replies:** 2\
**Last updated:** [8 June 2022 19:08 UTC](https://discourse.nodered.org/t/proper-placement-use-of-delay-node/63616 "2022-06-08T19:08:49Z")

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I have a Modbus temp controller that I have set up to poll every 1 second and send the data to our MQTT broker. I would like to use this same Modbus node to send data to InfluxDB every 30 seconds. To do this, I set up …

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## [Sending emails from Node Red](https://discourse.nodered.org/t/sending-emails-from-node-red/63624)

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**Author:** [@chapeco6](https://discourse.nodered.org/u/chapeco6)\
**Replies:** 4\
**Last updated:** [8 June 2022 19:03 UTC](https://discourse.nodered.org/t/sending-emails-from-node-red/63624 "2022-06-08T19:03:30Z")

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Hi! Im trying to send an email from Node Red and it shows this error in the output. This is how I configured de Email node: I already watch some videos on youtube and did everything exactly the same as the video bu…

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## [How to have two dropdowns from a CSV to find the corresponding value](https://discourse.nodered.org/t/how-to-have-two-dropdowns-from-a-csv-to-find-the-corresponding-value/63628)

<div class="topic-metadata">

**Author:** [@prodriguesjr](https://discourse.nodered.org/u/prodriguesjr)\
**Replies:** 7\
**Last updated:** [8 June 2022 18:32 UTC](https://discourse.nodered.org/t/how-to-have-two-dropdowns-from-a-csv-to-find-the-corresponding-value/63628 "2022-06-08T18:32:23Z")

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Hello everyone I am fairly new to Node-RED and this is my first post on the forums! I found a similar problem, but it was a bit more simple and didn't work for my problem. I have two dropdowns that the user will select …

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## [Geofence and Worldmap nodes](https://discourse.nodered.org/t/geofence-and-worldmap-nodes/63618)

<div class="topic-metadata">

**Author:** [@chapeco6](https://discourse.nodered.org/u/chapeco6)\
**Replies:** 1\
**Last updated:** [8 June 2022 17:57 UTC](https://discourse.nodered.org/t/geofence-and-worldmap-nodes/63618 "2022-06-08T17:57:47Z")

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Hello, I have a geofence node and I wanna show it in the Worldmap node, but it doesnt show up. I already enable the option to show the output in the Worlmap node. And this is how I have the flow:

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## [Control Heater using node-red](https://discourse.nodered.org/t/control-heater-using-node-red/63604)

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**Author:** [@Lizzie](https://discourse.nodered.org/u/Lizzie)\
**Replies:** 1\
**Last updated:** [8 June 2022 14:18 UTC](https://discourse.nodered.org/t/control-heater-using-node-red/63604 "2022-06-08T14:18:56Z")

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Hello, I have a raspberry pi which is connected to a solid-state relay bricklet. the following code describes how I turn off and on the heater. Is it possible to implement this on node-red? I want to control the temperat…

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## ["Deploy" disabled after changes to node config using UI](https://discourse.nodered.org/t/deploy-disabled-after-changes-to-node-config-using-ui/63361)

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**Author:** [@fabiobeoni](https://discourse.nodered.org/u/fabiobeoni)\
**Replies:** 9\
**Last updated:** [8 June 2022 13:48 UTC](https://discourse.nodered.org/t/deploy-disabled-after-changes-to-node-config-using-ui/63361 "2022-06-08T13:48:13Z")

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Hello, I made a custom node with some config properties... When from the UI I change one value of the config and I press "Done", the Deploy button is not enabled. BTW my custom nodes receive the config values. Do I nee…

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## [String to number with decimals (but without separator)](https://discourse.nodered.org/t/string-to-number-with-decimals-but-without-separator/63178)

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**Author:** [@network\_potato](https://discourse.nodered.org/u/network_potato)\
**Replies:** 21\
**Last updated:** [8 June 2022 13:29 UTC](https://discourse.nodered.org/t/string-to-number-with-decimals-but-without-separator/63178 "2022-06-08T13:29:53Z")

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I have a string in my payload that looks like this: totalPaid: "268.00" I need to convert it to a number, and remove the dot (while keeping the two decimals) Like this: totalPaid: 26800 Another example: totalPaid: …

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## [Get list of flows with node detail](https://discourse.nodered.org/t/get-list-of-flows-with-node-detail/63567)

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**Author:** [@arminder.lubana](https://discourse.nodered.org/u/arminder.lubana)\
**Replies:** 4\
**Last updated:** [8 June 2022 13:15 UTC](https://discourse.nodered.org/t/get-list-of-flows-with-node-detail/63567 "2022-06-08T13:15:19Z")

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Hi team, we have one method in admin API is getFlows which return all the flows in json format but i want to get all the flows with nodes used in it in single request. Is it possible?

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## [Geofencing - Node Red, Owntracks](https://discourse.nodered.org/t/geofencing-node-red-owntracks/63592)

<div class="topic-metadata">

**Author:** [@chapeco6](https://discourse.nodered.org/u/chapeco6)\
**Replies:** 4\
**Last updated:** [8 June 2022 12:46 UTC](https://discourse.nodered.org/t/geofencing-node-red-owntracks/63592 "2022-06-08T12:46:13Z")

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Hey everyone, Im working on a project for school where I have to track when the user enters or leaves a certain area. Im using OwnTracks to get the coordinates to the broker and the node Geofence to get the valeu for "i…

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## [Modbus global configuration node server](https://discourse.nodered.org/t/modbus-global-configuration-node-server/63563)

<div class="topic-metadata">

**Author:** [@Aivaras1](https://discourse.nodered.org/u/Aivaras1)\
**Replies:** 5\
**Last updated:** [8 June 2022 11:28 UTC](https://discourse.nodered.org/t/modbus-global-configuration-node-server/63563 "2022-06-08T11:28:14Z")

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Hi, Can I change modbus server with a command ?

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## [Need help sending a payload array value to my controler](https://discourse.nodered.org/t/need-help-sending-a-payload-array-value-to-my-controler/63537)

<div class="topic-metadata">

**Author:** [@Xenos](https://discourse.nodered.org/u/Xenos)\
**Replies:** 3\
**Last updated:** [7 June 2022 22:18 UTC](https://discourse.nodered.org/t/need-help-sending-a-payload-array-value-to-my-controler/63537 "2022-06-07T22:18:04Z")

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I can get my value from the web, and I can send values to my controller. however I can fugure out how to get the web value to my controller. What i need to do is get my msg.payload\[20\] or string\[11\] ( 5.21 / MWH) …

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## [String to response code](https://discourse.nodered.org/t/string-to-response-code/63470)

<div class="topic-metadata">

**Author:** [@dmac101](https://discourse.nodered.org/u/dmac101)\
**Replies:** 7\
**Last updated:** [7 June 2022 22:10 UTC](https://discourse.nodered.org/t/string-to-response-code/63470 "2022-06-07T22:10:29Z")

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Hi All, I am working on a bit of a side project where I am trying to monitor the status of a radio, with the final goal of using it to log signal level against GPS location. The uses a proprietary serial protocol that s…

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## [Upload a file using OneDrive](https://discourse.nodered.org/t/upload-a-file-using-onedrive/63591)

<div class="topic-metadata">

**Author:** [@OscarF](https://discourse.nodered.org/u/OscarF)\
**Replies:** 0\
**Last updated:** [7 June 2022 21:47 UTC](https://discourse.nodered.org/t/upload-a-file-using-onedrive/63591 "2022-06-07T21:47:22Z")

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Hi! I'm using a node to upload a file using OneDrive, I'm using the nodes by node-red-contrib-onedrive. When I'm uploading the file, in OneDrive I can see it but it is blank. Do you ever do it before? can you give me so…

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## [NR subscribe and then republish MQTT](https://discourse.nodered.org/t/nr-subscribe-and-then-republish-mqtt/63552)

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**Author:** [@droidblast](https://discourse.nodered.org/u/droidblast)\
**Replies:** 5\
**Last updated:** [7 June 2022 20:31 UTC](https://discourse.nodered.org/t/nr-subscribe-and-then-republish-mqtt/63552 "2022-06-07T20:31:49Z")

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Is it bad or incorrect to use a public MQTT in this case HiveMQ to a local MQTT? I am subscribing to a external SIM7600 ESP that sends data via 4G to HiveMQ (public 1883) then using NR to read this MQTT and resend to a …

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## [Server ui workspace is blank](https://discourse.nodered.org/t/server-ui-workspace-is-blank/63583)

<div class="topic-metadata">

**Author:** [@ire\_14r](https://discourse.nodered.org/u/ire_14r)\
**Replies:** 3\
**Last updated:** [7 June 2022 20:15 UTC](https://discourse.nodered.org/t/server-ui-workspace-is-blank/63583 "2022-06-07T20:15:48Z")

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Hello, I reopened a simple projet I have been working on, and the server workspace is blank, not loading. I have reinstalled node-red and node.js, and cannot find where the problem comes from, it was working just fine l…

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## [Show satellite map? (Central Europe - pizza delivery)](https://discourse.nodered.org/t/show-satellite-map-central-europe-pizza-delivery/63585)

<div class="topic-metadata">

**Author:** [@PizzaProgram](https://discourse.nodered.org/u/PizzaProgram)\
**Replies:** 3\
**Last updated:** [7 June 2022 19:33 UTC](https://discourse.nodered.org/t/show-satellite-map-central-europe-pizza-delivery/63585 "2022-06-07T19:33:23Z")

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Maybe this is a bit off-topic, sorry for that. I would like to show positions of the pizza-delivery boys (cars) on an OpenStreetMap, but doing it with satellite pictures. (I don't like "ggl.map" pricing.) (It seems muc…

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## [Pi, Level shifter, ADS1115, MPX differential sensor wiring questions](https://discourse.nodered.org/t/pi-level-shifter-ads1115-mpx-differential-sensor-wiring-questions/63427)

<div class="topic-metadata">

**Author:** [@WBr](https://discourse.nodered.org/u/WBr)\
**Replies:** 31\
**Last updated:** [7 June 2022 19:13 UTC](https://discourse.nodered.org/t/pi-level-shifter-ads1115-mpx-differential-sensor-wiring-questions/63427 "2022-06-07T19:13:01Z")

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I have a question about reading data from a 5V sensor. I am using a MPX53DP (ADS1115 and levelshifter) I got told that this analog signal needs to be digital and lover than 5V so Pi can handle it. The way I did the…

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