# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=135

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

**Page:** 136

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## [How to stop the flow with catch block if any http-request call return a 5xx error?](https://discourse.nodered.org/t/how-to-stop-the-flow-with-catch-block-if-any-http-request-call-return-a-5xx-error/85172)

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**Author:** [@Geheim](https://discourse.nodered.org/u/Geheim)\
**Replies:** 3\
**Last updated:** [4 February 2024 07:27 UTC](https://discourse.nodered.org/t/how-to-stop-the-flow-with-catch-block-if-any-http-request-call-return-a-5xx-error/85172 "2024-02-04T07:27:31Z")

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I have added a catch block to the flow for http request. I observed that even though the catch block is triggered the flow (within which I have http-request) triggering catch block still continues. This results in the re…

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## [Use of Node-RED in a large IoT project based on an S7-1200 PLC and an IoT application](https://discourse.nodered.org/t/use-of-node-red-in-a-large-iot-project-based-on-an-s7-1200-plc-and-an-iot-application/85165)

<div class="topic-metadata">

**Author:** [@nioureddine](https://discourse.nodered.org/u/nioureddine)\
**Replies:** 1\
**Last updated:** [3 February 2024 19:48 UTC](https://discourse.nodered.org/t/use-of-node-red-in-a-large-iot-project-based-on-an-s7-1200-plc-and-an-iot-application/85165 "2024-02-03T19:48:02Z")

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Hello everyone, I hope you are doing well. I have a question regarding the use of Node-RED in a large IoT project based on an S7-1200 PLC and an IoT application. Node-RED acts as an intermediary between the PLC and the a…

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## [Multiple node-reds with shared files](https://discourse.nodered.org/t/multiple-node-reds-with-shared-files/85084)

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**Author:** [@jmorris644](https://discourse.nodered.org/u/jmorris644)\
**Replies:** 17\
**Last updated:** [3 February 2024 18:03 UTC](https://discourse.nodered.org/t/multiple-node-reds-with-shared-files/85084 "2024-02-03T18:03:46Z")

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This might be a strange request. I have built my first cluster. The cluster has shared storage. I started two instances of node-red and I had expected that deploying a change via one instance would show up in the other i…

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## [Driving neopixels from a CAN-Signal](https://discourse.nodered.org/t/driving-neopixels-from-a-can-signal/83092)

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**Author:** [@Mo\_251](https://discourse.nodered.org/u/Mo_251)\
**Replies:** 23\
**Last updated:** [3 February 2024 17:33 UTC](https://discourse.nodered.org/t/driving-neopixels-from-a-can-signal/83092 "2024-02-03T17:33:00Z")

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node-red v3.0.2 node-red-node-pi-neopixel v2.0.0. Hi, this is my first experience with raspberry pi, node-red and neopixels, so please be patient with me :slight\_smile: Within my bachelor thesis i am trying to read a…

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## [Cannot able to query data into PostgreSQL from PI](https://discourse.nodered.org/t/cannot-able-to-query-data-into-postgresql-from-pi/85164)

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**Author:** [@shubhamnodered](https://discourse.nodered.org/u/shubhamnodered)\
**Replies:** 3\
**Last updated:** [3 February 2024 17:22 UTC](https://discourse.nodered.org/t/cannot-able-to-query-data-into-postgresql-from-pi/85164 "2024-02-03T17:22:30Z")

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Hi Guys! Needed help... Node-red version \[PC\]: -- node-red@3.0.2 Node.js version: -- v18.17.1 I am trying to query data into PostgreSQL \[running on my PC\] from node-red \[running on PI\]. But i received error "Error:…

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## [Sim800C no connection](https://discourse.nodered.org/t/sim800c-no-connection/84955)

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**Author:** [@Shwowak](https://discourse.nodered.org/u/Shwowak)\
**Replies:** 2\
**Last updated:** [3 February 2024 15:15 UTC](https://discourse.nodered.org/t/sim800c-no-connection/84955 "2024-02-03T15:15:30Z")

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Hey Guys i have a Sim800C and i have no connection. Nodered I connected the Sim800c with a usb-FTDI\_FT232R\_USB\_UARTConnector and then connected it to the Raspberrypi. This is also recognized nodered: image: nodere…

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## [Hide - show a group element](https://discourse.nodered.org/t/hide-show-a-group-element/85154)

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**Author:** [@lucianv](https://discourse.nodered.org/u/lucianv)\
**Replies:** 1\
**Last updated:** [2 February 2024 19:29 UTC](https://discourse.nodered.org/t/hide-show-a-group-element/85154 "2024-02-02T19:29:41Z")

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Hi all, I am using this code on a button and is working { "group": { "hide": \[ "tab\_group1" \], "show": \[ "tab\_group2" \] } } How can I control show / hide only of one or more elements from a group and not th…

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## [Create daily sqlite3 databases](https://discourse.nodered.org/t/create-daily-sqlite3-databases/85088)

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**Author:** [@Ela](https://discourse.nodered.org/u/Ela)\
**Replies:** 6\
**Last updated:** [2 February 2024 19:09 UTC](https://discourse.nodered.org/t/create-daily-sqlite3-databases/85088 "2024-02-02T19:09:09Z")

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I am trying to create daily sqlite3 databases. I have a flow that copy the existing db file to another location and deletes the copied file creates a new sqlite3 db file. Create tables Step 1,2 and 3 no issues. but w…

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## [Compare mcp Value with 100](https://discourse.nodered.org/t/compare-mcp-value-with-100/85151)

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**Author:** [@Nobel](https://discourse.nodered.org/u/Nobel)\
**Replies:** 3\
**Last updated:** [2 February 2024 17:30 UTC](https://discourse.nodered.org/t/compare-mcp-value-with-100/85151 "2024-02-02T17:30:59Z")

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I am currently writing my thesis and I'm new to Node-RED. I have made a PCB, where I get a value from a mcp3008. Now I have a problem, I have build a flow, which works for now, but I have to implement something to compar…

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## [Node Red Addon - 17.0.4 (3.1.3) - Issues with Data Field](https://discourse.nodered.org/t/node-red-addon-17-0-4-3-1-3-issues-with-data-field/85148)

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**Author:** [@leacho73](https://discourse.nodered.org/u/leacho73)\
**Replies:** 11\
**Last updated:** [2 February 2024 15:37 UTC](https://discourse.nodered.org/t/node-red-addon-17-0-4-3-1-3-issues-with-data-field/85148 "2024-02-02T15:37:13Z")

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Hi All, I've just upgraded node red to HA Add-On version to 17.0.4 - and although it appears to be functioning ok - if I try and edit any call service nodes - I am getting an error with an empty data field, and also it …

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## [Node-red-node-serialport : request maxListners](https://discourse.nodered.org/t/node-red-node-serialport-request-maxlistners/85146)

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**Author:** [@Nadhir](https://discourse.nodered.org/u/Nadhir)\
**Replies:** 0\
**Last updated:** [2 February 2024 14:29 UTC](https://discourse.nodered.org/t/node-red-node-serialport-request-maxlistners/85146 "2024-02-02T14:29:19Z")

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I'm using node-red-node-serialport : serial request Node to connect to an external instrument , I'm using the Node multiple times with in a subflow and using the subflow many times in my flows , console log is throwin…

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## [Sendkeys to enter fullscreen](https://discourse.nodered.org/t/sendkeys-to-enter-fullscreen/4642)

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**Author:** [@BastianG](https://discourse.nodered.org/u/BastianG)\
**Replies:** 10\
**Last updated:** [2 February 2024 12:06 UTC](https://discourse.nodered.org/t/sendkeys-to-enter-fullscreen/4642 "2024-02-02T12:06:53Z")

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Hi there. Anyone have experience using sendkeys? I would like to make a button on my dashboard which sends F11 to my system when clicking the button. (Hopefully the screen will go to full screen then) :slight\_smile: I…

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## [Node-Red Server Speed comparison](https://discourse.nodered.org/t/node-red-server-speed-comparison/85087)

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**Author:** [@Berx](https://discourse.nodered.org/u/Berx)\
**Replies:** 8\
**Last updated:** [2 February 2024 09:47 UTC](https://discourse.nodered.org/t/node-red-server-speed-comparison/85087 "2024-02-02T09:47:20Z")

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Hi there fellow Node-Red friends, has anyone ever compared the speeds of node-red running on different platforms? For example, how responsive is Node-Red on a Linux machine compared to it running on the same hardware w…

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## [\[Q:\] need help to evaluate the pricetag for contents of fueltank/battery filled with "chunks" of energy at different prices](https://discourse.nodered.org/t/q-need-help-to-evaluate-the-pricetag-for-contents-of-fueltank-battery-filled-with-chunks-of-energy-at-different-prices/84990)

<div class="topic-metadata">

**Author:** [@hominidae](https://discourse.nodered.org/u/hominidae)\
**Replies:** 3\
**Last updated:** [2 February 2024 09:33 UTC](https://discourse.nodered.org/t/q-need-help-to-evaluate-the-pricetag-for-contents-of-fueltank-battery-filled-with-chunks-of-energy-at-different-prices/84990 "2024-02-02T09:33:23Z")

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Hi there, I need to get my head around a thing and how to do this with NR: let's assume I have a fuel-tank / a battery that is able to store/provide a certain amount of energy (kWh) between full (100%) and empty (10%)…

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## [Looking for an oscillator](https://discourse.nodered.org/t/looking-for-an-oscillator/85094)

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**Author:** [@alexander77](https://discourse.nodered.org/u/alexander77)\
**Replies:** 8\
**Last updated:** [2 February 2024 07:30 UTC](https://discourse.nodered.org/t/looking-for-an-oscillator/85094 "2024-02-02T07:30:07Z")

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Hi, for a test setup i need a programmable oszillator to trigger a ADS1115 I2C A/D converter for 0.1 to 1 seconds at 6 to 12 kHz. Has anyone an idea how to realize this?

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## [Multiple inputs, multiple variables to single output ( single string)](https://discourse.nodered.org/t/multiple-inputs-multiple-variables-to-single-output-single-string/85119)

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**Author:** [@Pjlals](https://discourse.nodered.org/u/Pjlals)\
**Replies:** 4\
**Last updated:** [2 February 2024 04:34 UTC](https://discourse.nodered.org/t/multiple-inputs-multiple-variables-to-single-output-single-string/85119 "2024-02-02T04:34:36Z")

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hi everyone Pls find the flow attached below , instead of inject1 & inject 2 nodes i want to text input nodes or single ui form \[ { "id": "e5aae51cd3f577c7", "type": "tab", "label": "Flow 11", "disabled": false, …

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## [Email alert when sensor battery is low](https://discourse.nodered.org/t/email-alert-when-sensor-battery-is-low/84525)

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**Author:** [@bkenobi](https://discourse.nodered.org/u/bkenobi)\
**Replies:** 7\
**Last updated:** [2 February 2024 03:31 UTC](https://discourse.nodered.org/t/email-alert-when-sensor-battery-is-low/84525 "2024-02-02T03:31:06Z")

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I have a flow that processes my Acurite temperature/humidity sensors sent from rtl\_433 via MQTT. One of the fields the sensor provides is a battery\_ok value which is 1 when normal and returns 0 when it drops below a pre…

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## [HOW TO LOSE YOUR WORK: git project style](https://discourse.nodered.org/t/how-to-lose-your-work-git-project-style/85135)

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**Author:** [@jsprenkle](https://discourse.nodered.org/u/jsprenkle)\
**Replies:** 3\
**Last updated:** [1 February 2024 23:19 UTC](https://discourse.nodered.org/t/how-to-lose-your-work-git-project-style/85135 "2024-02-01T23:19:16Z")

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If you use the new Git?project BEWARE! Make sure you have backups. After all the repeated nagging by the UI I decided to create a project last night. I created a project but quickly gave up because of the lack of docum…

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## [NODERED resets data $FLOWS "${@}](https://discourse.nodered.org/t/nodered-resets-data-flows/85099)

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**Author:** [@Chimo](https://discourse.nodered.org/u/Chimo)\
**Replies:** 2\
**Last updated:** [1 February 2024 22:32 UTC](https://discourse.nodered.org/t/nodered-resets-data-flows/85099 "2024-02-01T22:32:46Z")

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Good night: Without having modified any flow I found my NodeRed restarting (I use it in Docker) In the log I saw this "error" ./entrypoint.sh: line 14: 7 Killed /usr/local/bin/node $NODE\_OPTIONS node\_modules/node-red/…

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## [Flexbox css styling on no-code elements in uibuilder problem](https://discourse.nodered.org/t/flexbox-css-styling-on-no-code-elements-in-uibuilder-problem/85122)

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**Author:** [@pandoras\_node](https://discourse.nodered.org/u/pandoras_node)\
**Replies:** 1\
**Last updated:** [1 February 2024 22:03 UTC](https://discourse.nodered.org/t/flexbox-css-styling-on-no-code-elements-in-uibuilder-problem/85122 "2024-02-01T22:03:01Z")

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Hello. Flexbox css dont work on my uib element forms. My UIbuilder dashboard have a mix of no code html (uib-element forms) and html code. Whatever i write in index.css override defaults styling in uibuilders standard c…

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## [Not quite understanding how httpAdminRoot works](https://discourse.nodered.org/t/not-quite-understanding-how-httpadminroot-works/85097)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 3\
**Last updated:** [1 February 2024 21:52 UTC](https://discourse.nodered.org/t/not-quite-understanding-how-httpadminroot-works/85097 "2024-02-01T21:52:36Z")

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Hi folks, I need to do a lot of catching up from other discussions, but first I need to finish an issue with my overal Node-RED setup... I need to setup a (Tailscale) reverse proxy that exposes Node-RED at some path "m…

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## [Problems accessing an object](https://discourse.nodered.org/t/problems-accessing-an-object/85125)

<div class="topic-metadata">

**Author:** [@FeliceM](https://discourse.nodered.org/u/FeliceM)\
**Replies:** 3\
**Last updated:** [1 February 2024 16:37 UTC](https://discourse.nodered.org/t/problems-accessing-an-object/85125 "2024-02-01T16:37:18Z")

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I am trying to get the data contained in the events in this object: If I copy the path of the first object (0: object) it gives me: area.info.events\[0\] But when I run the function: msg.payload = msg.area.info.event…

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## [Special adjustable Timer On/Off](https://discourse.nodered.org/t/special-adjustable-timer-on-off/85069)

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**Author:** [@Raspi133](https://discourse.nodered.org/u/Raspi133)\
**Replies:** 5\
**Last updated:** [1 February 2024 15:35 UTC](https://discourse.nodered.org/t/special-adjustable-timer-on-off/85069 "2024-02-01T15:35:24Z")

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Hi Experts, I work with Node-Red and dashboard and would like to setup an adjustable timer on Raspi 4 B hardware. I tried several attempts but without success so far. Goal: 1 Slider in dashboard should influence a on/…

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## [SONOFF Door sensor to pulse counter](https://discourse.nodered.org/t/sonoff-door-sensor-to-pulse-counter/85025)

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**Author:** [@bogi](https://discourse.nodered.org/u/bogi)\
**Replies:** 8\
**Last updated:** [1 February 2024 14:15 UTC](https://discourse.nodered.org/t/sonoff-door-sensor-to-pulse-counter/85025 "2024-02-01T14:15:55Z")

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Guys, i stuck here: using NodeRED in Homa Assisstant system (HAOS). I managed to implement zigbee2mqtt gateway so i can see temperature and humidity from on of the sonoff sensors. I have SONOFF door/window sensor as well…

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## [Crashed the system upon adding BLE nodes](https://discourse.nodered.org/t/crashed-the-system-upon-adding-ble-nodes/85095)

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**Author:** [@mikey](https://discourse.nodered.org/u/mikey)\
**Replies:** 2\
**Last updated:** [1 February 2024 12:12 UTC](https://discourse.nodered.org/t/crashed-the-system-upon-adding-ble-nodes/85095 "2024-02-01T12:12:00Z")

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im running node-red as a home assistant addon and was playing around downloading ble palettes when i crashed the system. Any and all help is welcome s6-rc: info: service s6rc-oneshot-runner: starting s6-rc: info: servic…

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## [Motion sensor light](https://discourse.nodered.org/t/motion-sensor-light/85073)

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**Author:** [@synatash](https://discourse.nodered.org/u/synatash)\
**Replies:** 1\
**Last updated:** [1 February 2024 10:03 UTC](https://discourse.nodered.org/t/motion-sensor-light/85073 "2024-02-01T10:03:11Z")

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Hello, I'm just starting to learn Node-Red, I have a zigbee motion sensor and a zigbee light switch, I want to do this: when motion was detected, the light turned on, the motion disappeared, the light turned off after …

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## [Back to my voice question from a couple of months back](https://discourse.nodered.org/t/back-to-my-voice-question-from-a-couple-of-months-back/85105)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 0\
**Last updated:** [1 February 2024 04:06 UTC](https://discourse.nodered.org/t/back-to-my-voice-question-from-a-couple-of-months-back/85105 "2024-02-01T04:06:12Z")

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Sorry folks, this is a twist I hadn't thought of. A while back I was using Watson TTS to give me audio but it was on THIS machine even though the TTS was done on ANOTHER machine. Anyway, skipping a bit: I got it work…

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## [Issues with Blockly 2.4.0](https://discourse.nodered.org/t/issues-with-blockly-2-4-0/84982)

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**Author:** [@magicman](https://discourse.nodered.org/u/magicman)\
**Replies:** 45\
**Last updated:** [31 January 2024 23:32 UTC](https://discourse.nodered.org/t/issues-with-blockly-2-4-0/84982 "2024-01-31T23:32:41Z")

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Hi , I have just installed Blockly 2.4.0 into my Node red and are have mouse issues with the node. If i click on any blockly item it moves into the workspace but then the block moves everywhere the mouse moves to , I c…

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## [Nodered Subpath for use with Traefik Proxy PathPrefix](https://discourse.nodered.org/t/nodered-subpath-for-use-with-traefik-proxy-pathprefix/85039)

<div class="topic-metadata">

**Author:** [@Con1924](https://discourse.nodered.org/u/Con1924)\
**Replies:** 3\
**Last updated:** [31 January 2024 20:28 UTC](https://discourse.nodered.org/t/nodered-subpath-for-use-with-traefik-proxy-pathprefix/85039 "2024-01-31T20:28:32Z")

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Is there a way to edit the nodered subpath URL? Ideally with docker compose environment variables. I'm use Traefik and want to expose nodered using PathPrefix So nodered would be available at subdomain.domain.com/noder…

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## [Https configuration](https://discourse.nodered.org/t/https-configuration/84967)

<div class="topic-metadata">

**Author:** [@dcaccount](https://discourse.nodered.org/u/dcaccount)\
**Replies:** 9\
**Last updated:** [31 January 2024 19:27 UTC](https://discourse.nodered.org/t/https-configuration/84967 "2024-01-31T19:27:00Z")

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Hello, following previous post and the advice got, I would like to enable https connection with Node-RED. I have already a certificate used for my webserver, the problem is that Node-RED has not been installed with sud…

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