# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=473

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

**Page:** 474

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## [Self Signed Cert in FTP node](https://discourse.nodered.org/t/self-signed-cert-in-ftp-node/53196)

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**Author:** [@RettSan25](https://discourse.nodered.org/u/RettSan25)\
**Replies:** 0\
**Last updated:** [4 November 2021 08:15 UTC](https://discourse.nodered.org/t/self-signed-cert-in-ftp-node/53196 "2021-11-04T08:15:09Z")

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Dear NodeRED users and thanks to all developers, I would like to use the FTP node from the package node-red-contrib-advanced-ftp but I got the feedback error because of an self signed certificate Do anyone knows what I…

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## [Set up raspberry pi](https://discourse.nodered.org/t/set-up-raspberry-pi/53188)

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**Author:** [@davenrea](https://discourse.nodered.org/u/davenrea)\
**Replies:** 3\
**Last updated:** [3 November 2021 21:42 UTC](https://discourse.nodered.org/t/set-up-raspberry-pi/53188 "2021-11-03T21:42:32Z")

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Hi All I backup my flows on 4 Pi's via email everynight, I would like to be able to have a single image on an SD card with an initial address ie 192,168.1.1 and port 1880. When I go to that address i want to be able to …

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## [Running node-red and using putty](https://discourse.nodered.org/t/running-node-red-and-using-putty/53181)

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**Author:** [@traderjoe](https://discourse.nodered.org/u/traderjoe)\
**Replies:** 5\
**Last updated:** [3 November 2021 21:02 UTC](https://discourse.nodered.org/t/running-node-red-and-using-putty/53181 "2021-11-03T21:02:54Z")

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Simple problem here: I'm running node-red on a raspberry pi. I putty in and I start up my node-red. How do I use the SSH to do something else now? After staring up node-red, it doesn't go back to the prompt. I can't…

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## [Use message value to build JSONata expression](https://discourse.nodered.org/t/use-message-value-to-build-jsonata-expression/53177)

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**Author:** [@B14702](https://discourse.nodered.org/u/B14702)\
**Replies:** 10\
**Last updated:** [3 November 2021 18:34 UTC](https://discourse.nodered.org/t/use-message-value-to-build-jsonata-expression/53177 "2021-11-03T18:34:28Z")

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Hi All, Long time fan first time poster, love the project fantastic piece of kit. I've run into a problem that I can't get past despite dredging through the forums. I'm trying to put data from multiple sql tables into…

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## [How two instances can communiate to each other in docker](https://discourse.nodered.org/t/how-two-instances-can-communiate-to-each-other-in-docker/52781)

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**Author:** [@oualid](https://discourse.nodered.org/u/oualid)\
**Replies:** 4\
**Last updated:** [3 November 2021 18:30 UTC](https://discourse.nodered.org/t/how-two-instances-can-communiate-to-each-other-in-docker/52781 "2021-11-03T18:30:07Z")

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hi, I already create two instances under Docker -p 1881:1880 and -p 1884:1880. Now, i want that each one can send and receive a msgs to other instance. Could you please help me to do that ? In my machine, i use OPC-UA …

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## [Rate limiting based on exec node completion](https://discourse.nodered.org/t/rate-limiting-based-on-exec-node-completion/53115)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 43\
**Last updated:** [3 November 2021 17:13 UTC](https://discourse.nodered.org/t/rate-limiting-based-on-exec-node-completion/53115 "2021-11-03T17:13:24Z")

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In my NR -\> Alexa project, I want to add rate limiting type behaviour so that messages are queued and only processed if the previous one has actually been spoken out. i.e only want messages passed into pico2wave if la…

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## [FFT - Has anyone ever used it?](https://discourse.nodered.org/t/fft-has-anyone-ever-used-it/51476)

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**Author:** [@chris\_ireland](https://discourse.nodered.org/u/chris_ireland)\
**Replies:** 13\
**Last updated:** [3 November 2021 17:00 UTC](https://discourse.nodered.org/t/fft-has-anyone-ever-used-it/51476 "2021-11-03T17:00:44Z")

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Hi, I am hoping to use the FFT node - node-red-contrib-fft It requires data in a certain format as follows: { "data" : \[ {"accelerometer\_x" : 9 , "accelerometer\_y":2, "accelerometer\_z":2}, {"accelerometer\_x" : 7 , "…

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## [MiR robot integration with Node Red](https://discourse.nodered.org/t/mir-robot-integration-with-node-red/53175)

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**Author:** [@Alberto\_Yushin](https://discourse.nodered.org/u/Alberto_Yushin)\
**Replies:** 0\
**Last updated:** [3 November 2021 14:20 UTC](https://discourse.nodered.org/t/mir-robot-integration-with-node-red/53175 "2021-11-03T14:20:30Z")

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Hi all, I'm new to the forum and to Node Red, I'm trying to develop a manufacturing process using Node Red, so far I managed to communicate to an UR robot and an Allen Bradley plc but I need to communicate to a MiR robo…

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## [Node-red-node-discovery on Raspberry pi](https://discourse.nodered.org/t/node-red-node-discovery-on-raspberry-pi/53017)

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**Author:** [@chrisofCCL](https://discourse.nodered.org/u/chrisofCCL)\
**Replies:** 7\
**Last updated:** [3 November 2021 16:19 UTC](https://discourse.nodered.org/t/node-red-node-discovery-on-raspberry-pi/53017 "2021-11-03T16:19:35Z")

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I'm using this node on 2x Ubuntu machines and have spent the afternoon trying to get it installed on my Pi. All the pre-requisites are installed but I get the the following long list of errors. Any ideas anyone? 2021-…

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## [Wait until node](https://discourse.nodered.org/t/wait-until-node/53172)

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**Author:** [@terminus](https://discourse.nodered.org/u/terminus)\
**Replies:** 4\
**Last updated:** [3 November 2021 14:14 UTC](https://discourse.nodered.org/t/wait-until-node/53172 "2021-11-03T14:14:34Z")

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I have a question on the "wait until" node: Idea is that a message goes in the wait until node and activates it. Now the node should wait until a binary sensor turns its state to true (on) and then it should pass the me…

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## [Running Python in node-red](https://discourse.nodered.org/t/running-python-in-node-red/53078)

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**Author:** [@sd\_dracula](https://discourse.nodered.org/u/sd_dracula)\
**Replies:** 18\
**Last updated:** [3 November 2021 13:56 UTC](https://discourse.nodered.org/t/running-python-in-node-red/53078 "2021-11-03T13:56:33Z")

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I have a script as follows: #!/usr/bin/python3 # Script gathering product data from Sofar Solar Inverter (K-TLX) via WiFi logger module LSW-3 # by Michalux import sys import socket import binascii import libscrc import…

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## [Calculating Time / Washing Machine Notification](https://discourse.nodered.org/t/calculating-time-washing-machine-notification/53166)

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**Author:** [@terminus](https://discourse.nodered.org/u/terminus)\
**Replies:** 9\
**Last updated:** [3 November 2021 12:16 UTC](https://discourse.nodered.org/t/calculating-time-washing-machine-notification/53166 "2021-11-03T12:16:29Z")

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Hey Guys! Im trying to get a notification 10 minutes before my washing machine is finishing. There was a remaining time sensor in the past (siemens home connect) but it isn't there anymore. The only sensor left, is a se…

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## [Storage API support for Projects](https://discourse.nodered.org/t/storage-api-support-for-projects/53152)

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**Author:** [@AbdulRahman](https://discourse.nodered.org/u/AbdulRahman)\
**Replies:** 2\
**Last updated:** [3 November 2021 11:46 UTC](https://discourse.nodered.org/t/storage-api-support-for-projects/53152 "2021-11-03T11:46:49Z")

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Summary: Storing projects in AWS s3. Issue: Whenever external storageModule is used, Projects API is returning 404. settings.js projects: { enabled: true, workflow: { mode: "manual" }, }, storag…

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## [Node-red electron JS error](https://discourse.nodered.org/t/node-red-electron-js-error/53163)

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**Author:** [@iungo](https://discourse.nodered.org/u/iungo)\
**Replies:** 0\
**Last updated:** [3 November 2021 10:13 UTC](https://discourse.nodered.org/t/node-red-electron-js-error/53163 "2021-11-03T10:13:12Z")

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I tried to build node-red package using instructions on this page - GitHub - natcl/electron-node-red: Electron Node-RED template When I'm trying to start Node-RED.exe file i got this error. Maybe somebody know what …

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## [Upgrade of Node.js V16 breaks nodes that use i2c - comm library related?](https://discourse.nodered.org/t/upgrade-of-node-js-v16-breaks-nodes-that-use-i2c-comm-library-related/53148)

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**Author:** [@SonoraTechnical](https://discourse.nodered.org/u/SonoraTechnical)\
**Replies:** 7\
**Last updated:** [3 November 2021 08:57 UTC](https://discourse.nodered.org/t/upgrade-of-node-js-v16-breaks-nodes-that-use-i2c-comm-library-related/53148 "2021-11-03T08:57:28Z")

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I have an application in my homse where I employ two identical RaspberryPi4Bs that run the same exact Flows. 1 of them is in production (rpi4b-prod), 1 of them is the guinea pig (rpi4b-dev) for trying out upgrades to fi…

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## [Deploy Menu NodeRED](https://discourse.nodered.org/t/deploy-menu-nodered/53154)

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**Author:** [@marcboy](https://discourse.nodered.org/u/marcboy)\
**Replies:** 0\
**Last updated:** [3 November 2021 06:26 UTC](https://discourse.nodered.org/t/deploy-menu-nodered/53154 "2021-11-03T06:26:18Z")

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Hey there, I'm thinking of a solution to display only 1 option in the NodeRED Deployment button. E.g. it should only show: "only deploy changed nodes". The default setting for the button is "deploy changed flows". My p…

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## [Monaco editor does not allow subraction of dates](https://discourse.nodered.org/t/monaco-editor-does-not-allow-subraction-of-dates/53052)

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**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 6\
**Last updated:** [2 November 2021 21:40 UTC](https://discourse.nodered.org/t/monaco-editor-does-not-allow-subraction-of-dates/53052 "2021-11-02T21:40:01Z")

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I am not sure where to report this. When using the Monaco editor this code, in a function node, generates an error. const d1 = new Date() const d2 = new Date(d1.getTime() + 1000) msg.payload = d2 - d1 return msg; Hove…

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## [Problem with socket.io in react app](https://discourse.nodered.org/t/problem-with-socket-io-in-react-app/53136)

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**Author:** [@christianAmb](https://discourse.nodered.org/u/christianAmb)\
**Replies:** 2\
**Last updated:** [2 November 2021 20:22 UTC](https://discourse.nodered.org/t/problem-with-socket-io-in-react-app/53136 "2021-11-02T20:22:19Z")

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Hi, I have a problem with getting react ui to work with uibuilder. At first I tried to build my own react app and then add uibuilders functionality to connect to node-red but when I tried to use uibuilder.start() functio…

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## [Offline install of node red for windows server 2019](https://discourse.nodered.org/t/offline-install-of-node-red-for-windows-server-2019/53140)

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**Author:** [@bigunwhistle](https://discourse.nodered.org/u/bigunwhistle)\
**Replies:** 1\
**Last updated:** [2 November 2021 20:16 UTC](https://discourse.nodered.org/t/offline-install-of-node-red-for-windows-server-2019/53140 "2021-11-02T20:16:01Z")

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So I'm trying to install node-red to a windows server 2019 instance. It doesn't have internet access and I can't install it on another computer and copy it over. Is there anyway to install this offline.

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## [Unexpected behaviour with link call](https://discourse.nodered.org/t/unexpected-behaviour-with-link-call/53133)

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**Author:** [@Edo78](https://discourse.nodered.org/u/Edo78)\
**Replies:** 2\
**Last updated:** [2 November 2021 16:49 UTC](https://discourse.nodered.org/t/unexpected-behaviour-with-link-call/53133 "2021-11-02T16:49:09Z")

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I'm not sure if I'm missing something or if it's a bug so I'd ask before opening an issue. This simple example show the issue. If the link out node is set to Send to all connected link nodes the flow doesn't works and …

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## [Fail to update node-red-contrib-hikvision-ultimate](https://discourse.nodered.org/t/fail-to-update-node-red-contrib-hikvision-ultimate/53091)

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**Author:** [@janwolf](https://discourse.nodered.org/u/janwolf)\
**Replies:** 4\
**Last updated:** [2 November 2021 16:33 UTC](https://discourse.nodered.org/t/fail-to-update-node-red-contrib-hikvision-ultimate/53091 "2021-11-02T16:33:01Z")

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I fail to update node-red-contrib-hikvision-ultimate on my node-red 2.1.3 server. I get these log traces : 2021-11-01T21:03:24.338Z Install : node-red-contrib-hikvision-ultimate 1.0.55 2021-11-01T21:03:01.415Z npm inst…

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## [Is there any way to permanently set USB0 to one node and USB1 to different node?](https://discourse.nodered.org/t/is-there-any-way-to-permanently-set-usb0-to-one-node-and-usb1-to-different-node/52787)

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**Author:** [@ButsonJ](https://discourse.nodered.org/u/ButsonJ)\
**Replies:** 22\
**Last updated:** [2 November 2021 15:31 UTC](https://discourse.nodered.org/t/is-there-any-way-to-permanently-set-usb0-to-one-node-and-usb1-to-different-node/52787 "2021-11-02T15:31:27Z")

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Hi all, I have node red setup on a raspberry pi4b. Everything works, but the usb to serial connection. In the raspberry pi I specified each usb in by adding their attributes to the 10-usb-serial.rules file. I can ident…

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## [Error: connect EHOSTUNREACH 172.xx.xx.xx:8086 while connecting to influxdb](https://discourse.nodered.org/t/error-connect-ehostunreach-172-xx-xx-xx-8086-while-connecting-to-influxdb/53119)

<div class="topic-metadata">

**Author:** [@cyntia](https://discourse.nodered.org/u/cyntia)\
**Replies:** 5\
**Last updated:** [2 November 2021 14:57 UTC](https://discourse.nodered.org/t/error-connect-ehostunreach-172-xx-xx-xx-8086-while-connecting-to-influxdb/53119 "2021-11-02T14:57:32Z")

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I configured everything correctly i think but i always receive this notification: Error: connect EHOSTUNREACH 172.xx.xx.xx:8086 while trying to connect to my influxdb

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## [2.0.6 shows different node errors in different languages](https://discourse.nodered.org/t/2-0-6-shows-different-node-errors-in-different-languages/51693)

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**Author:** [@thebaldgeek](https://discourse.nodered.org/u/thebaldgeek)\
**Replies:** 15\
**Last updated:** [2 November 2021 13:56 UTC](https://discourse.nodered.org/t/2-0-6-shows-different-node-errors-in-different-languages/51693 "2021-11-02T13:56:17Z")

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Not a huge issue, but..... Since updating to 2.0.6 I am finding different nodes throw different errors in different languages (other than my PC's native English). I have seen either Chinese or Japanese characters (I'm n…

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## [Cannot GET error handler](https://discourse.nodered.org/t/cannot-get-error-handler/53106)

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**Author:** [@RootShell-coder](https://discourse.nodered.org/u/RootShell-coder)\
**Replies:** 3\
**Last updated:** [2 November 2021 12:46 UTC](https://discourse.nodered.org/t/cannot-get-error-handler/53106 "2021-11-02T12:46:06Z")

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I want to customize my error handler (Cannot GET / error 404). How can i do this?

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## [Uibuilder - who is connected?](https://discourse.nodered.org/t/uibuilder-who-is-connected/53092)

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**Author:** [@alex88](https://discourse.nodered.org/u/alex88)\
**Replies:** 1\
**Last updated:** [2 November 2021 10:56 UTC](https://discourse.nodered.org/t/uibuilder-who-is-connected/53092 "2021-11-02T10:56:44Z")

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Hi @TotallyInformation I was looking at my uibuilder node the other day and noticed there were 27 connections, so I went and closed down all the chrome browsers on my pc's pointing to my uibuilder pages and also closed …

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## [How do I check the state of a GPIO pin on startup?](https://discourse.nodered.org/t/how-do-i-check-the-state-of-a-gpio-pin-on-startup/52864)

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**Author:** [@Mastiff](https://discourse.nodered.org/u/Mastiff)\
**Replies:** 8\
**Last updated:** [2 November 2021 07:29 UTC](https://discourse.nodered.org/t/how-do-i-check-the-state-of-a-gpio-pin-on-startup/52864 "2021-11-02T07:29:45Z")

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I have a pin connection on the Pi 4 (ground to pin 35 in node-red-node-pi-gpio) that will be driven by a relay, so when the relay closes media playback starts, and when it opens, playback stops. The problem is on startup…

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## [Trouble connecting to Home assistant (docker)](https://discourse.nodered.org/t/trouble-connecting-to-home-assistant-docker/52973)

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**Author:** [@Jiheffe](https://discourse.nodered.org/u/Jiheffe)\
**Replies:** 11\
**Last updated:** [2 November 2021 01:19 UTC](https://discourse.nodered.org/t/trouble-connecting-to-home-assistant-docker/52973 "2021-11-02T01:19:25Z")

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Hi, I am at my wits end trying to get Node-RED connected to Home Assistant server. I have HA and NR running in docker containers on a NUC. These are the docker-compose.yml files for both: version: "3" services: home…

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## [Sqlitedb Problem](https://discourse.nodered.org/t/sqlitedb-problem/53104)

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**Author:** [@Joej](https://discourse.nodered.org/u/Joej)\
**Replies:** 2\
**Last updated:** [2 November 2021 00:16 UTC](https://discourse.nodered.org/t/sqlitedb-problem/53104 "2021-11-02T00:16:01Z")

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Hi, Yesterday, I imported a flow just to see how it was configured, and then deleted it. Now, I have the error and I cannot deploy anything: "Flows stopped due to missing node types. sqlitedb". How can I get rid of t…

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## [Node-Red, RasperrbyPI and Adafruit RFM95W COMMS](https://discourse.nodered.org/t/node-red-rasperrbypi-and-adafruit-rfm95w-comms/53107)

<div class="topic-metadata">

**Author:** [@DrdP](https://discourse.nodered.org/u/DrdP)\
**Replies:** 0\
**Last updated:** [2 November 2021 00:12 UTC](https://discourse.nodered.org/t/node-red-rasperrbypi-and-adafruit-rfm95w-comms/53107 "2021-11-02T00:12:55Z")

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Good day, I have 2 RaspberryPis with a Lora RFM95X radio bonnet on each. I have succesfully got the communication going between the the radio/PIs. My question is how can I send data across between the two without pushin…

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