# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1173

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

**Page:** 1174

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## [Simple node Problem](https://discourse.nodered.org/t/simple-node-problem/20471)

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**Author:** [@corin.corvus](https://discourse.nodered.org/u/corin.corvus)\
**Replies:** 8\
**Last updated:** [16 January 2020 20:47 UTC](https://discourse.nodered.org/t/simple-node-problem/20471 "2020-01-16T20:47:48Z")

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Hi, i am a very new user with node-red. i tried to create an easy flow. Plan: if the lamp is on, the energy switch go on, the lamp is of, the switch go off. \[{"id":"74f43ebb.4b4358","type":"tab","label":"Flow 2","di…

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## [Change Node - Understanding data manipulation](https://discourse.nodered.org/t/change-node-understanding-data-manipulation/20421)

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**Author:** [@patrick1](https://discourse.nodered.org/u/patrick1)\
**Replies:** 3\
**Last updated:** [16 January 2020 20:40 UTC](https://discourse.nodered.org/t/change-node-understanding-data-manipulation/20421 "2020-01-16T20:40:35Z")

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I am pretty sure this is a simple question, I just can't wrap my head around JSON or expression to get it to do what I want. And I havent found a post or information on the node to help me. I have successfully input MQ…

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## [Jetson Nano Dev Chat](https://discourse.nodered.org/t/jetson-nano-dev-chat/20346)

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**Author:** [@Odiezapha](https://discourse.nodered.org/u/Odiezapha)\
**Replies:** 14\
**Last updated:** [16 January 2020 18:06 UTC](https://discourse.nodered.org/t/jetson-nano-dev-chat/20346 "2020-01-16T18:06:02Z")

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Hey, Everyone. New to the group but I wanted to get the ball rolling. So using a Jetson Nano can be tricky. SO I figured this would be a great place to start up a chat and share our knowledge and ideas. All the best, …

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## [Access interface android from PC](https://discourse.nodered.org/t/access-interface-android-from-pc/19600)

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**Author:** [@Lyes16](https://discourse.nodered.org/u/Lyes16)\
**Replies:** 5\
**Last updated:** [16 January 2020 15:21 UTC](https://discourse.nodered.org/t/access-interface-android-from-pc/19600 "2020-01-16T15:21:39Z")

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I just used the RED-MOBILE application on Android, to display the interface created there is on the dashboard list is there a possibility to display the interface on PC? to create the interface I use localhoste: 1880 / …

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## [Access msg object in dashboard ui\_template](https://discourse.nodered.org/t/access-msg-object-in-dashboard-ui-template/5502)

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**Author:** [@JayGhb](https://discourse.nodered.org/u/JayGhb)\
**Replies:** 15\
**Last updated:** [16 January 2020 14:16 UTC](https://discourse.nodered.org/t/access-msg-object-in-dashboard-ui-template/5502 "2020-01-16T14:16:22Z")

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Hi, I have implemented a Google Maps interface using ui\_template node with some functionality. Next step for me is to load the markers from a database, as they are currently hardcoded. I figured that this would be possi…

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## [LED Blink on receiving any payload](https://discourse.nodered.org/t/led-blink-on-receiving-any-payload/20321)

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**Author:** [@acestu](https://discourse.nodered.org/u/acestu)\
**Replies:** 3\
**Last updated:** [16 January 2020 14:13 UTC](https://discourse.nodered.org/t/led-blink-on-receiving-any-payload/20321 "2020-01-16T14:13:23Z")

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Hi, I was wondering if someone could help me add an LED on the dashboard that would blink when it receives any payload which is connected to a MQTT in node ? Thanks In Advance Stuart

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## [Node Slider Bug at 0.1 step only on release?](https://discourse.nodered.org/t/node-slider-bug-at-0-1-step-only-on-release/20390)

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**Author:** [@Tejota](https://discourse.nodered.org/u/Tejota)\
**Replies:** 5\
**Last updated:** [16 January 2020 13:55 UTC](https://discourse.nodered.org/t/node-slider-bug-at-0-1-step-only-on-release/20390 "2020-01-16T13:55:45Z")

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Hi. Node slider send two values at 0.1 step only on release. \[{"id":"9edcb632.bf91d8","type":"ui\_slider","z":"922b3bfe.c981c8","name":"","label":"slider","tooltip":"","group":"7c9bfa11.94ec94","order":1,"width":0,"heig…

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## [Memory Leak - Troubleshooting](https://discourse.nodered.org/t/memory-leak-troubleshooting/20389)

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**Author:** [@michaelparsche](https://discourse.nodered.org/u/michaelparsche)\
**Replies:** 8\
**Last updated:** [16 January 2020 13:54 UTC](https://discourse.nodered.org/t/memory-leak-troubleshooting/20389 "2020-01-16T13:54:19Z")

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I am using the Node-RED running in a Docker container on Ubuntu. When Node-Red starts it consumes about 2.6GB of memory, then in less than 24 hours it is up to 5.95GB (which is near the maximum available). I think there …

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## [Node-RED dashboard on raspberry pi lcd](https://discourse.nodered.org/t/node-red-dashboard-on-raspberry-pi-lcd/20379)

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**Author:** [@salguero98](https://discourse.nodered.org/u/salguero98)\
**Replies:** 3\
**Last updated:** [16 January 2020 12:43 UTC](https://discourse.nodered.org/t/node-red-dashboard-on-raspberry-pi-lcd/20379 "2020-01-16T12:43:57Z")

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hello can someone help me to make the dashboard full screen? thanks

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## [Https file server on nodered+IBM cloud](https://discourse.nodered.org/t/https-file-server-on-nodered-ibm-cloud/20432)

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**Author:** [@etawyy](https://discourse.nodered.org/u/etawyy)\
**Replies:** 3\
**Last updated:** [16 January 2020 11:22 UTC](https://discourse.nodered.org/t/https-file-server-on-nodered-ibm-cloud/20432 "2020-01-16T11:22:16Z")

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Hi there, I need to setup a https file server, used by my iot objects to fetch their updated firmware. I have a node-red app, (note: on IBM cloud) so the easiest for me would be to use that. On http that works fine: "…

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## [Error with starting node red](https://discourse.nodered.org/t/error-with-starting-node-red/20388)

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**Author:** [@Andres](https://discourse.nodered.org/u/Andres)\
**Replies:** 7\
**Last updated:** [16 January 2020 11:18 UTC](https://discourse.nodered.org/t/error-with-starting-node-red/20388 "2020-01-16T11:18:51Z")

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Hi everyone, when i'm starting node red with the following params: os: centos 7 NR version: 0.20.6 node version: 6.17.1 npm version: 3.10.10 with pm2 (2.5) for auto start i have the following error and NR does not wor…

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## [Feature request: Subflow to open next to the current flow](https://discourse.nodered.org/t/feature-request-subflow-to-open-next-to-the-current-flow/20442)

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**Author:** [@Christian-Me](https://discourse.nodered.org/u/Christian-Me)\
**Replies:** 0\
**Last updated:** [16 January 2020 11:11 UTC](https://discourse.nodered.org/t/feature-request-subflow-to-open-next-to-the-current-flow/20442 "2020-01-16T11:11:52Z")

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Hello, to come back to you so quick (I found out it is better to start a thread for every question instead of a list of questions) If I double click on a subflow the flow opens at the end of all other tabs. During dev…

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## [Is node-red-contrib-google still working?](https://discourse.nodered.org/t/is-node-red-contrib-google-still-working/20410)

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**Author:** [@regissg](https://discourse.nodered.org/u/regissg)\
**Replies:** 1\
**Last updated:** [16 January 2020 09:16 UTC](https://discourse.nodered.org/t/is-node-red-contrib-google-still-working/20410 "2020-01-16T09:16:14Z")

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When I install it I've got the following error message on the node: "invalid property: -google" and when I look at the log file I've got a bunch of warnings: 2020-01-15T21:55:24.959Z Install : node-red-contrib-google …

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## [Accessing Node Settings](https://discourse.nodered.org/t/accessing-node-settings/20418)

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**Author:** [@iOnline247](https://discourse.nodered.org/u/iOnline247)\
**Replies:** 1\
**Last updated:** [16 January 2020 09:15 UTC](https://discourse.nodered.org/t/accessing-node-settings/20418 "2020-01-16T09:15:25Z")

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I finally figured out how to send a config flag to the node instance of a plugin. const { AWS\_ACCESS\_KEY\_ID, AWS\_REGION, AMAZON\_REGION, AWS\_SECRET\_ACCESS\_KEY } = process.env; module.exports = function(RED) { …

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## [Extracting json data](https://discourse.nodered.org/t/extracting-json-data/20435)

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**Author:** [@Ian](https://discourse.nodered.org/u/Ian)\
**Replies:** 1\
**Last updated:** [16 January 2020 09:07 UTC](https://discourse.nodered.org/t/extracting-json-data/20435 "2020-01-16T09:07:15Z")

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Hi I am receiving json mqtt data in the following format. I have to decipher what the registers mean. I think the 2 I am interested in are the registers in bold How can I extract those registers into 2 payloads? {"e…

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## [Car Plate Recognition System with Raspberry Pi and Node-RED](https://discourse.nodered.org/t/car-plate-recognition-system-with-raspberry-pi-and-node-red/3343)

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**Author:** [@ttquattroman](https://discourse.nodered.org/u/ttquattroman)\
**Replies:** 20\
**Last updated:** [16 January 2020 08:57 UTC](https://discourse.nodered.org/t/car-plate-recognition-system-with-raspberry-pi-and-node-red/3343 "2020-01-16T08:57:14Z")

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Hi, I am trying to get a "Car Plate Recognition System with Raspberry Pi and Node-RED" ( https://randomnerdtutorials.com/car-plate-recognition-system-with-raspberry-pi-and-node-red/#comment-335263 ) running but keep gett…

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## [Websocket disconnects](https://discourse.nodered.org/t/websocket-disconnects/20433)

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**Author:** [@Montezoma](https://discourse.nodered.org/u/Montezoma)\
**Replies:** 0\
**Last updated:** [16 January 2020 08:37 UTC](https://discourse.nodered.org/t/websocket-disconnects/20433 "2020-01-16T08:37:39Z")

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Hi, I am trying to establish a WebSocket connection to a target URL provided by "eu4pro.loriot.io". When testing the connection on websocket(dot)org, everything seems to work. In Node-Red, however, only some messages a…

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## [How fast is Node-Red?](https://discourse.nodered.org/t/how-fast-is-node-red/19014)

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**Author:** [@insanoff](https://discourse.nodered.org/u/insanoff)\
**Replies:** 32\
**Last updated:** [16 January 2020 08:26 UTC](https://discourse.nodered.org/t/how-fast-is-node-red/19014 "2020-01-16T08:26:32Z")

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Hi Folks, I am learning Node-Red and already have implemented together with influxDB and Grafana for basic data acquisition purposes. I would like to also make a vehicle data logger, which require high resolution data a…

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## [Issue using "require" in bluemix function nodes](https://discourse.nodered.org/t/issue-using-require-in-bluemix-function-nodes/8005)

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**Author:** [@etawyy](https://discourse.nodered.org/u/etawyy)\
**Replies:** 2\
**Last updated:** [16 January 2020 08:06 UTC](https://discourse.nodered.org/t/issue-using-require-in-bluemix-function-nodes/8005 "2020-01-16T08:06:21Z")

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Hi, I have followed a couple of tutorials to add a require in bluemix function node, in particular: https://nodered.org/docs/writing-functions.html In my case, I need to have not just a require but also with parameters …

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## [Insert local time in db](https://discourse.nodered.org/t/insert-local-time-in-db/19948)

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**Author:** [@NODE777](https://discourse.nodered.org/u/NODE777)\
**Replies:** 10\
**Last updated:** [16 January 2020 07:10 UTC](https://discourse.nodered.org/t/insert-local-time-in-db/19948 "2020-01-16T07:10:44Z")

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I have created the following db with ; CREATE TABLE hvac2 ( id INTEGER PRIMARY KEY AUTOINCREMENT, CURRENT\_TIMESTAMP , hp NUMERIC, lp NUMERIC, cltmp NUMERIC,evaptmp NUMERIC,cmpI NUMERIC, device TEXT) Just for test I…

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## [Change icon in ui\_button via message?](https://discourse.nodered.org/t/change-icon-in-ui-button-via-message/20396)

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**Author:** [@markost](https://discourse.nodered.org/u/markost)\
**Replies:** 4\
**Last updated:** [15 January 2020 21:50 UTC](https://discourse.nodered.org/t/change-icon-in-ui-button-via-message/20396 "2020-01-15T21:50:12Z")

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Hi, is it possible to change the ui\_button icon via msg? This works for the label, color and background, but not for the icon.

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## [Script for burning SD cards for Pis](https://discourse.nodered.org/t/script-for-burning-sd-cards-for-pis/20287)

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**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 12\
**Last updated:** [15 January 2020 20:33 UTC](https://discourse.nodered.org/t/script-for-burning-sd-cards-for-pis/20287 "2020-01-15T20:33:53Z")

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Not specifically node-red oriented, but I have written a script that I use to burn SD cards for Pis, and it was suggested I post it here. It burns one of the standard Raspbian downloads then sets up the wifi SSID and pa…

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## [Sharing serial port between Node-Red & Python](https://discourse.nodered.org/t/sharing-serial-port-between-node-red-python/20329)

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**Author:** [@New2Node](https://discourse.nodered.org/u/New2Node)\
**Replies:** 5\
**Last updated:** [15 January 2020 20:05 UTC](https://discourse.nodered.org/t/sharing-serial-port-between-node-red-python/20329 "2020-01-15T20:05:10Z")

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Im using Node-Red to send binary data to a serial device (RS232), I also have a Python script which is executed using the pythonshell node which is sending binary data to the same port (At different times) I’m getting a…

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## [How to track status of global variables (and some nodes)?](https://discourse.nodered.org/t/how-to-track-status-of-global-variables-and-some-nodes/20338)

<div class="topic-metadata">

**Author:** [@hepcat72](https://discourse.nodered.org/u/hepcat72)\
**Replies:** 15\
**Last updated:** [15 January 2020 18:30 UTC](https://discourse.nodered.org/t/how-to-track-status-of-global-variables-and-some-nodes/20338 "2020-01-15T18:30:24Z")

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I have a number of flows that use the state of some global variables to decide what to do when certain triggering events happen. For example I have a flow that sets my slack status to "waiting on the bus" when the garage…

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## [TCP In get sender IP address](https://discourse.nodered.org/t/tcp-in-get-sender-ip-address/20351)

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**Author:** [@mlschuh](https://discourse.nodered.org/u/mlschuh)\
**Replies:** 4\
**Last updated:** [15 January 2020 18:15 UTC](https://discourse.nodered.org/t/tcp-in-get-sender-ip-address/20351 "2020-01-15T18:15:16Z")

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I would like to be able to process incoming TCP messages based on the sender IP address. Is there any way to retrieve the source IP/Port details on a TCP In node, perhaps in \_session.id?

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## [How to pass parameter to big query select palette](https://discourse.nodered.org/t/how-to-pass-parameter-to-big-query-select-palette/20380)

<div class="topic-metadata">

**Author:** [@dave101ua](https://discourse.nodered.org/u/dave101ua)\
**Replies:** 4\
**Last updated:** [15 January 2020 17:06 UTC](https://discourse.nodered.org/t/how-to-pass-parameter-to-big-query-select-palette/20380 "2020-01-15T17:06:28Z")

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Hello everybody , I'm new to node-red I need your help please I use node-red-contrib-bigquery palette and I have to pass a variable parameter to query but It does now work for me, here is screenshot with properties and…

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## [Template Node to embed Google Maps](https://discourse.nodered.org/t/template-node-to-embed-google-maps/20362)

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**Author:** [@andor](https://discourse.nodered.org/u/andor)\
**Replies:** 7\
**Last updated:** [15 January 2020 16:55 UTC](https://discourse.nodered.org/t/template-node-to-embed-google-maps/20362 "2020-01-15T16:55:32Z")

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Hi folks, first of all thanks for the dashboard template node! I think it is a great tool which offers huge flexibility in creating dashboards. Today I tried creating a complex dashboard that has also a section where a…

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## [Modify Title of UI dashboard page \<head\>](https://discourse.nodered.org/t/modify-title-of-ui-dashboard-page-head/20230)

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**Author:** [@sunsharebox](https://discourse.nodered.org/u/sunsharebox)\
**Replies:** 3\
**Last updated:** [15 January 2020 15:59 UTC](https://discourse.nodered.org/t/modify-title-of-ui-dashboard-page-head/20230 "2020-01-15T15:59:54Z")

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Hello, I'm looking for ways to modify the title of my UI dashboard in section in order to become visible from search engines. I still get the html source code below and would like to fille the \<Title\>\</Title\> section …

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## [Node red restarts after logging errors](https://discourse.nodered.org/t/node-red-restarts-after-logging-errors/20222)

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**Author:** [@diaz\_1988](https://discourse.nodered.org/u/diaz_1988)\
**Replies:** 17\
**Last updated:** [15 January 2020 15:19 UTC](https://discourse.nodered.org/t/node-red-restarts-after-logging-errors/20222 "2020-01-15T15:19:50Z")

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Hello i am completely new with node red. I created 7 flows and deployed almost 400 nodes . I use node-red modbus node to extract several info from one UPS unit and one A/C unit via modbus tcp . Although flows are behavi…

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## [S7 Communication](https://discourse.nodered.org/t/s7-communication/20373)

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**Author:** [@nicklasf](https://discourse.nodered.org/u/nicklasf)\
**Replies:** 1\
**Last updated:** [15 January 2020 15:16 UTC](https://discourse.nodered.org/t/s7-communication/20373 "2020-01-15T15:16:49Z")

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Hi, I have an odd problem. I'm trying to access an Logo PLC over the internet. I wan't to read from the PLC every 60 seconds witch result in read errors. But when I try to get values every 9 seconds or less everything …

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