# Latest

**URL:** https://discourse.nodered.org/latest.md?page=670

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

**Page:** 671

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## [Node-red will not start anymore](https://discourse.nodered.org/t/node-red-will-not-start-anymore/7825)

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**Author:** [@edje11](https://discourse.nodered.org/u/edje11)\
**Replies:** 8\
**Last updated:** [20 December 2021 10:03 UTC](https://discourse.nodered.org/t/node-red-will-not-start-anymore/7825 "2021-12-20T10:03:21Z")

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Node-red v0.18.7 was working fine until this morning, however now it will not start anymore. Running it on my raspberry 3B+ with Node-red start will give this error: 11 Feb 11:49:54 - \[info\] Starting flows 11 Feb 11:49…

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## [Multiple catch nodes](https://discourse.nodered.org/t/multiple-catch-nodes/55437)

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**Author:** [@Mamonetti](https://discourse.nodered.org/u/Mamonetti)\
**Replies:** 4\
**Last updated:** [20 December 2021 09:58 UTC](https://discourse.nodered.org/t/multiple-catch-nodes/55437 "2021-12-20T09:58:23Z")

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I have a flow similar to the attached one where I want to keep an infinite loop doing some stuff related to HTTP requests. It's important to notice that there's just one inject operation at start. What happens if you…

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## [Update from v0.20.07](https://discourse.nodered.org/t/update-from-v0-20-07/55381)

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**Author:** [@foskolo](https://discourse.nodered.org/u/foskolo)\
**Replies:** 5\
**Last updated:** [20 December 2021 08:20 UTC](https://discourse.nodered.org/t/update-from-v0-20-07/55381 "2021-12-20T08:20:14Z")

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Hi, I use a very old version of nodered (v0.20.07). I have many tabs and nodes for my smart home and everything works fine. Now I would like to update to the newest version. How can I do this without to loose all my no…

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## [I want to connect at Informix DB. Is there any idea?](https://discourse.nodered.org/t/i-want-to-connect-at-informix-db-is-there-any-idea/55329)

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**Author:** [@Dumy](https://discourse.nodered.org/u/Dumy)\
**Replies:** 1\
**Last updated:** [20 December 2021 06:57 UTC](https://discourse.nodered.org/t/i-want-to-connect-at-informix-db-is-there-any-idea/55329 "2021-12-20T06:57:08Z")

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Node-red is installed on a windows server 2012. How can I connect to the Informix database? I did not find any available node or ODBC with windows. Can I do this by function?

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## [Apply transformation on nested object fields (based on dot notation)](https://discourse.nodered.org/t/apply-transformation-on-nested-object-fields-based-on-dot-notation/53906)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 9\
**Last updated:** [20 December 2021 06:17 UTC](https://discourse.nodered.org/t/apply-transformation-on-nested-object-fields-based-on-dot-notation/53906 "2021-12-20T06:17:42Z")

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Hi folks, I am searching for a way to transform easily nested object properties, for one of my new nodes. For example the input message of my node could be like this: { "payload": \[ { "someProperty": "A",…

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## [Extract SQL data from database](https://discourse.nodered.org/t/extract-sql-data-from-database/18091)

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**Author:** [@foerstl](https://discourse.nodered.org/u/foerstl)\
**Replies:** 9\
**Last updated:** [20 December 2021 05:59 UTC](https://discourse.nodered.org/t/extract-sql-data-from-database/18091 "2021-12-20T05:59:13Z")

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Hello, I have a Maria DB installed on my IoT2020 and I'm writing data on to it via this flow: Everything works fine so far but now I want to display the table on the dashboard but I have no idea how to use the output …

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## [Function to report temp below zero, but suppress until temp rises above zero](https://discourse.nodered.org/t/function-to-report-temp-below-zero-but-suppress-until-temp-rises-above-zero/55416)

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**Author:** [@cloudgenki](https://discourse.nodered.org/u/cloudgenki)\
**Replies:** 4\
**Last updated:** [19 December 2021 22:35 UTC](https://discourse.nodered.org/t/function-to-report-temp-below-zero-but-suppress-until-temp-rises-above-zero/55416 "2021-12-19T22:35:02Z")

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Hi Guys, I've written a function to email me when a temperature value is below zero. The problem is that I want to suppress further emails, until the temperature rise above zero. Can anyone point me in the right direc…

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## [Enabling / disabling writing data to a file using a dashboard switch node](https://discourse.nodered.org/t/enabling-disabling-writing-data-to-a-file-using-a-dashboard-switch-node/55438)

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**Author:** [@nosered1966](https://discourse.nodered.org/u/nosered1966)\
**Replies:** 23\
**Last updated:** [19 December 2021 21:57 UTC](https://discourse.nodered.org/t/enabling-disabling-writing-data-to-a-file-using-a-dashboard-switch-node/55438 "2021-12-19T21:57:03Z")

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Dear Experts, I have created a flow where I can store data into a file and it already works as expected. But now I want to enable / disable the logging using a simple switch (may be by blocking the entire message?) on …

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## [How to set my iot interface module correcly with http node type?](https://discourse.nodered.org/t/how-to-set-my-iot-interface-module-correcly-with-http-node-type/55434)

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**Author:** [@corso66](https://discourse.nodered.org/u/corso66)\
**Replies:** 2\
**Last updated:** [19 December 2021 18:40 UTC](https://discourse.nodered.org/t/how-to-set-my-iot-interface-module-correcly-with-http-node-type/55434 "2021-12-19T18:40:43Z")

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Hi, I'm trying to make connection beteen my IOT and node red using http endpoint. During one year, i'm designing my electronic card with TCP protocol with succes (IOT TCP client, NR server), but i want to test http adv…

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## [How to get a webpage, then submit a form using a POST request](https://discourse.nodered.org/t/how-to-get-a-webpage-then-submit-a-form-using-a-post-request/54754)

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**Author:** [@ThibautRuy](https://discourse.nodered.org/u/ThibautRuy)\
**Replies:** 6\
**Last updated:** [19 December 2021 16:57 UTC](https://discourse.nodered.org/t/how-to-get-a-webpage-then-submit-a-form-using-a-post-request/54754 "2021-12-19T16:57:47Z")

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Hello, Here is my scenario: I need to submit a form from an external webpage (POST) and then scrape the output page... on the first page, there is a \<form action="/" method="post" id="search\_form"\> with different option…

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## [NR runs, but not](https://discourse.nodered.org/t/nr-runs-but-not/55393)

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**Author:** [@StrongTown](https://discourse.nodered.org/u/StrongTown)\
**Replies:** 29\
**Last updated:** [19 December 2021 16:56 UTC](https://discourse.nodered.org/t/nr-runs-but-not/55393 "2021-12-19T16:56:53Z")

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No idea what I've done however when I use node-red-start I get the response below. Neither the editor nor dashboard are available. Also, node-red --safe seems to do nothing, I just get my CLI prompt back. Start Node-…

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## [Image on dashboard](https://discourse.nodered.org/t/image-on-dashboard/55399)

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**Author:** [@bmneves](https://discourse.nodered.org/u/bmneves)\
**Replies:** 27\
**Last updated:** [19 December 2021 16:37 UTC](https://discourse.nodered.org/t/image-on-dashboard/55399 "2021-12-19T16:37:45Z")

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Hello. I'm trying to show my image logo on the dashboard. It works on my local network, but not online. I'm using node-red-contrib-ui-media do display the image and i'm using ngrok to access my dashboard online. When…

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## [Function Node programming - get key name of object property](https://discourse.nodered.org/t/function-node-programming-get-key-name-of-object-property/55435)

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**Author:** [@Sui.cide](https://discourse.nodered.org/u/Sui.cide)\
**Replies:** 6\
**Last updated:** [19 December 2021 15:57 UTC](https://discourse.nodered.org/t/function-node-programming-get-key-name-of-object-property/55435 "2021-12-19T15:57:16Z")

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hello i have a problem with programming. When i have an array like this: {"aaa":{"bbb":"ccc", "ddd";"eee"}, "fff":{"ggg";"hhh", "iii";"jjjj"} } i had converted this with json parse to the string. …

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## [Edit CSV files in a flow?](https://discourse.nodered.org/t/edit-csv-files-in-a-flow/55392)

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**Author:** [@bbartling](https://discourse.nodered.org/u/bbartling)\
**Replies:** 8\
**Last updated:** [19 December 2021 15:35 UTC](https://discourse.nodered.org/t/edit-csv-files-in-a-flow/55392 "2021-12-19T15:35:38Z")

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Is it possible to edit CSV files in a node red flow? Or browser somehow? I am interacting with another building automation type platform with Node Red and for each device on this separate platform there is a CSV file co…

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## [Split msg.payload "P-131" to Letters and Numbers](https://discourse.nodered.org/t/split-msg-payload-p-131-to-letters-and-numbers/55429)

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**Author:** [@olby2](https://discourse.nodered.org/u/olby2)\
**Replies:** 4\
**Last updated:** [19 December 2021 14:13 UTC](https://discourse.nodered.org/t/split-msg-payload-p-131-to-letters-and-numbers/55429 "2021-12-19T14:13:06Z")

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Hello Forum, i want to process Data from a external Device and the Data looks like "P-131\_SPO=-200W" i want to process the Filed "P-131\_SPO" -\> -131 and The Value "-200W" -\> -200 (W) split at "=" and "\_" wo…

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## [Need USB PC input device](https://discourse.nodered.org/t/need-usb-pc-input-device/55426)

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**Author:** [@deanm](https://discourse.nodered.org/u/deanm)\
**Replies:** 1\
**Last updated:** [19 December 2021 13:46 UTC](https://discourse.nodered.org/t/need-usb-pc-input-device/55426 "2021-12-19T13:46:32Z")

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Looking for something that i can plug into server USB for dry contact input so NodeRed can control. I know that a RPi can be used, but I'm looking for something more robust 24/7

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## [Failed to install](https://discourse.nodered.org/t/failed-to-install/55364)

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**Author:** [@Elpee](https://discourse.nodered.org/u/Elpee)\
**Replies:** 5\
**Last updated:** [19 December 2021 13:05 UTC](https://discourse.nodered.org/t/failed-to-install/55364 "2021-12-19T13:05:49Z")

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Hey there, Sinds this week I Installed Node Red to use it for an experiment. So I want to installe a Palette: 'smart Nora' but I always get the following error: 2021-12-17T20:43:12.532Z npm.cmd install --no-audit --n…

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## [Ui-switch node and e-mail](https://discourse.nodered.org/t/ui-switch-node-and-e-mail/55390)

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**Author:** [@gytomig2](https://discourse.nodered.org/u/gytomig2)\
**Replies:** 4\
**Last updated:** [19 December 2021 13:04 UTC](https://discourse.nodered.org/t/ui-switch-node-and-e-mail/55390 "2021-12-19T13:04:03Z")

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Hello, I'm using (v1.3.5) of system. I have built a room temprature indicator. I would to use e-mail notification according to the switch is on. The e-mail sending is working correctly. I just can't create the switch…

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## [Storing float from MQTT \> Influx](https://discourse.nodered.org/t/storing-float-from-mqtt-influx/55388)

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**Author:** [@mynoderocks](https://discourse.nodered.org/u/mynoderocks)\
**Replies:** 4\
**Last updated:** [19 December 2021 11:48 UTC](https://discourse.nodered.org/t/storing-float-from-mqtt-influx/55388 "2021-12-19T11:48:26Z")

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Hi all, I have a MQTT topic that seems to be storing a float as a string. Example: It is a reading from a electricity consumption monitor and stores 33.2 or 45.3 in MQTT as a string. I have no control of how its doing …

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## [Writing 16bit/32 bit Signed Integers to Modbus TCP server on NodeRed](https://discourse.nodered.org/t/writing-16bit-32-bit-signed-integers-to-modbus-tcp-server-on-nodered/55370)

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**Author:** [@kkshe001](https://discourse.nodered.org/u/kkshe001)\
**Replies:** 2\
**Last updated:** [19 December 2021 11:08 UTC](https://discourse.nodered.org/t/writing-16bit-32-bit-signed-integers-to-modbus-tcp-server-on-nodered/55370 "2021-12-19T11:08:54Z")

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Hi, I am reading 16 & 32 bit Signed Integers from Modbus RTU registers and trying to write this back to Modbus TCP Server. Basically I am using node-red to convert Modbus RTU read data to Modbus TCP data so that an exte…

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## [GPIOs not working](https://discourse.nodered.org/t/gpios-not-working/55408)

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**Author:** [@relus](https://discourse.nodered.org/u/relus)\
**Replies:** 2\
**Last updated:** [19 December 2021 10:35 UTC](https://discourse.nodered.org/t/gpios-not-working/55408 "2021-12-19T10:35:16Z")

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Good evening everyone, I have a problem with the GPIO control via Node-RED. Who could help me please? Hardware: Raspberry Pi zero WH Software: "Raspberry Pi OS with desktop and recommended software" (kernel version 5.…

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## [If number increases or decreases](https://discourse.nodered.org/t/if-number-increases-or-decreases/55420)

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**Author:** [@bigmac5753](https://discourse.nodered.org/u/bigmac5753)\
**Replies:** 2\
**Last updated:** [19 December 2021 10:09 UTC](https://discourse.nodered.org/t/if-number-increases-or-decreases/55420 "2021-12-19T10:09:55Z")

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I have a flow that outputs a number that periodically changes. I want a node that states whether the number increased or decreased. ideally, I want a node that either: a) outputs a msg stating the number either increa…

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## [Add topic field to File-In node](https://discourse.nodered.org/t/add-topic-field-to-file-in-node/55376)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 9\
**Last updated:** [19 December 2021 00:40 UTC](https://discourse.nodered.org/t/add-topic-field-to-file-in-node/55376 "2021-12-19T00:40:59Z")

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Hi folks, One of the things I need is an easy way to combine two files into a single message. Since the Join-node already allows me to combine messages based on their topic, it would be very useful for me if the File-I…

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## [Serial-in in Debian](https://discourse.nodered.org/t/serial-in-in-debian/55366)

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**Author:** [@nygma2004](https://discourse.nodered.org/u/nygma2004)\
**Replies:** 6\
**Last updated:** [18 December 2021 20:14 UTC](https://discourse.nodered.org/t/serial-in-in-debian/55366 "2021-12-18T20:14:59Z")

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I am migrating my Node-Red flows from an older 1.x Node-Red that was running in a rPi, to the current version running in a PC with Debian. I am using RFLink 443Mhz receiver board which is connected over USB. My flow ha…

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## [Just Not Working](https://discourse.nodered.org/t/just-not-working/55327)

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**Author:** [@indedark](https://discourse.nodered.org/u/indedark)\
**Replies:** 3\
**Last updated:** [18 December 2021 19:19 UTC](https://discourse.nodered.org/t/just-not-working/55327 "2021-12-18T19:19:37Z")

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Have the following code in a function node. Function node fed by a join node that's fed with a Drop Down select and a table. I'm looking for table values that are undefined or null so that I can use a previously entere…

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## [Two line chart from HTTP request](https://discourse.nodered.org/t/two-line-chart-from-http-request/55344)

<div class="topic-metadata">

**Author:** [@bbartling](https://discourse.nodered.org/u/bbartling)\
**Replies:** 9\
**Last updated:** [18 December 2021 17:48 UTC](https://discourse.nodered.org/t/two-line-chart-from-http-request/55344 "2021-12-18T17:48:06Z")

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I'm trying to create a two line chart this tutorial. My flow looks like this: The response from the rest API is this: {"201201/tempUoTwoBalco": {"value": 62.98999786376953, "route": "/vui/platforms/benshome/devices…

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## [1 Computer, 2 Monitors, 1 Static Dashboard, 4 Rotating Dashboards](https://discourse.nodered.org/t/1-computer-2-monitors-1-static-dashboard-4-rotating-dashboards/54784)

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**Author:** [@aa0z](https://discourse.nodered.org/u/aa0z)\
**Replies:** 16\
**Last updated:** [18 December 2021 16:53 UTC](https://discourse.nodered.org/t/1-computer-2-monitors-1-static-dashboard-4-rotating-dashboards/54784 "2021-12-18T16:53:02Z")

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I saw a previous post on how to rotate screens with a control ui, which is great, but I'm looking at doing the following. I have 1 PC feeding two monitors. I have one main Node Red tab called Dashboard that is my main …

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## [Node Red if else functionality](https://discourse.nodered.org/t/node-red-if-else-functionality/55386)

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**Author:** [@Sebas\_t](https://discourse.nodered.org/u/Sebas_t)\
**Replies:** 3\
**Last updated:** [18 December 2021 14:18 UTC](https://discourse.nodered.org/t/node-red-if-else-functionality/55386 "2021-12-18T14:18:59Z")

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Hi, I'm building an IoT MQTT platform with node red and a mysql database. My MQTT connection is working fine as well as the database connections. However I need to store a connected device ID in my device tabel. Ever…

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## [Issue getting serial data into Node-RED](https://discourse.nodered.org/t/issue-getting-serial-data-into-node-red/55326)

<div class="topic-metadata">

**Author:** [@CerealPort](https://discourse.nodered.org/u/CerealPort)\
**Replies:** 3\
**Last updated:** [18 December 2021 10:55 UTC](https://discourse.nodered.org/t/issue-getting-serial-data-into-node-red/55326 "2021-12-18T10:55:40Z")

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Hi all. I'm trying to read some serial data from an environmental data logger. This is the raw serial data it exports as read from my Mac using SerialTools: Simply parsed, it is 43290000000945 (945 parts per milli…

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## [NR Restarting on form fill (Rpi 3b)](https://discourse.nodered.org/t/nr-restarting-on-form-fill-rpi-3b/55275)

<div class="topic-metadata">

**Author:** [@Jay1234](https://discourse.nodered.org/u/Jay1234)\
**Replies:** 18\
**Last updated:** [18 December 2021 10:48 UTC](https://discourse.nodered.org/t/nr-restarting-on-form-fill-rpi-3b/55275 "2021-12-18T10:48:48Z")

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I'm running a flow on an RPi 3b and am experiencing an issue where NR restarts whenever a form on the dash is filled in. Below is the log from around the time it happens. Looks like i'm missing something important? Could…

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