# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1031

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

**Page:** 1032

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## [Display difficulty with pifacecad hat](https://discourse.nodered.org/t/display-difficulty-with-pifacecad-hat/30749)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 8\
**Last updated:** [27 July 2020 08:37 UTC](https://discourse.nodered.org/t/display-difficulty-with-pifacecad-hat/30749 "2020-07-27T08:37:05Z")

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I have one of these: PiFace CAD hat. It is a 2 x 16 LCD display. There is a node for it and I made it better in that you can specify where on the display the message is set. This is the basis of a new project I am ab…

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## [ReferenceError: fetch is not defined](https://discourse.nodered.org/t/referenceerror-fetch-is-not-defined/30757)

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**Author:** [@oguma](https://discourse.nodered.org/u/oguma)\
**Replies:** 3\
**Last updated:** [27 July 2020 08:21 UTC](https://discourse.nodered.org/t/referenceerror-fetch-is-not-defined/30757 "2020-07-27T08:21:21Z")

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I'm trying to use aws-sdk and aws-cognito-identity-js library with node-red-contrib-function-npm node. I have some questions. I wrote some code and executed but occurred ReferenceError: fetch is not defined Do you have…

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## [Ok, what is \*hysteresis\*?](https://discourse.nodered.org/t/ok-what-is-hysteresis/30425)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 22\
**Last updated:** [27 July 2020 08:02 UTC](https://discourse.nodered.org/t/ok-what-is-hysteresis/30425 "2020-07-27T08:02:23Z")

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I feel I have to ask. I was sort of helping someone with using it, but am not getting what it does. Say I have the lower/upper values at 16 / 24. If it gets an input of 2, that is way below the 16. Say the second inp…

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## [Moving node-RED - Failed to decrypt credentials](https://discourse.nodered.org/t/moving-node-red-failed-to-decrypt-credentials/17830)

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**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 34\
**Last updated:** [26 July 2020 19:35 UTC](https://discourse.nodered.org/t/moving-node-red-failed-to-decrypt-credentials/17830 "2020-07-26T19:35:54Z")

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Currently running node-RED on a local Raspberry Pi, and in the process of moving all flows etc to a Oracle VM. In the Pi, I've been using 'Projects', but in the VM I will not be using 'Projects'. So, I've created an ar…

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## [\[SUGGESTION\] Text Node (Dashboard)](https://discourse.nodered.org/t/suggestion-text-node-dashboard/30754)

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**Author:** [@SteveMann](https://discourse.nodered.org/u/SteveMann)\
**Replies:** 1\
**Last updated:** [27 July 2020 07:45 UTC](https://discourse.nodered.org/t/suggestion-text-node-dashboard/30754 "2020-07-27T07:45:58Z")

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Under Layout, I would like to see some "value-label" options. For example, if I am displaying temperature, the value would be the temperature and the label could be "°C".

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## [Topic names and editing](https://discourse.nodered.org/t/topic-names-and-editing/30755)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 7\
**Last updated:** [27 July 2020 07:33 UTC](https://discourse.nodered.org/t/topic-names-and-editing/30755 "2020-07-27T07:33:38Z")

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(Way off topic) Not that I mind too much, but a thought has arisen recently. I start a thread (post) on a subject. Other people can edit the ..... topic. I can't (and don't really want to) edit other people's thread …

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## [Where are these scripts hidden?](https://discourse.nodered.org/t/where-are-these-scripts-hidden/30747)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [27 July 2020 07:22 UTC](https://discourse.nodered.org/t/where-are-these-scripts-hidden/30747 "2020-07-27T07:22:57Z")

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I am messing around with python (yeah, I know: Off topic) but it is used in a node/ by a node. The code is: (or sorry: more starts out with) # import pifacecad import sys I am not sure the first line is correct or i…

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## [Dashboard - theme: chart and ui-table](https://discourse.nodered.org/t/dashboard-theme-chart-and-ui-table/30332)

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**Author:** [@hklages](https://discourse.nodered.org/u/hklages)\
**Replies:** 18\
**Last updated:** [27 July 2020 05:56 UTC](https://discourse.nodered.org/t/dashboard-theme-chart-and-ui-table/30332 "2020-07-27T05:56:56Z")

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I changed the dashboard theme from light to dark. Most of the elements follow the given color schemes. ui-table: does keeps the original color. Is there any "trick" to move all u-tables from light to dark scheme? chart…

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## [How do I find a node on my machine?](https://discourse.nodered.org/t/how-do-i-find-a-node-on-my-machine/30746)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 8\
**Last updated:** [27 July 2020 05:49 UTC](https://discourse.nodered.org/t/how-do-i-find-a-node-on-my-machine/30746 "2020-07-27T05:49:00Z")

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I'm on a quest. In the left of the screen I see a node. Alas its name isn't congruent with what it really is. How do I find this node in the CLI? I want to go in and edit it. I have done this before but can't reme…

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## [Line follower robot](https://discourse.nodered.org/t/line-follower-robot/30753)

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**Author:** [@Cmilian](https://discourse.nodered.org/u/Cmilian)\
**Replies:** 0\
**Last updated:** [27 July 2020 03:47 UTC](https://discourse.nodered.org/t/line-follower-robot/30753 "2020-07-27T03:47:30Z")

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Is there an example to build a line follower robot with Node Red?

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## [Odd dashboard sidebar behavior when switching projects](https://discourse.nodered.org/t/odd-dashboard-sidebar-behavior-when-switching-projects/30751)

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**Author:** [@johnwalicki](https://discourse.nodered.org/u/johnwalicki)\
**Replies:** 0\
**Last updated:** [27 July 2020 02:41 UTC](https://discourse.nodered.org/t/odd-dashboard-sidebar-behavior-when-switching-projects/30751 "2020-07-27T02:41:36Z")

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Several times I have noticed that the dashboard sidebar does not correctly refresh when I switch between Node-RED projects. If both projects have many dashboards, I see both sets of dashboard layouts in the sidebar. I …

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## [Open with node palette collapsed](https://discourse.nodered.org/t/open-with-node-palette-collapsed/30750)

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**Author:** [@LosinIt](https://discourse.nodered.org/u/LosinIt)\
**Replies:** 0\
**Last updated:** [27 July 2020 02:21 UTC](https://discourse.nodered.org/t/open-with-node-palette-collapsed/30750 "2020-07-27T02:21:38Z")

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I'd like to see the option to have the node palette collapsed when opening a browser to a node-red instance. Better yet would be restoring the palette state from the last time. Thanks

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## [Moment "fromNow" functionality](https://discourse.nodered.org/t/moment-fromnow-functionality/30743)

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**Author:** [@lscarneiro](https://discourse.nodered.org/u/lscarneiro)\
**Replies:** 4\
**Last updated:** [26 July 2020 22:18 UTC](https://discourse.nodered.org/t/moment-fromnow-functionality/30743 "2020-07-26T22:18:21Z")

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I'm trying to show time like "fromNow" feature from "moment", so "a few seconds ago", "2 minutes ago" and such. Ideally, it would be nice to use it in template nodes as well, is there anything like it? The only way I c…

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## [Raspberry Pi 4 - root user](https://discourse.nodered.org/t/raspberry-pi-4-root-user/30609)

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**Author:** [@jfk](https://discourse.nodered.org/u/jfk)\
**Replies:** 2\
**Last updated:** [26 July 2020 21:42 UTC](https://discourse.nodered.org/t/raspberry-pi-4-root-user/30609 "2020-07-26T21:42:25Z")

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Can anyone tell me why this would be occurring intermittently? When it does data continues to flow to all but the HAT display I noticed as well that the HAT nodes would display "disconnected" from time to time, to me wi…

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## [Monitoring devices](https://discourse.nodered.org/t/monitoring-devices/30742)

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**Author:** [@federicobalm](https://discourse.nodered.org/u/federicobalm)\
**Replies:** 12\
**Last updated:** [26 July 2020 21:14 UTC](https://discourse.nodered.org/t/monitoring-devices/30742 "2020-07-26T21:14:48Z")

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Hello everyone !! I hope you can help me, I am taking my first steps in the world of noder-red and I am looking forward to making a dashboard for monitoring the IP devices that I have in the offices of my work. Basical…

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## [Anomalous behaviour - Batch Node](https://discourse.nodered.org/t/anomalous-behaviour-batch-node/30741)

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**Author:** [@ghayne](https://discourse.nodered.org/u/ghayne)\
**Replies:** 4\
**Last updated:** [26 July 2020 21:07 UTC](https://discourse.nodered.org/t/anomalous-behaviour-batch-node/30741 "2020-07-26T21:07:19Z")

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v1.1.2 I'm seeing some strange behaviour from the batch node. I am trying to do a sliding window calculation on an array and getting some strange results when I change the nodes parameters. After changing the paramete…

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## [Example of Bond Bridge Device Control](https://discourse.nodered.org/t/example-of-bond-bridge-device-control/30740)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 0\
**Last updated:** [26 July 2020 19:07 UTC](https://discourse.nodered.org/t/example-of-bond-bridge-device-control/30740 "2020-07-26T19:07:52Z")

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I was going to do this solution as a custom node, but then considered that over kill once I had this flow established. For those that are not familiar with a bond bridge, it is a WiFi bridge that provides direct control…

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## [HTTP request help](https://discourse.nodered.org/t/http-request-help/30735)

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**Author:** [@danfox52](https://discourse.nodered.org/u/danfox52)\
**Replies:** 1\
**Last updated:** [26 July 2020 17:45 UTC](https://discourse.nodered.org/t/http-request-help/30735 "2020-07-26T17:45:26Z")

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I'm hoping someone can help me with a HTTP request I am using iSpy Agent DVR for my cameras. They have an API that lets me control the cameras. If I use the command http://192.168.4.213:8090/command.cgi?cmd=setProfile&i…

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## [Problem with flow-variables](https://discourse.nodered.org/t/problem-with-flow-variables/30734)

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**Author:** [@Spunckie](https://discourse.nodered.org/u/Spunckie)\
**Replies:** 8\
**Last updated:** [26 July 2020 17:41 UTC](https://discourse.nodered.org/t/problem-with-flow-variables/30734 "2020-07-26T17:41:33Z")

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I want to start a flow for all items in an array. This works fine as long as I don't use flow.set oder flow.get-statement. A debug-note after the function-node that start the flow for all Items shows the right msg.payloa…

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## [How to use the class property in the TreeList widget](https://discourse.nodered.org/t/how-to-use-the-class-property-in-the-treelist-widget/30717)

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**Author:** [@Christian-Me](https://discourse.nodered.org/u/Christian-Me)\
**Replies:** 1\
**Last updated:** [26 July 2020 15:54 UTC](https://discourse.nodered.org/t/how-to-use-the-class-property-in-the-treelist-widget/30717 "2020-07-26T15:54:39Z")

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Hi, I believe this is a simple question for somebody with more knowledge in css as I have. I use the TreeList widget in one of my custom nodes: Now I like to highlight certain elements/lines by changing the backgrou…

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## [Node-red-contrib-telegrambot slows down deployment?](https://discourse.nodered.org/t/node-red-contrib-telegrambot-slows-down-deployment/30596)

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**Author:** [@martynwheeler](https://discourse.nodered.org/u/martynwheeler)\
**Replies:** 17\
**Last updated:** [26 July 2020 15:39 UTC](https://discourse.nodered.org/t/node-red-contrib-telegrambot-slows-down-deployment/30596 "2020-07-26T15:39:52Z")

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Hi, I was wondering if anyone else notices a significant slowing down of deployment when they have a node-red-contrib-telegrambot node in their flow? It adds a few seconds to redeployment when I make a change. If I di…

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## [Making Sense of Syslog Messages](https://discourse.nodered.org/t/making-sense-of-syslog-messages/30679)

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**Author:** [@Paulf007](https://discourse.nodered.org/u/Paulf007)\
**Replies:** 21\
**Last updated:** [26 July 2020 14:33 UTC](https://discourse.nodered.org/t/making-sense-of-syslog-messages/30679 "2020-07-26T14:33:58Z")

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My first problem is that Node-red sort off randomly restarts every day some times once sometimes more times have a look at the log Node Red System Startup at Jul 13, 2020, 2:40 AM Node Red System Startup at Jul 14, 2020…

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## [Modbus TCP variable split function code](https://discourse.nodered.org/t/modbus-tcp-variable-split-function-code/30684)

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**Author:** [@nmwakde](https://discourse.nodered.org/u/nmwakde)\
**Replies:** 5\
**Last updated:** [26 July 2020 12:56 UTC](https://discourse.nodered.org/t/modbus-tcp-variable-split-function-code/30684 "2020-07-26T12:56:38Z")

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Hi !! what should be the function code to split Modbus read registers in Fred cloud. I am able to read all the 10 registers in debug Messages in Fred cloud but unable to write function code to split the values to read …

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## [Error: No compatible USB Bluetooth 4.0 device found!](https://discourse.nodered.org/t/error-no-compatible-usb-bluetooth-4-0-device-found/30727)

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**Author:** [@christian\_ep](https://discourse.nodered.org/u/christian_ep)\
**Replies:** 0\
**Last updated:** [26 July 2020 12:47 UTC](https://discourse.nodered.org/t/error-no-compatible-usb-bluetooth-4-0-device-found/30727 "2020-07-26T12:47:39Z")

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Hello together, I try to start node-red on my win 10 surface 6. All seems pretty installed but on starting node red i get this error and it doesn´t start. The surface supports LMP 8.37 ... means Bluetooth 4.2. But I get …

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## [Setting headers with "HTTP Response" node](https://discourse.nodered.org/t/setting-headers-with-http-response-node/30719)

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**Author:** [@augjoh](https://discourse.nodered.org/u/augjoh)\
**Replies:** 2\
**Last updated:** [26 July 2020 11:37 UTC](https://discourse.nodered.org/t/setting-headers-with-http-response-node/30719 "2020-07-26T11:37:12Z")

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Our project aims to implement ACMEv2 (RFC8555). This RFC requires to set multiple HTTP-headers with the same key (Link:) value. The following example is taken from RFC8555 7.1.2.1: HTTP/1.1 200 OK Content-Type: ap…

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## [RSS Creation in NODERED](https://discourse.nodered.org/t/rss-creation-in-nodered/30714)

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**Author:** [@MAaron](https://discourse.nodered.org/u/MAaron)\
**Replies:** 1\
**Last updated:** [26 July 2020 10:33 UTC](https://discourse.nodered.org/t/rss-creation-in-nodered/30714 "2020-07-26T10:33:20Z")

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Hi there! I would like to create an own RSS feed, containing magnet links, something like on showrss.info . But I want to be able to add a new item entry to this RSS feed from my phone. None of these 2 processes I kno…

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## [Mqtt out node buffering](https://discourse.nodered.org/t/mqtt-out-node-buffering/29099)

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**Author:** [@juntiedt](https://discourse.nodered.org/u/juntiedt)\
**Replies:** 23\
**Last updated:** [26 July 2020 10:02 UTC](https://discourse.nodered.org/t/mqtt-out-node-buffering/29099 "2020-07-26T10:02:23Z")

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how many one-wire messages can a mqtt out node buffer if the network connection is down? What happens, if the buffer is full? It seems, that not only node-red is impacted but also the operating system of my Raspi. Only …

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## [Retrieving status of pre-defined nodes](https://discourse.nodered.org/t/retrieving-status-of-pre-defined-nodes/30642)

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**Author:** [@gioza](https://discourse.nodered.org/u/gioza)\
**Replies:** 8\
**Last updated:** [26 July 2020 09:58 UTC](https://discourse.nodered.org/t/retrieving-status-of-pre-defined-nodes/30642 "2020-07-26T09:58:00Z")

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Good day everyone. I have looked around and could not find any reasonable solutions (apologies). What I'm trying to do is try and retrieve the status of each specific nodes in a subflow, and modify the payload message …

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## [Alternatives to Raspberry Pi?](https://discourse.nodered.org/t/alternatives-to-raspberry-pi/30678)

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**Author:** [@dr\_cave\_dweller](https://discourse.nodered.org/u/dr_cave_dweller)\
**Replies:** 11\
**Last updated:** [26 July 2020 07:54 UTC](https://discourse.nodered.org/t/alternatives-to-raspberry-pi/30678 "2020-07-26T07:54:57Z")

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Hi all, I am looking for some Linux alternatives to Raspberry Pi/Raspbian that are known to be able to run Node-Red. Currently using a Raspberry Pi 4 with 4GB RAM and it is fine, but it is a bit "hobbyist' and I want t…

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## [⚠️ Update npm to v6.13.4](https://discourse.nodered.org/t/update-npm-to-v6-13-4/19062)

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**Author:** [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Replies:** 24\
**Last updated:** [26 July 2020 07:57 UTC](https://discourse.nodered.org/t/update-npm-to-v6-13-4/19062 "2020-07-26T07:57:15Z")

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The npm team have released a new version that addresses a serious security issue. Please take a moment to update npm:

[Previous page](https://discourse.nodered.org/latest.md?page=1030)

[Next page](https://discourse.nodered.org/latest.md?page=1032)