# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=569

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

**Page:** 570

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## [MQTT, Complete and Catch questions](https://discourse.nodered.org/t/mqtt-complete-and-catch-questions/44312)

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**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 2\
**Last updated:** [17 April 2021 14:39 UTC](https://discourse.nodered.org/t/mqtt-complete-and-catch-questions/44312 "2021-04-17T14:39:28Z")

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I see that the MQTT Out node correctly generates an event that can be caught by a Complete node when it has sent the message to the broker, but it does not appear to generate an error that the Catch node can catch if I s…

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## [Node-red-contrib-telegrambot get last message](https://discourse.nodered.org/t/node-red-contrib-telegrambot-get-last-message/44316)

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**Author:** [@Hunter](https://discourse.nodered.org/u/Hunter)\
**Replies:** 3\
**Last updated:** [17 April 2021 14:33 UTC](https://discourse.nodered.org/t/node-red-contrib-telegrambot-get-last-message/44316 "2021-04-17T14:33:16Z")

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Hello all, Does this Telegram BOT allow to retrieve last message content, knowing the last message ID?

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## [Sub Pub loop... :\<](https://discourse.nodered.org/t/sub-pub-loop/44281)

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**Author:** [@ThisGuiii](https://discourse.nodered.org/u/ThisGuiii)\
**Replies:** 4\
**Last updated:** [17 April 2021 12:40 UTC](https://discourse.nodered.org/t/sub-pub-loop/44281 "2021-04-17T12:40:48Z")

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Hello, I am fairly new to Node-RED and have been stuck on this one issue going into week two here.. I have an ESP8266 controlling a relay and a touch switch that also controls the relay. Simple as this seems, when I tog…

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## [Node-red-contrib-azure-iot-device & Direct Methods](https://discourse.nodered.org/t/node-red-contrib-azure-iot-device-direct-methods/43783)

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**Author:** [@mgkeekrog](https://discourse.nodered.org/u/mgkeekrog)\
**Replies:** 13\
**Last updated:** [17 April 2021 12:10 UTC](https://discourse.nodered.org/t/node-red-contrib-azure-iot-device-direct-methods/43783 "2021-04-17T12:10:44Z")

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Hello, I'm very new to Node Red and JSON so bear with me. I'm using the "Device" node from the subject palette and found the Direct Method feature perfect for my IoT application. What I want to do is use a cloud hosted S…

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## [HTTP error: status code 404, net::ERR\_HTTP\_RESPONSE\_CODE\_FAILURE](https://discourse.nodered.org/t/http-error-status-code-404-net-err-http-response-code-failure/41569)

<div class="topic-metadata">

**Author:** [@smithy](https://discourse.nodered.org/u/smithy)\
**Replies:** 17\
**Last updated:** [17 April 2021 09:55 UTC](https://discourse.nodered.org/t/http-error-status-code-404-net-err-http-response-code-failure/41569 "2021-04-17T09:55:32Z")

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HI I have been developing an app on my RPi4 no problem at home office, all good. Twice now, when I deploy the Pi physically to site, the nodes fail to load up. At first I thought it maybe a Node.js version problem from …

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## ["Lost connection to WS Server!" using Revolution Pi Nodes](https://discourse.nodered.org/t/lost-connection-to-ws-server-using-revolution-pi-nodes/44310)

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**Author:** [@crismancich](https://discourse.nodered.org/u/crismancich)\
**Replies:** 0\
**Last updated:** [17 April 2021 07:04 UTC](https://discourse.nodered.org/t/lost-connection-to-ws-server-using-revolution-pi-nodes/44310 "2021-04-17T07:04:46Z")

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I saw that here in the forum someone had the same problem a time ago. This only applies to the Revolution Pi with RevPi Nodes. As we also had the problem, I will post the solution we found for reference. Solution : We u…

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## [Formula for read int64 on schenider iem3255](https://discourse.nodered.org/t/formula-for-read-int64-on-schenider-iem3255/44307)

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**Author:** [@ariesset1888](https://discourse.nodered.org/u/ariesset1888)\
**Replies:** 0\
**Last updated:** [17 April 2021 05:04 UTC](https://discourse.nodered.org/t/formula-for-read-int64-on-schenider-iem3255/44307 "2021-04-17T05:04:40Z")

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Hi Guys, i want to ask for help to solve my problem, I am new on node red, I have a task to read the iem3255 kwh meter data from my company, I have been able to read the data for the voltage, phase current, but I have…

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## [Difficulty with allowing both HTTP and HTTPS](https://discourse.nodered.org/t/difficulty-with-allowing-both-http-and-https/44296)

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**Author:** [@mdkrieg](https://discourse.nodered.org/u/mdkrieg)\
**Replies:** 5\
**Last updated:** [17 April 2021 04:32 UTC](https://discourse.nodered.org/t/difficulty-with-allowing-both-http-and-https/44296 "2021-04-17T04:32:09Z")

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I have a site that's serving PHP with Apache and it retrieves data from my node-RED application. I originally was using file\_get\_contents() to fetch data from node-RED's HTTP endpoints but I don't think this is ideal. Mo…

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## [Change the login mask logo not working now](https://discourse.nodered.org/t/change-the-login-mask-logo-not-working-now/44295)

<div class="topic-metadata">

**Author:** [@justjoe96](https://discourse.nodered.org/u/justjoe96)\
**Replies:** 2\
**Last updated:** [16 April 2021 20:35 UTC](https://discourse.nodered.org/t/change-the-login-mask-logo-not-working-now/44295 "2021-04-16T20:35:32Z")

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Hello everyone. I followed the post here: Change the login mask logo That post was closed so I started a new one, sorry if that isn't correct. No matter what I seem to do, the login mask logo doesn't change and stays …

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## [Connection lost with external connections](https://discourse.nodered.org/t/connection-lost-with-external-connections/44289)

<div class="topic-metadata">

**Author:** [@Terralytics](https://discourse.nodered.org/u/Terralytics)\
**Replies:** 2\
**Last updated:** [16 April 2021 17:22 UTC](https://discourse.nodered.org/t/connection-lost-with-external-connections/44289 "2021-04-16T17:22:48Z")

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I have NodeRed running with Docker (running on Windows, using Linux containers). When connecting to NodeRed with localhost:1880 everything works fine. NodeRed is connected to the www with Apache as webserver (running on …

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## [How to add external URL in settings.js file](https://discourse.nodered.org/t/how-to-add-external-url-in-settings-js-file/44285)

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**Author:** [@Syedabd](https://discourse.nodered.org/u/Syedabd)\
**Replies:** 4\
**Last updated:** [16 April 2021 16:52 UTC](https://discourse.nodered.org/t/how-to-add-external-url-in-settings-js-file/44285 "2021-04-16T16:52:29Z")

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Hi, Can anyone help me out with how to include an external URL for CSS in editorTheme in setttings.js file Currently, I'm using an absolute path to customize theme How to include external/remote URL in settings.

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## [MicroPi does not record audio](https://discourse.nodered.org/t/micropi-does-not-record-audio/43234)

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**Author:** [@IWI](https://discourse.nodered.org/u/IWI)\
**Replies:** 9\
**Last updated:** [16 April 2021 13:37 UTC](https://discourse.nodered.org/t/micropi-does-not-record-audio/43234 "2021-04-16T13:37:03Z")

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Hi Node Red Community, i want to record audio using the MicroPi, because i need the raw data, with an USB mic. The problem i have is that the files that are being saved are just empty shells with no contend. I tried d…

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## [Node-red-contrib-fcm-receive-node](https://discourse.nodered.org/t/node-red-contrib-fcm-receive-node/44282)

<div class="topic-metadata">

**Author:** [@rogerdodger](https://discourse.nodered.org/u/rogerdodger)\
**Replies:** 0\
**Last updated:** [16 April 2021 12:44 UTC](https://discourse.nodered.org/t/node-red-contrib-fcm-receive-node/44282 "2021-04-16T12:44:42Z")

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New to node-red so this probably has an obvious solution. Puzzled as to how to use this node. Documentation seems thin. Some years ago I wrote an app to receive and speak fcm messages. Since I have lost my code I thou…

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## [Can't update modules: npm ERR! Cannot read property 'extraneous' of undefined](https://discourse.nodered.org/t/cant-update-modules-npm-err-cannot-read-property-extraneous-of-undefined/43962)

<div class="topic-metadata">

**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\
**Replies:** 28\
**Last updated:** [16 April 2021 08:58 UTC](https://discourse.nodered.org/t/cant-update-modules-npm-err-cannot-read-property-extraneous-of-undefined/43962 "2021-04-16T08:58:32Z")

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Hi, I got this error under Windows installation, I've google it but there is no certain way to solve it. Somebody say to remove the package "lock" (I did), someone else to remove the bin folder, others to remove complete…

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## [Node-red v132 gives problems](https://discourse.nodered.org/t/node-red-v132-gives-problems/44246)

<div class="topic-metadata">

**Author:** [@pvklink](https://discourse.nodered.org/u/pvklink)\
**Replies:** 4\
**Last updated:** [15 April 2021 20:53 UTC](https://discourse.nodered.org/t/node-red-v132-gives-problems/44246 "2021-04-15T20:53:23Z")

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I installed per accident an update of node-red v132. I hit a node-red update flow. Is there a easy way back to 1.28 or 1.29 or can i (we :slight\_smile: solve below problems ? After update two things doent work all m…

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## [Serial COM port with Windows](https://discourse.nodered.org/t/serial-com-port-with-windows/44180)

<div class="topic-metadata">

**Author:** [@sathishkumarc14](https://discourse.nodered.org/u/sathishkumarc14)\
**Replies:** 5\
**Last updated:** [15 April 2021 18:48 UTC](https://discourse.nodered.org/t/serial-com-port-with-windows/44180 "2021-04-15T18:48:04Z")

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Hi, We are using Serial COM port to get a data from serial device (load cell). Using "serial" node we are getting data. In random scenario "serial" node getting timed out. And getting empty string. After resetting the s…

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## [Tcp in node only triggers on disconnect](https://discourse.nodered.org/t/tcp-in-node-only-triggers-on-disconnect/44243)

<div class="topic-metadata">

**Author:** [@hobbes1069](https://discourse.nodered.org/u/hobbes1069)\
**Replies:** 2\
**Last updated:** [15 April 2021 17:40 UTC](https://discourse.nodered.org/t/tcp-in-node-only-triggers-on-disconnect/44243 "2021-04-15T17:40:08Z")

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I have the following TCPI IN node: \[{"id":"2bf9b89c.dd2018","type":"tcp in","z":"9f6c165f.c01738","name":"Input from Tulip","server":"server","host":"","port":"1915","datamode":"single","datatype":"utf8","newline":"","t…

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## [Export InfluxDB to .CSV](https://discourse.nodered.org/t/export-influxdb-to-csv/44152)

<div class="topic-metadata">

**Author:** [@TimTist](https://discourse.nodered.org/u/TimTist)\
**Replies:** 20\
**Last updated:** [15 April 2021 15:12 UTC](https://discourse.nodered.org/t/export-influxdb-to-csv/44152 "2021-04-15T15:12:59Z")

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Although my question is a bit off topic for this forum, I hope someone can help me anyway. I have asked this question on the official InfluxDB community, but that is or seems little active. My intention is to write data…

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## [Http request node requestTimeout](https://discourse.nodered.org/t/http-request-node-requesttimeout/44231)

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**Author:** [@mored](https://discourse.nodered.org/u/mored)\
**Replies:** 2\
**Last updated:** [15 April 2021 14:27 UTC](https://discourse.nodered.org/t/http-request-node-requesttimeout/44231 "2021-04-15T14:27:05Z")

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I've got a http request that can take longer than the default timeout and I'd rather not change the default for the other nodes. I've tried setting msg.requestTimeout as per the documentation to a larger number but doesn…

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## [Parse JSON object](https://discourse.nodered.org/t/parse-json-object/44217)

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**Author:** [@edwardradical](https://discourse.nodered.org/u/edwardradical)\
**Replies:** 13\
**Last updated:** [15 April 2021 13:21 UTC](https://discourse.nodered.org/t/parse-json-object/44217 "2021-04-15T13:21:33Z")

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Hi guys, I'm not sure if this is the right place to ask this question but I have a JSON document like this: {"Info":{"Battery":0,"ID":1,"Latitudine":"45.47","Longitudine":"9.19"},"Data":\[\[{"AcX":16688,"AcY":104,"AcZ":20…

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## [Seeing context variabkles in alphabetical order](https://discourse.nodered.org/t/seeing-context-variabkles-in-alphabetical-order/44230)

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**Author:** [@Botched1](https://discourse.nodered.org/u/Botched1)\
**Replies:** 1\
**Last updated:** [15 April 2021 12:33 UTC](https://discourse.nodered.org/t/seeing-context-variabkles-in-alphabetical-order/44230 "2021-04-15T12:33:44Z")

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I use a lot of context variables, and sometimes have a really hard time finding them in the variable list (see below). Is there any way to see the variable list in alphabetical order (even if it were a manual step like …

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## [Keyboard Input in nodered](https://discourse.nodered.org/t/keyboard-input-in-nodered/44209)

<div class="topic-metadata">

**Author:** [@Henjoe](https://discourse.nodered.org/u/Henjoe)\
**Replies:** 5\
**Last updated:** [15 April 2021 12:21 UTC](https://discourse.nodered.org/t/keyboard-input-in-nodered/44209 "2021-04-15T12:21:43Z")

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Hi I have a raspberry PI with 2 barcode scanners attached to it. As we all know, barcode scanners just emulates the Keyboard signal. I want to know whether the input signal is coming from barcode #1 or barcode #2 in node…

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## [Accumulates data in a variable](https://discourse.nodered.org/t/accumulates-data-in-a-variable/44157)

<div class="topic-metadata">

**Author:** [@Khaledpro](https://discourse.nodered.org/u/Khaledpro)\
**Replies:** 29\
**Last updated:** [15 April 2021 11:03 UTC](https://discourse.nodered.org/t/accumulates-data-in-a-variable/44157 "2021-04-15T11:03:22Z")

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hello everyone , i want ask if you have any idea about accumulates data in a variable i have this flow to accumulate the downtime but the result is NaN have a nice day ... \[{"id":"760419e7.c6a2d8","type":"inject","z…

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## [NodeRED Docker documentation](https://discourse.nodered.org/t/nodered-docker-documentation/44216)

<div class="topic-metadata">

**Author:** [@Kib](https://discourse.nodered.org/u/Kib)\
**Replies:** 1\
**Last updated:** [15 April 2021 10:27 UTC](https://discourse.nodered.org/t/nodered-docker-documentation/44216 "2021-04-15T10:27:04Z")

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Docker page i am referring to : Running under Docker : Node-RED Hello, in the section "Dockerfile which copies in local resources" the following docker file is mentioned FROM nodered/node-red # Copy package.json to th…

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## [MQTT host server discovery](https://discourse.nodered.org/t/mqtt-host-server-discovery/44222)

<div class="topic-metadata">

**Author:** [@Louis\_Swart](https://discourse.nodered.org/u/Louis_Swart)\
**Replies:** 2\
**Last updated:** [15 April 2021 10:07 UTC](https://discourse.nodered.org/t/mqtt-host-server-discovery/44222 "2021-04-15T10:07:23Z")

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Hi, I have a question regarding MQTT host server discovery from a Tasmota SONOFF device. Compiled the code with USE\_DISCOVERY and MQTT\_HOST\_DISCOVERY enabled in the source code. Using the mosquitto MQTT broker. The de…

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## [Email node not working](https://discourse.nodered.org/t/email-node-not-working/44220)

<div class="topic-metadata">

**Author:** [@ALOKA1432](https://discourse.nodered.org/u/ALOKA1432)\
**Replies:** 1\
**Last updated:** [15 April 2021 09:57 UTC](https://discourse.nodered.org/t/email-node-not-working/44220 "2021-04-15T09:57:47Z")

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Hi All, The email node on my flow is not working. It is asking me to login from the browser. What is the issue ?

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## [Node red ibm clouddd](https://discourse.nodered.org/t/node-red-ibm-clouddd/44223)

<div class="topic-metadata">

**Author:** [@achref46](https://discourse.nodered.org/u/achref46)\
**Replies:** 0\
**Last updated:** [15 April 2021 09:38 UTC](https://discourse.nodered.org/t/node-red-ibm-clouddd/44223 "2021-04-15T09:38:27Z")

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why when i use node red with watson iot plateform in IBM cloud the nodes dosen't connect ? for iot application

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## [\[solved\] Data compare eMail / date now](https://discourse.nodered.org/t/solved-data-compare-email-date-now/44211)

<div class="topic-metadata">

**Author:** [@steinerma](https://discourse.nodered.org/u/steinerma)\
**Replies:** 2\
**Last updated:** [15 April 2021 08:18 UTC](https://discourse.nodered.org/t/solved-data-compare-email-date-now/44211 "2021-04-15T08:18:52Z")

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hi at all, I would like to compare two times with each other. One time is from a parsing of an eMail, the other is the current time. If the difference is greater than 20 seconds, a "true" message should be output. I do…

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## [Ability to structure flows](https://discourse.nodered.org/t/ability-to-structure-flows/44138)

<div class="topic-metadata">

**Author:** [@nickgrealy](https://discourse.nodered.org/u/nickgrealy)\
**Replies:** 7\
**Last updated:** [15 April 2021 08:16 UTC](https://discourse.nodered.org/t/ability-to-structure-flows/44138 "2021-04-15T08:16:45Z")

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Hi all, Just coming from an existing tooling background, and was wondering if there's any way to structure the flows in the "Info \> Flows" section, using "folders". Something like this (excuse the copy&paste job): I…

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## [EHOSTUNREACH after changing ips](https://discourse.nodered.org/t/ehostunreach-after-changing-ips/43895)

<div class="topic-metadata">

**Author:** [@John\_Barry](https://discourse.nodered.org/u/John_Barry)\
**Replies:** 6\
**Last updated:** [15 April 2021 08:12 UTC](https://discourse.nodered.org/t/ehostunreach-after-changing-ips/43895 "2021-04-15T08:12:49Z")

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Hi, I'm setting up 2 x pi's to read values from RS232 scales. I've used the waveshare RS232 to ethernet converters https://www.waveshare.com/rs232-485-to-eth.htm And followed the this link to get the ethernet and wif…

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