# General **URL:** https://discourse.nodered.org/c/general/7.md?page=340 [Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md) **Page:** 341 --- ## [A node to read lines from a csv list](https://discourse.nodered.org/t/a-node-to-read-lines-from-a-csv-list/65995)
**Author:** [@loyaltolex](https://discourse.nodered.org/u/loyaltolex)\ **Replies:** 6\ **Last updated:** [4 August 2022 11:05 UTC](https://discourse.nodered.org/t/a-node-to-read-lines-from-a-csv-list/65995 "2022-08-04T11:05:05Z")
I have a simple list of tide times like this on the local storage hl number AEST date & time height 0 60050 1/01/2022 6:59 1.76 1 60050 1/01/2022 13:25 0.19 0 60050 1/01/2022 19:04 1.16 1 60050 2/01/2022 0:49 0.… --- ## [Node-RED Pythonshell Raspberry Pi](https://discourse.nodered.org/t/node-red-pythonshell-raspberry-pi/65990)
**Author:** [@Alexandru89](https://discourse.nodered.org/u/Alexandru89)\ **Replies:** 7\ **Last updated:** [4 August 2022 10:41 UTC](https://discourse.nodered.org/t/node-red-pythonshell-raspberry-pi/65990 "2022-08-04T10:41:52Z")
Hi all, I would like to run in Node-RED a python script using a python shell block. After adding the location of the .py script inside the block settings and adding a simple debug window the output is empty. The locat… --- ## [Controlling VLC](https://discourse.nodered.org/t/controlling-vlc/65799)
**Author:** [@aytli](https://discourse.nodered.org/u/aytli)\ **Replies:** 19\ **Last updated:** [4 August 2022 07:42 UTC](https://discourse.nodered.org/t/controlling-vlc/65799 "2022-08-04T07:42:37Z")
I'm trying to create a flow to play videos on a Raspberry Pi using VLC. However, I'm having trouble even starting VLC with Node Red. Simply using an exec node to run "vlc" does not work. Here are some of the things I've… --- ## [Pallets are not installing](https://discourse.nodered.org/t/pallets-are-not-installing/65991)
**Author:** [@RBSI](https://discourse.nodered.org/u/RBSI)\ **Replies:** 0\ **Last updated:** [3 August 2022 22:00 UTC](https://discourse.nodered.org/t/pallets-are-not-installing/65991 "2022-08-03T22:00:04Z")
Hello i am trying to install the OPCUA pallet in my node-red. I am currently running node-red version 2.2.2 on the docker and i have used this following command to start the container and run the node-red: docker run… --- ## [USB Barcode / NFC Reader](https://discourse.nodered.org/t/usb-barcode-nfc-reader/65857)
**Author:** [@Flustered](https://discourse.nodered.org/u/Flustered)\ **Replies:** 5\ **Last updated:** [3 August 2022 20:22 UTC](https://discourse.nodered.org/t/usb-barcode-nfc-reader/65857 "2022-08-03T20:22:05Z")
Hi. I'm new. Be gentle! Using node Red 3.0.0 I'm trying to get a headless device working; the idea is simple: scan an RFID card on a reader, and it plays a music track. Simples? The node-red projects I have seen us… --- ## [Cannot install new pallets (OPCUA)](https://discourse.nodered.org/t/cannot-install-new-pallets-opcua/65986)
**Author:** [@RBSI](https://discourse.nodered.org/u/RBSI)\ **Replies:** 5\ **Last updated:** [3 August 2022 20:14 UTC](https://discourse.nodered.org/t/cannot-install-new-pallets-opcua/65986 "2022-08-03T20:14:09Z")
Hello i am unable to install OPCUA nodes and i don't know what are these errors? can anyone help me to fix this? Thank you --- ## [Another message split issue](https://discourse.nodered.org/t/another-message-split-issue/65962)
**Author:** [@9toejack](https://discourse.nodered.org/u/9toejack)\ **Replies:** 19\ **Last updated:** [3 August 2022 18:51 UTC](https://discourse.nodered.org/t/another-message-split-issue/65962 "2022-08-03T18:51:05Z")
Ok im sure im missing something simple here. I am trying to for now get the power settings from an esp8266 with tasmota here is the mqtt message. {"Time":"2022-08-03T07:44:49","Uptime":"0T04:10:13","UptimeSec":15013,"H… --- ## [Documentation improvement](https://discourse.nodered.org/t/documentation-improvement/65984)
**Author:** [@drmibell](https://discourse.nodered.org/u/drmibell)\ **Replies:** 1\ **Last updated:** [3 August 2022 17:21 UTC](https://discourse.nodered.org/t/documentation-improvement/65984 "2022-08-03T17:21:39Z")
No one likes to hear complaints about documentation, but I have a suggestion that should not require a lot of effort. It has been a a year or so since I have updated any of my flows or contributed nodes, and I have been … --- ## [Issue joining parallel flows into one](https://discourse.nodered.org/t/issue-joining-parallel-flows-into-one/65928)
**Author:** [@ItsDaveTheWave](https://discourse.nodered.org/u/ItsDaveTheWave)\ **Replies:** 5\ **Last updated:** [3 August 2022 14:57 UTC](https://discourse.nodered.org/t/issue-joining-parallel-flows-into-one/65928 "2022-08-03T14:57:56Z")
I want to divide one flow into two parallel flows, and then when both flows are finished i want to join them back into one, while also merging one object(msg.data in my case) in wich I store relevant info to be used afte… --- ## [I have a question please](https://discourse.nodered.org/t/i-have-a-question-please/65967)
**Author:** [@Fathi2022](https://discourse.nodered.org/u/Fathi2022)\ **Replies:** 5\ **Last updated:** [3 August 2022 14:57 UTC](https://discourse.nodered.org/t/i-have-a-question-please/65967 "2022-08-03T14:57:37Z")
by mistake, I have removed the node so when I deploy the code it gives me this message Error: node not deployed. is there undo command? --- ## [How to securely communicate with HTTPS API?](https://discourse.nodered.org/t/how-to-securely-communicate-with-https-api/65975)
**Author:** [@Sulomus](https://discourse.nodered.org/u/Sulomus)\ **Replies:** 0\ **Last updated:** [3 August 2022 14:02 UTC](https://discourse.nodered.org/t/how-to-securely-communicate-with-https-api/65975 "2022-08-03T14:02:36Z")
Hello, my team is using Node-Red for data acquisition and Grafana for data visualization. Right now we are "fighting" with securing our HTTP requests from Node-Red to Grafana HTTPS API endpoint: We were trying to ex… --- ## [How to preserve the data of a chart node across a restart of Node Red?](https://discourse.nodered.org/t/how-to-preserve-the-data-of-a-chart-node-across-a-restart-of-node-red/65879)
**Author:** [@Harpau](https://discourse.nodered.org/u/Harpau)\ **Replies:** 8\ **Last updated:** [3 August 2022 13:35 UTC](https://discourse.nodered.org/t/how-to-preserve-the-data-of-a-chart-node-across-a-restart-of-node-red/65879 "2022-08-03T13:35:38Z")
I visualize in a Chart Node the data of a climate sensor over a longer period of time. Unfortunately, every time Node Red is restarted, all data recorded up to that point is lost. Has anyone already solved this problem… --- ## [Copy Node ID from debug ERROR](https://discourse.nodered.org/t/copy-node-id-from-debug-error/65960)
**Author:** [@scargill](https://discourse.nodered.org/u/scargill)\ **Replies:** 2\ **Last updated:** [3 August 2022 11:03 UTC](https://discourse.nodered.org/t/copy-node-id-from-debug-error/65960 "2022-08-03T11:03:16Z")
I've a node somewhere that is constantly causing errors. Over on the debug tab I see msg.error and above that the timestamp and the node ID - but if I try COP(Control-C) so I can find out where the node is... a LINK appe… --- ## [Manage URLs in uibuilder](https://discourse.nodered.org/t/manage-urls-in-uibuilder/65956)
**Author:** [@miladmrm](https://discourse.nodered.org/u/miladmrm)\ **Replies:** 3\ **Last updated:** [3 August 2022 09:56 UTC](https://discourse.nodered.org/t/manage-urls-in-uibuilder/65956 "2022-08-03T09:56:32Z")
Uibuilder only works with the front end, and NR handles the back end, OK. The question that comes to me here is how to manage URLs? For example, what if I want a path like localhost:1880/uibtest/example (instead of rend… --- ## [Uibuilder - Changing the size of html elements when deploying frontend codes](https://discourse.nodered.org/t/uibuilder-changing-the-size-of-html-elements-when-deploying-frontend-codes/65911)
**Author:** [@miladmrm](https://discourse.nodered.org/u/miladmrm)\ **Replies:** 7\ **Last updated:** [3 August 2022 06:29 UTC](https://discourse.nodered.org/t/uibuilder-changing-the-size-of-html-elements-when-deploying-frontend-codes/65911 "2022-08-03T06:29:25Z")
UIbuilder changes the size of HTML elements in my frontend code when deploying. What is the reason? My html body out of uibuilder is 1862\*1040 and in uibuilder is 1551\*1034. Even when I did not use uIbuilder and used t… --- ## [How to solve HTTP - Request error](https://discourse.nodered.org/t/how-to-solve-http-request-error/65794)
**Author:** [@Swissurs](https://discourse.nodered.org/u/Swissurs)\ **Replies:** 12\ **Last updated:** [3 August 2022 06:22 UTC](https://discourse.nodered.org/t/how-to-solve-http-request-error/65794 "2022-08-03T06:22:38Z")
I have a issue with solving HTTP-request error using following request in the browser returns a usable data string https://192.168.0.74:1443/api/config/flags But in node red there are alarms I can't solve For example… --- ## [Reference env variable in property name](https://discourse.nodered.org/t/reference-env-variable-in-property-name/63015)
**Author:** [@AlexKalopsia](https://discourse.nodered.org/u/AlexKalopsia)\ **Replies:** 10\ **Last updated:** [3 August 2022 06:05 UTC](https://discourse.nodered.org/t/reference-env-variable-in-property-name/63015 "2022-08-03T06:05:43Z")
Hi everyone, I am trying to generalize a subflow so that I can use it in multiple rooms of my place. Some of my global scope properties look something like global.currentscene.livingroom or global.currentscene.bedroom. … --- ## [Configure Node-RED for TLS termination on reverse proxy](https://discourse.nodered.org/t/configure-node-red-for-tls-termination-on-reverse-proxy/65914)
**Author:** [@AngryMuppet](https://discourse.nodered.org/u/AngryMuppet)\ **Replies:** 2\ **Last updated:** [2 August 2022 22:30 UTC](https://discourse.nodered.org/t/configure-node-red-for-tls-termination-on-reverse-proxy/65914 "2022-08-02T22:30:34Z")
Hello community, I am a (mainly windows) sysadmin who has inherited a pre-bundled OT measurement system / dashboard built on a Pi 4 with Node-Red, Graphana and Postgresql docker containers sitting behind a HAproxy rever… --- ## [Node-red No debug output (WAGO PFC & ecockpit)](https://discourse.nodered.org/t/node-red-no-debug-output-wago-pfc-ecockpit/65368)
**Author:** [@RBSI](https://discourse.nodered.org/u/RBSI)\ **Replies:** 7\ **Last updated:** [2 August 2022 21:23 UTC](https://discourse.nodered.org/t/node-red-no-debug-output-wago-pfc-ecockpit/65368 "2022-08-02T21:23:35Z")
Hello, i am trying to create a simple program where node-red receives UDP messages from software called ecockpit which creates UDP network sender variables. I am trying to see that variable on the node-red flows by using… --- ## [Sonoff SNZB02 Data interpretation](https://discourse.nodered.org/t/sonoff-snzb02-data-interpretation/65940)
**Author:** [@Alexandru89](https://discourse.nodered.org/u/Alexandru89)\ **Replies:** 7\ **Last updated:** [2 August 2022 19:50 UTC](https://discourse.nodered.org/t/sonoff-snzb02-data-interpretation/65940 "2022-08-02T19:50:29Z")
Dear community, I want to read the information from SNZB02 temperature sensor and display all the components on different debug blocks to be able later to display them on gauges. How can I do to split the temperature, … --- ## [Wire connection linkout to linkin in different flows (tabs)](https://discourse.nodered.org/t/wire-connection-linkout-to-linkin-in-different-flows-tabs/65936)
**Author:** [@gnome2012](https://discourse.nodered.org/u/gnome2012)\ **Replies:** 4\ **Last updated:** [2 August 2022 17:45 UTC](https://discourse.nodered.org/t/wire-connection-linkout-to-linkin-in-different-flows-tabs/65936 "2022-08-02T17:45:21Z")
Hi there, I don't if I post in the right section here. Maybe the admin will move this. I'm Using Nodered 3.0.1. In previous versions I was able to made the connections between linkout and linkin nodes by wiring from s… --- ## [Execute a flow when pages (URL) opens or refreshes](https://discourse.nodered.org/t/execute-a-flow-when-pages-url-opens-or-refreshes/65783)
**Author:** [@scoobie71](https://discourse.nodered.org/u/scoobie71)\ **Replies:** 7\ **Last updated:** [2 August 2022 13:41 UTC](https://discourse.nodered.org/t/execute-a-flow-when-pages-url-opens-or-refreshes/65783 "2022-08-02T13:41:39Z")
I have a webpage built with Ui-Builder, where i need to display data from sqlite. Using the inject node i am able to see the data, eveytime i manually press the inject node. Is there a way to remove this manual inject … --- ## [Zigbee2mqtt SNZB-02 Raspberry Pi](https://discourse.nodered.org/t/zigbee2mqtt-snzb-02-raspberry-pi/65921)
**Author:** [@Alexandru89](https://discourse.nodered.org/u/Alexandru89)\ **Replies:** 6\ **Last updated:** [2 August 2022 12:42 UTC](https://discourse.nodered.org/t/zigbee2mqtt-snzb-02-raspberry-pi/65921 "2022-08-02T12:42:40Z")
Dear Community, I'm really struggling for a few days to connect a SonOFF temperature sensor with Node-Red without any luck. I installed zigbee2mqtt to Raspberry Pi accordingly to this website: Linux | Zigbee2MQTT Aft… --- ## [Uibuilder - Manage form data](https://discourse.nodered.org/t/uibuilder-manage-form-data/65927)
**Author:** [@miladmrm](https://discourse.nodered.org/u/miladmrm)\ **Replies:** 1\ **Last updated:** [2 August 2022 12:00 UTC](https://discourse.nodered.org/t/uibuilder-manage-form-data/65927 "2022-08-02T12:00:51Z")
How to manage form data sent from UI Builder in NR? \
\ \ \ **Author:** [@corin.corvus](https://discourse.nodered.org/u/corin.corvus)\ **Replies:** 0\ **Last updated:** [2 August 2022 11:31 UTC](https://discourse.nodered.org/t/manual-energy-input-for-database-and-grafana-dashboard/65926 "2022-08-02T11:31:32Z") Hi, i dont have any chance to monitore my electricity meter at home. I try to add a number pad and Date field on the node-red Dashboard to input my Meterscores with date in a database of Node-red. After this run fine … --- ## [Can't send a msg.topic in a scope.send for UI control](https://discourse.nodered.org/t/cant-send-a-msg-topic-in-a-scope-send-for-ui-control/65896)
**Author:** [@Wilay](https://discourse.nodered.org/u/Wilay)\ **Replies:** 5\ **Last updated:** [2 August 2022 10:16 UTC](https://discourse.nodered.org/t/cant-send-a-msg-topic-in-a-scope-send-for-ui-control/65896 "2022-08-02T10:16:06Z")
Basically, I'm trying to send the name of the topic in a scope.send function in a template node in order to make the button of my template send to a different tab. The code I'm using is this : \ (function(scope) … --- ## [Electricity buy/sell logic](https://discourse.nodered.org/t/electricity-buy-sell-logic/65841)
**Author:** [@travellinground](https://discourse.nodered.org/u/travellinground)\ **Replies:** 8\ **Last updated:** [2 August 2022 07:51 UTC](https://discourse.nodered.org/t/electricity-buy-sell-logic/65841 "2022-08-02T07:51:45Z")
Hi, I'm new node-red, but had read this thread but I couldn't quite do exactly what I'm trying to do, which is see if I could use my battery to trade electricity (and also power my own loads). I can pull from the API t… --- ## [\[RESOLVE\] FR/EN - CSV line by line / API / Write CSV](https://discourse.nodered.org/t/resolve-fr-en-csv-line-by-line-api-write-csv/65867)
**Author:** [@Gus0711](https://discourse.nodered.org/u/Gus0711)\ **Replies:** 4\ **Last updated:** [2 August 2022 07:35 UTC](https://discourse.nodered.org/t/resolve-fr-en-csv-line-by-line-api-write-csv/65867 "2022-08-02T07:35:04Z")
Hello, I'm new to Node Red, and I can't solve a problem. My objective, to read a CSV file, line by line. For each line execute an action towards a server, wait for the response, write this response then go to the next… --- ## [toLocaleString format question](https://discourse.nodered.org/t/tolocalestring-format-question/65903)
**Author:** [@Mick](https://discourse.nodered.org/u/Mick)\ **Replies:** 1\ **Last updated:** [2 August 2022 07:29 UTC](https://discourse.nodered.org/t/tolocalestring-format-question/65903 "2022-08-02T07:29:56Z")
I am running a bash script to get pi vcgencmd outputs. Here is the output: arm:frequency(48)=1500398464, core:frequency(1)=500000992, h264:frequency(28)=0,isp:frequency(45)=0,v3d:frequency(46)=500000992,core:volt=0.850… --- ## [Determine x and y coordinate in node node-red-image-tools to crop image](https://discourse.nodered.org/t/determine-x-and-y-coordinate-in-node-node-red-image-tools-to-crop-image/65909)
**Author:** [@faridomu](https://discourse.nodered.org/u/faridomu)\ **Replies:** 1\ **Last updated:** [2 August 2022 06:48 UTC](https://discourse.nodered.org/t/determine-x-and-y-coordinate-in-node-node-red-image-tools-to-crop-image/65909 "2022-08-02T06:48:51Z")
Hello everyone I have to crop image using node node-red-image-tools but i don't know how to determine x and y coordinate. I already crop image before and input random number for x and y that show in figure below. but … [Previous page](https://discourse.nodered.org/c/general/7.md?page=339) [Next page](https://discourse.nodered.org/c/general/7.md?page=341)