# Latest

**URL:** https://discourse.nodered.org/latest.md?page=914

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

**Page:** 915

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## [UI Dropdown - weird phenomena when using numbers as options, can you explain?](https://discourse.nodered.org/t/ui-dropdown-weird-phenomena-when-using-numbers-as-options-can-you-explain/38904)

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**Author:** [@diogom8](https://discourse.nodered.org/u/diogom8)\
**Replies:** 2\
**Last updated:** [10 January 2021 17:23 UTC](https://discourse.nodered.org/t/ui-dropdown-weird-phenomena-when-using-numbers-as-options-can-you-explain/38904 "2021-01-10T17:23:56Z")

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hello, I found a weird behaviour with the ui\_dropdown when using it with numbers as options. Basically when the options are dynamically defined in the flow, each value can only be selected once( weird, right ?). Exampl…

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## [Hardware choice for industrial nodered](https://discourse.nodered.org/t/hardware-choice-for-industrial-nodered/38078)

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**Author:** [@samuele](https://discourse.nodered.org/u/samuele)\
**Replies:** 65\
**Last updated:** [10 January 2021 17:23 UTC](https://discourse.nodered.org/t/hardware-choice-for-industrial-nodered/38078 "2021-01-10T17:23:46Z")

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Hello everyone and sorry for my bad English. With my company we are developing a small monitoring system to acquire parameters via modbus and rs485. Once acquired, the data will be sent using MQTT (amazon Iot) on an Amaz…

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## [I want to get notified when the website data changes](https://discourse.nodered.org/t/i-want-to-get-notified-when-the-website-data-changes/38900)

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**Author:** [@NipunKumar](https://discourse.nodered.org/u/NipunKumar)\
**Replies:** 1\
**Last updated:** [10 January 2021 16:20 UTC](https://discourse.nodered.org/t/i-want-to-get-notified-when-the-website-data-changes/38900 "2021-01-10T16:20:04Z")

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Hello everyone I want to get notification via email whenever the website start selling that product again. Website have userid and password to login. I am trying nbrowser node but its not working. can someone please …

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## [Nbrowser wait time](https://discourse.nodered.org/t/nbrowser-wait-time/6071)

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**Author:** [@M0CRT](https://discourse.nodered.org/u/M0CRT)\
**Replies:** 3\
**Last updated:** [10 January 2021 15:48 UTC](https://discourse.nodered.org/t/nbrowser-wait-time/6071 "2021-01-10T15:48:26Z")

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Hello All I'm using nbrowser, node-red-contrib-nbrowser, to automate a login process and task on a website. Everything is going great, however I need to wait for a flow variable to be set and need to pause the nbrowser…

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## [Checking variable state in a function loop](https://discourse.nodered.org/t/checking-variable-state-in-a-function-loop/38843)

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**Author:** [@injector22](https://discourse.nodered.org/u/injector22)\
**Replies:** 7\
**Last updated:** [10 January 2021 14:28 UTC](https://discourse.nodered.org/t/checking-variable-state-in-a-function-loop/38843 "2021-01-10T14:28:36Z")

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I have a GPIO that keeps bouncing on/off which I'm thinking is due to inference but before I go ripping out cabling I wanted to try and fix it via software. Before I get started let me just say I know about debouncing on…

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## [NodeRed on local Pi to NodeRed in Bluemix](https://discourse.nodered.org/t/nodered-on-local-pi-to-nodered-in-bluemix/37981)

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**Author:** [@mellis](https://discourse.nodered.org/u/mellis)\
**Replies:** 2\
**Last updated:** [10 January 2021 14:26 UTC](https://discourse.nodered.org/t/nodered-on-local-pi-to-nodered-in-bluemix/37981 "2021-01-10T14:26:54Z")

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I have an instance of NodeRed on a Pi and it works perfectly. I used the Pi GPIO to monitor some mechanical equipment, created alarms, runtime, cycle counts and local UI using NodeRED dashboards. I couldn't be more pleas…

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## [Error "WebSocket error: Error: connect ENETUNREACH" every 10 seconds](https://discourse.nodered.org/t/error-websocket-error-error-connect-enetunreach-every-10-seconds/38753)

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**Author:** [@4fc8042246ffd6745bb8](https://discourse.nodered.org/u/4fc8042246ffd6745bb8)\
**Replies:** 7\
**Last updated:** [10 January 2021 14:04 UTC](https://discourse.nodered.org/t/error-websocket-error-error-connect-enetunreach-every-10-seconds/38753 "2021-01-10T14:04:17Z")

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Hello all, since my last deploy I have an error that is displayed in the debug-view every 10 seconds. It doesent belong to the new flow. A restart of NodeRed and a restart of the Raspberry did not bring any improvement…

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## [Dashboard theme variables](https://discourse.nodered.org/t/dashboard-theme-variables/38892)

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**Author:** [@ozpos](https://discourse.nodered.org/u/ozpos)\
**Replies:** 0\
**Last updated:** [10 January 2021 13:14 UTC](https://discourse.nodered.org/t/dashboard-theme-variables/38892 "2021-01-10T13:14:00Z")

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Hi All, I have created a range slider from two stock sliders but cannot find a colour variable that represents the stock slider unfilled colour that I can use for dark and light desktop themes. I currently use rgba(…

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## [How to pass msg.path + msg.filename to file-in node?](https://discourse.nodered.org/t/how-to-pass-msg-path-msg-filename-to-file-in-node/38886)

<div class="topic-metadata">

**Author:** [@bird](https://discourse.nodered.org/u/bird)\
**Replies:** 2\
**Last updated:** [10 January 2021 11:52 UTC](https://discourse.nodered.org/t/how-to-pass-msg-path-msg-filename-to-file-in-node/38886 "2021-01-10T11:52:08Z")

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hi The msg.path and msg.filename are transferred to the file-in node. I want to set "msg.path" + "/" + "msg.filename" as the filename of the file-in node. I tried {{{msg.path}}} and {{msg.path}} but it didn't work. T…

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## [Print Out a group/notification or pdf file](https://discourse.nodered.org/t/print-out-a-group-notification-or-pdf-file/38754)

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**Author:** [@elboran](https://discourse.nodered.org/u/elboran)\
**Replies:** 7\
**Last updated:** [10 January 2021 10:50 UTC](https://discourse.nodered.org/t/print-out-a-group-notification-or-pdf-file/38754 "2021-01-10T10:50:17Z")

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Hi, I have a problem with the printing documents in node-red Dashboard. I couldn't found any information about printing out. I have a document at the path of home/file.pdf and i want to print out this document. Node-red …

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## [Modbus data to CSV file - NAN error occurs](https://discourse.nodered.org/t/modbus-data-to-csv-file-nan-error-occurs/36181)

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**Author:** [@Energycharges](https://discourse.nodered.org/u/Energycharges)\
**Replies:** 16\
**Last updated:** [10 January 2021 10:37 UTC](https://discourse.nodered.org/t/modbus-data-to-csv-file-nan-error-occurs/36181 "2021-01-10T10:37:17Z")

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While working with Modbus data to csv file , For every 5 minutes Interval injecting data from Modbus to csv file . Receiving data for parameters from Modbus to csv file , for a random interval NAN error occurs . Cannot …

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## [Node-red, docker, compose and auto update](https://discourse.nodered.org/t/node-red-docker-compose-and-auto-update/38881)

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**Author:** [@bce](https://discourse.nodered.org/u/bce)\
**Replies:** 2\
**Last updated:** [10 January 2021 10:25 UTC](https://discourse.nodered.org/t/node-red-docker-compose-and-auto-update/38881 "2021-01-10T10:25:08Z")

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i have node-red on docker via compose. i have watchtower running for the updates. now there has been an update for node-red and all flows are gone, but also the tamplets. how can I avoid this now, don't want to set th…

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## [MQTT Connection lost by node-red](https://discourse.nodered.org/t/mqtt-connection-lost-by-node-red/38740)

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**Author:** [@matschie](https://discourse.nodered.org/u/matschie)\
**Replies:** 18\
**Last updated:** [10 January 2021 10:18 UTC](https://discourse.nodered.org/t/mqtt-connection-lost-by-node-red/38740 "2021-01-10T10:18:20Z")

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Hello everyone! I've been reading a lot lately since i am diving deeper and deeper into the darkness of Home Automation. I do have some experience on the mc-programming (mainly arduino and esps). I am currently using …

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## [Microphone access from Dashboard](https://discourse.nodered.org/t/microphone-access-from-dashboard/3746)

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**Author:** [@sandra](https://discourse.nodered.org/u/sandra)\
**Replies:** 38\
**Last updated:** [10 January 2021 00:55 UTC](https://discourse.nodered.org/t/microphone-access-from-dashboard/3746 "2021-01-10T00:55:58Z")

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I am creating a chatbot and I want to be able to talk to the chatbot through the dashboard. I have tried the microphone node with the utils package and then using STT my bot understand the message perfectly but I need t…

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## [Keep only both end lines from a csv file](https://discourse.nodered.org/t/keep-only-both-end-lines-from-a-csv-file/38871)

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**Author:** [@Neuvidor](https://discourse.nodered.org/u/Neuvidor)\
**Replies:** 1\
**Last updated:** [9 January 2021 23:15 UTC](https://discourse.nodered.org/t/keep-only-both-end-lines-from-a-csv-file/38871 "2021-01-09T23:15:26Z")

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Dear all, I have a LEGRAND EcoCompteur which provide a log1.csv file over a http link http://192.168.1.xxx/log1.csv Each line give daily counters index. A new line is added each day at the end of this file meaning that…

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## [Switch Output to Inject Message](https://discourse.nodered.org/t/switch-output-to-inject-message/38867)

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**Author:** [@enque](https://discourse.nodered.org/u/enque)\
**Replies:** 11\
**Last updated:** [9 January 2021 22:59 UTC](https://discourse.nodered.org/t/switch-output-to-inject-message/38867 "2021-01-09T22:59:34Z")

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Please bear with me, I am brand new to Node Red. I am trying to send either of the inject messages at the bottom based on the switch outputs, but since the inject object has no inlets I cannot do this. What objects can…

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## [Compare 5 values](https://discourse.nodered.org/t/compare-5-values/38810)

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**Author:** [@Tobiasn2005](https://discourse.nodered.org/u/Tobiasn2005)\
**Replies:** 9\
**Last updated:** [9 January 2021 22:40 UTC](https://discourse.nodered.org/t/compare-5-values/38810 "2021-01-09T22:40:44Z")

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Hi everyone, In my family we use the HA app which can track the amount of steps per day. I can read these values in Node-Red but how can I compare these amounts/values/steps of 5 different entities and send back the hig…

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## [Display image if value true](https://discourse.nodered.org/t/display-image-if-value-true/38824)

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**Author:** [@warnert](https://discourse.nodered.org/u/warnert)\
**Replies:** 4\
**Last updated:** [9 January 2021 22:25 UTC](https://discourse.nodered.org/t/display-image-if-value-true/38824 "2021-01-09T22:25:25Z")

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I have build a thermostat and I would like to display a little flame on the dashboard if the heater is on.I now have used node-red-contribute-led that displays a green led when the flame is on, but it would be nicer if i…

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## [Stopping deploy because of missing nodetype](https://discourse.nodered.org/t/stopping-deploy-because-of-missing-nodetype/38868)

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**Author:** [@vikozo](https://discourse.nodered.org/u/vikozo)\
**Replies:** 2\
**Last updated:** [9 January 2021 22:25 UTC](https://discourse.nodered.org/t/stopping-deploy-because-of-missing-nodetype/38868 "2021-01-09T22:25:11Z")

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Hello i have done a import - thinking it would work nicely but it did not - so all the import i deleted. but since when deply is pressed i got the error of a missing server Die Flows wurden aufgrund fehlender Nodetyp…

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## [Node-Red will not complete loading with projects enabled](https://discourse.nodered.org/t/node-red-will-not-complete-loading-with-projects-enabled/38822)

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**Author:** [@flaver](https://discourse.nodered.org/u/flaver)\
**Replies:** 19\
**Last updated:** [9 January 2021 21:47 UTC](https://discourse.nodered.org/t/node-red-will-not-complete-loading-with-projects-enabled/38822 "2021-01-09T21:47:28Z")

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Node-Red is Installed with all defaults. Normal operation until "projects" is enabled. Then when starting I get: Graph showing "Loading Nodes 1/59 that stops at 59/59" Error: Failed to load ‘node-red/comment’ Normal…

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## [BigData side-channel?](https://discourse.nodered.org/t/bigdata-side-channel/38862)

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**Author:** [@mstormo](https://discourse.nodered.org/u/mstormo)\
**Replies:** 0\
**Last updated:** [9 January 2021 20:00 UTC](https://discourse.nodered.org/t/bigdata-side-channel/38862 "2021-01-09T20:00:21Z")

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We have a compute framework which is designed to process TBs of data in real-time. This compute framework uses a DAG, so it fits into the flow of Node-Red. Now, I do not intend Node-Red to process TBs of data in real tim…

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## [\[ANNOUNCE\] node-red-contrib-ui-svg: 2.2.0](https://discourse.nodered.org/t/announce-node-red-contrib-ui-svg-2-2-0/38859)

<div class="topic-metadata">

**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 0\
**Last updated:** [9 January 2021 19:37 UTC](https://discourse.nodered.org/t/announce-node-red-contrib-ui-svg-2-2-0/38859 "2021-01-09T19:37:18Z")

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Hi folks, During the last 6 weeks, a bunch of feature requests and bug fixes were submitted for the SVG node. So time to publish version 2.2.0 on NPM: What has changed: Support the empty ui paths in the settings.j…

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## [Update frist object with second object in function](https://discourse.nodered.org/t/update-frist-object-with-second-object-in-function/38842)

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**Author:** [@zanmange](https://discourse.nodered.org/u/zanmange)\
**Replies:** 2\
**Last updated:** [9 January 2021 18:08 UTC](https://discourse.nodered.org/t/update-frist-object-with-second-object-in-function/38842 "2021-01-09T18:08:54Z")

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first objet {"8f67e148-87f5-4b89-a02d-2865de575e36":{"bicycle":0,"person":0,"truck":0,"motorbike":0,"car":0,"bus":0},"392bf75c-dd21-40c2-83b9-a22ef5a4b094":{"bicycle":0,"person":0,"truck":0,"motorbike":0,"car":0,"bus":0…

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## [Combine more than one msg.payload in one msg.payload](https://discourse.nodered.org/t/combine-more-than-one-msg-payload-in-one-msg-payload/38835)

<div class="topic-metadata">

**Author:** [@badr\_al\_moragab](https://discourse.nodered.org/u/badr_al_moragab)\
**Replies:** 2\
**Last updated:** [9 January 2021 16:23 UTC](https://discourse.nodered.org/t/combine-more-than-one-msg-payload-in-one-msg-payload/38835 "2021-01-09T16:23:00Z")

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Hello I'm student and I'm doing my final year project I need your help to combine three msg.payload to one msg.payload to send it { temperature: msg.payload 2 °C humidity: msg.payload 1 °C weatherState: msg.payload 3…

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## [Pre-populate drop down dashboard node](https://discourse.nodered.org/t/pre-populate-drop-down-dashboard-node/38844)

<div class="topic-metadata">

**Author:** [@shel](https://discourse.nodered.org/u/shel)\
**Replies:** 11\
**Last updated:** [9 January 2021 15:25 UTC](https://discourse.nodered.org/t/pre-populate-drop-down-dashboard-node/38844 "2021-01-09T15:25:02Z")

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in one of my flows I want to use the dashboard drop down node (ui\_dropdown) to select a number from 1 to 45. After the number is selected it is then read to flow.set to preserve that number across reboots. The help panel…

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## [On Off Dash Button](https://discourse.nodered.org/t/on-off-dash-button/38345)

<div class="topic-metadata">

**Author:** [@davenrea](https://discourse.nodered.org/u/davenrea)\
**Replies:** 2\
**Last updated:** [9 January 2021 15:06 UTC](https://discourse.nodered.org/t/on-off-dash-button/38345 "2021-01-09T15:06:11Z")

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I am trying create a simple button / switch on a dashboard to stop a flow. I have put on a dashboard a button to manually input data and control a device. Said device is also controlled by an incoming flow. I want to be …

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## [Pulse Generator in RPi 3B+](https://discourse.nodered.org/t/pulse-generator-in-rpi-3b/38825)

<div class="topic-metadata">

**Author:** [@plcguy](https://discourse.nodered.org/u/plcguy)\
**Replies:** 3\
**Last updated:** [9 January 2021 14:33 UTC](https://discourse.nodered.org/t/pulse-generator-in-rpi-3b/38825 "2021-01-09T14:33:59Z")

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Hi, I am looking for a code to generate pulse output based on the integer input from the dashboard. user will input a value between 1 - 200 and this is pulse per min and a led connected to the GPIO 12. can anyone give…

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## [Pi 7" touch problem](https://discourse.nodered.org/t/pi-7-touch-problem/38840)

<div class="topic-metadata">

**Author:** [@ozpos](https://discourse.nodered.org/u/ozpos)\
**Replies:** 5\
**Last updated:** [9 January 2021 14:21 UTC](https://discourse.nodered.org/t/pi-7-touch-problem/38840 "2021-01-09T14:21:17Z")

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Does anyone know how to prevent this ?

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## [Ui\_template md-slider help - workable, almost complete](https://discourse.nodered.org/t/ui-template-md-slider-help-workable-almost-complete/37328)

<div class="topic-metadata">

**Author:** [@ozpos](https://discourse.nodered.org/u/ozpos)\
**Replies:** 12\
**Last updated:** [8 January 2021 21:14 UTC](https://discourse.nodered.org/t/ui-template-md-slider-help-workable-almost-complete/37328 "2021-01-08T21:14:06Z")

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I have these two sliders but cannot work them independently. \[{"id":"279500ed.f416b","type":"ui\_template","z":"b5cc8912.1fc848","group":"b290cc21.d734d","name":"ranges","order":1,"width":8,"height":"2","format":"\<!-…

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## [Convert Bytes to integer](https://discourse.nodered.org/t/convert-bytes-to-integer/15153)

<div class="topic-metadata">

**Author:** [@injector22](https://discourse.nodered.org/u/injector22)\
**Replies:** 14\
**Last updated:** [9 January 2021 13:31 UTC](https://discourse.nodered.org/t/convert-bytes-to-integer/15153 "2021-01-09T13:31:47Z")

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I have a battery controller that sends UDP packets with the stats on the battery. Using the UDP node I was able to capture the packet but I'm not exactly sure how I would go about converting the Bytes to integers. Docum…

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