# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1115

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

**Page:** 1116

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## [Google gauge color in template node](https://discourse.nodered.org/t/google-gauge-color-in-template-node/24878)

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**Author:** [@josekavunkal](https://discourse.nodered.org/u/josekavunkal)\
**Replies:** 2\
**Last updated:** [15 April 2020 13:55 UTC](https://discourse.nodered.org/t/google-gauge-color-in-template-node/24878 "2020-04-15T13:55:36Z")

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I pasted following google HTML in template. google.charts.load('current', {'packages':\['gauge'\]}); google.charts.setOnLoadCallback(drawChart); function drawChart() { var data = google.vis…

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## [How to write query in using input voice data to comapre with data in database](https://discourse.nodered.org/t/how-to-write-query-in-using-input-voice-data-to-comapre-with-data-in-database/24877)

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**Author:** [@lingzhongli](https://discourse.nodered.org/u/lingzhongli)\
**Replies:** 0\
**Last updated:** [15 April 2020 13:29 UTC](https://discourse.nodered.org/t/how-to-write-query-in-using-input-voice-data-to-comapre-with-data-in-database/24877 "2020-04-15T13:29:29Z")

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Hello guys, this is my project "Voice Activated Entrance System" USER database HISTORY database \[{"id":"ee60c3e3.69e03","type":"mysql","z":"98f4cc17.965b","mydb":"7c738c44.e9a364","name":"DB\_MYSQL","x":670,"y":2…

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## [Simple no frills flow to auto backup NR flows to usb thubmdrive](https://discourse.nodered.org/t/simple-no-frills-flow-to-auto-backup-nr-flows-to-usb-thubmdrive/24850)

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**Author:** [@kenkoknz](https://discourse.nodered.org/u/kenkoknz)\
**Replies:** 0\
**Last updated:** [15 April 2020 07:14 UTC](https://discourse.nodered.org/t/simple-no-frills-flow-to-auto-backup-nr-flows-to-usb-thubmdrive/24850 "2020-04-15T07:14:01Z")

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Hi All, Like many i have a few Pis with NR dotted all over the place. Probably unlike many, I have not been doing backups religiously and I guess it is only a question of when not if, one of the Pi gets corrupted or the…

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## [More than one Dashboard?](https://discourse.nodered.org/t/more-than-one-dashboard/24864)

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**Author:** [@Birdy](https://discourse.nodered.org/u/Birdy)\
**Replies:** 3\
**Last updated:** [15 April 2020 12:54 UTC](https://discourse.nodered.org/t/more-than-one-dashboard/24864 "2020-04-15T12:54:01Z")

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Hi all, is it possible to have more than one Dashboard in parallel - separated in any way from each other ? I have one Node-Red-Service installed with several flows for several of my friends (reading data via MQTT and …

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## [Unable to read value from object](https://discourse.nodered.org/t/unable-to-read-value-from-object/24867)

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**Author:** [@Birdy](https://discourse.nodered.org/u/Birdy)\
**Replies:** 1\
**Last updated:** [15 April 2020 12:14 UTC](https://discourse.nodered.org/t/unable-to-read-value-from-object/24867 "2020-04-15T12:14:56Z")

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Hi, I have this specific JSON-Object: 15.4.2020, 13:46:47node: 8ab35232.361e7 tele/TB01\_Orgon/SENSOR : msg : Object object topic: "tele/TB01\_Orgon/SENSOR" payload: object Time: "2020-04-15T12:46:47" SDS0X1: object PM2.…

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## [Unable to switch from Line to Bar Chart](https://discourse.nodered.org/t/unable-to-switch-from-line-to-bar-chart/24863)

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**Author:** [@Birdy](https://discourse.nodered.org/u/Birdy)\
**Replies:** 2\
**Last updated:** [15 April 2020 11:51 UTC](https://discourse.nodered.org/t/unable-to-switch-from-line-to-bar-chart/24863 "2020-04-15T11:51:33Z")

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Hi all, can you please help me to switch from Line- to Bar-Chart ? I have two msg.Objects msg1 and msg2 with individual topic and payloads. If I insert them into a line-chart it works perfectly fine and I see two line…

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## [Combine Payloads into an object](https://discourse.nodered.org/t/combine-payloads-into-an-object/24865)

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**Author:** [@Chaos](https://discourse.nodered.org/u/Chaos)\
**Replies:** 1\
**Last updated:** [15 April 2020 11:22 UTC](https://discourse.nodered.org/t/combine-payloads-into-an-object/24865 "2020-04-15T11:22:29Z")

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I am trying to combine two output topic, payload pairs into an object made up of the payloads. the two msg's come out of node-red-ramp-thermostat as topic = current / payload = value & topic = target / payload = value …

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## [Logic for ESP live status on google home](https://discourse.nodered.org/t/logic-for-esp-live-status-on-google-home/24860)

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**Author:** [@srinidhichiru](https://discourse.nodered.org/u/srinidhichiru)\
**Replies:** 0\
**Last updated:** [15 April 2020 09:08 UTC](https://discourse.nodered.org/t/logic-for-esp-live-status-on-google-home/24860 "2020-04-15T09:08:02Z")

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Hello Everyone, Iam a new bee to Node-red forums and correct me if iam wrong. first of all iam very glad i find NODE RED to work on my hobbie projects, iam not soo familiar with java language but this made it soo simpl…

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## [Msg in a file, thanks :)](https://discourse.nodered.org/t/msg-in-a-file-thanks/24855)

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**Author:** [@Oxbow](https://discourse.nodered.org/u/Oxbow)\
**Replies:** 1\
**Last updated:** [15 April 2020 08:56 UTC](https://discourse.nodered.org/t/msg-in-a-file-thanks/24855 "2020-04-15T08:56:23Z")

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Hello, I have datas from sensor (temperature, lignt, humidity, etc.) that are received in a node-red function with this code : var split = msg.payload.split("\\r"); var Humidity = parseInt(split\[1\].slice(12, split\[1\].…

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## [Using slider to change rate limit](https://discourse.nodered.org/t/using-slider-to-change-rate-limit/24854)

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**Author:** [@Torix](https://discourse.nodered.org/u/Torix)\
**Replies:** 0\
**Last updated:** [15 April 2020 08:23 UTC](https://discourse.nodered.org/t/using-slider-to-change-rate-limit/24854 "2020-04-15T08:23:10Z")

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Hi, I'm pretty new here and I have a little project going. I need to change the rate of messages passing through the delay node using a slider. The point of this flow is that the user can start to log values using the…

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## [Accessing Node-Red on RasPi Standalone Network](https://discourse.nodered.org/t/accessing-node-red-on-raspi-standalone-network/24650)

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**Author:** [@fbilo](https://discourse.nodered.org/u/fbilo)\
**Replies:** 6\
**Last updated:** [15 April 2020 07:33 UTC](https://discourse.nodered.org/t/accessing-node-red-on-raspi-standalone-network/24650 "2020-04-15T07:33:04Z")

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Hi, I'm a beginner working on a Raspberry PI 3 Node-Red project. I first connected the Raspberry PI on my home Wifi and created a flow and UI by connecting to node-red over the network using the web-browser on my laptop …

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## [Strange variable values within a function](https://discourse.nodered.org/t/strange-variable-values-within-a-function/24832)

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**Author:** [@Cyber](https://discourse.nodered.org/u/Cyber)\
**Replies:** 3\
**Last updated:** [15 April 2020 07:24 UTC](https://discourse.nodered.org/t/strange-variable-values-within-a-function/24832 "2020-04-15T07:24:18Z")

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Hi, it's about the variable SpieleraumHZGTime. The function below is the only function where I set it (except one time a day where I reset it to 0). It counts the time where a GPIO of a easyesp node, which is controll…

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## [Modbus ON-Line / OFF-line status](https://discourse.nodered.org/t/modbus-on-line-off-line-status/24813)

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**Author:** [@farcry](https://discourse.nodered.org/u/farcry)\
**Replies:** 1\
**Last updated:** [14 April 2020 14:38 UTC](https://discourse.nodered.org/t/modbus-on-line-off-line-status/24813 "2020-04-14T14:38:05Z")

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Hello. I would like to monitor the OFFLINE status of Modbus device. For now I'm using SERIAL comunication. If the device is OFFLINE I would lit RED LIGHT. If it is ONLINE the light would be GREEN. I tried with STATU…

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## [Start folder location in fs-file-lister node](https://discourse.nodered.org/t/start-folder-location-in-fs-file-lister-node/5968)

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**Author:** [@hathemi](https://discourse.nodered.org/u/hathemi)\
**Replies:** 1\
**Last updated:** [19 December 2018 16:02 UTC](https://discourse.nodered.org/t/start-folder-location-in-fs-file-lister-node/5968 "2018-12-19T16:02:13Z")

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I'am working on displaying files in my dashboard. So, is there anyway to add the location start folder dynamically. for exemple, can'i set the a msg.foldername then send it to fs-file-lister node?? i have read the node…

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## [How to display an image on Node red dashboard using template node](https://discourse.nodered.org/t/how-to-display-an-image-on-node-red-dashboard-using-template-node/24734)

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**Author:** [@Jude.Robise](https://discourse.nodered.org/u/Jude.Robise)\
**Replies:** 6\
**Last updated:** [15 April 2020 02:37 UTC](https://discourse.nodered.org/t/how-to-display-an-image-on-node-red-dashboard-using-template-node/24734 "2020-04-15T02:37:14Z")

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I just wanna display a local path image on node red dashboard using template node. nothing worked so far. any help would be highly appreciated! thanks

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## [Change name node-red contrib node after publishing on npm](https://discourse.nodered.org/t/change-name-node-red-contrib-node-after-publishing-on-npm/24784)

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**Author:** [@taminhhienmor](https://discourse.nodered.org/u/taminhhienmor)\
**Replies:** 3\
**Last updated:** [15 April 2020 02:12 UTC](https://discourse.nodered.org/t/change-name-node-red-contrib-node-after-publishing-on-npm/24784 "2020-04-15T02:12:33Z")

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Hi everyone, Can I change name my node after publishing that node Or I must publish a new node? Thanks, Hien

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## [Raspberry PI conexión con node-red utilizando protocolo Coap](https://discourse.nodered.org/t/raspberry-pi-conexion-con-node-red-utilizando-protocolo-coap/24837)

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**Author:** [@pablocatota](https://discourse.nodered.org/u/pablocatota)\
**Replies:** 0\
**Last updated:** [14 April 2020 22:11 UTC](https://discourse.nodered.org/t/raspberry-pi-conexion-con-node-red-utilizando-protocolo-coap/24837 "2020-04-14T22:11:32Z")

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Hola estoy desarrollando un proyecto, soy nuevo utilizando node-red y quiero que me ayuden con información de como conectar utilizando protocolo coap, node-red y Raspebbry PI, luego a la nube de IMB.

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## [Compare Numbers](https://discourse.nodered.org/t/compare-numbers/24825)

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**Author:** [@SavageSkull](https://discourse.nodered.org/u/SavageSkull)\
**Replies:** 3\
**Last updated:** [14 April 2020 20:27 UTC](https://discourse.nodered.org/t/compare-numbers/24825 "2020-04-14T20:27:46Z")

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Hi there, i am new to Node Red and most of programming. Searching Google and the forum didn't help me at all, almost because english is not my native language and i dont understand most of the subjects. My very little…

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## [How to detect empty string in a structure](https://discourse.nodered.org/t/how-to-detect-empty-string-in-a-structure/24826)

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**Author:** [@monkeyjacob17](https://discourse.nodered.org/u/monkeyjacob17)\
**Replies:** 1\
**Last updated:** [14 April 2020 17:41 UTC](https://discourse.nodered.org/t/how-to-detect-empty-string-in-a-structure/24826 "2020-04-14T17:41:44Z")

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Hello, I'm getting data from a PLC and I get a strucutre like below : {"signal":"MsgAppro\_UK28","path":"DB58,STRING134..63","error":0,"value":\[""\]} With the function "Switch", I test with the "Empty" or "Not Empty" co…

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## [Chart Performance - Covid-19 Project](https://discourse.nodered.org/t/chart-performance-covid-19-project/24726)

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**Author:** [@xpercad](https://discourse.nodered.org/u/xpercad)\
**Replies:** 17\
**Last updated:** [14 April 2020 15:52 UTC](https://discourse.nodered.org/t/chart-performance-covid-19-project/24726 "2020-04-14T15:52:54Z")

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## [Callback as json argument](https://discourse.nodered.org/t/callback-as-json-argument/24529)

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**Author:** [@frankzappa](https://discourse.nodered.org/u/frankzappa)\
**Replies:** 32\
**Last updated:** [14 April 2020 15:49 UTC](https://discourse.nodered.org/t/callback-as-json-argument/24529 "2020-04-14T15:49:28Z")

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Hi dear community!!! I've thank this was right topic... I've got one (in fact a lot...) big trouble. I want to put a callback as the argument of the "legend" property, as you could see, but the json editor says error: …

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## [Tcpin, status and \_session](https://discourse.nodered.org/t/tcpin-status-and-session/24820)

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**Author:** [@Corhondor](https://discourse.nodered.org/u/Corhondor)\
**Replies:** 0\
**Last updated:** [14 April 2020 15:10 UTC](https://discourse.nodered.org/t/tcpin-status-and-session/24820 "2020-04-14T15:10:13Z")

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Hello, I'm trying to use multiple tcp connections in the same flow. Sometimes I send the first message to the tcp connection so I need to know the \_session ID of each connection to avoid send the message to all the conne…

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## [Node-red-node-snmp dynamic host?](https://discourse.nodered.org/t/node-red-node-snmp-dynamic-host/24615)

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**Author:** [@mgarito](https://discourse.nodered.org/u/mgarito)\
**Replies:** 8\
**Last updated:** [14 April 2020 15:17 UTC](https://discourse.nodered.org/t/node-red-node-snmp-dynamic-host/24615 "2020-04-14T15:17:30Z")

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I'm trying to find documentation on how to dynamically set the 'Host' parameter of the SNMP node. Use case: Http://server:1880/ip?ip=ip.to.check \>\>\> SNMP host \<ip.to.check\>

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## [Is it possible to run noderd on router](https://discourse.nodered.org/t/is-it-possible-to-run-noderd-on-router/24818)

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**Author:** [@demokedes](https://discourse.nodered.org/u/demokedes)\
**Replies:** 1\
**Last updated:** [14 April 2020 15:09 UTC](https://discourse.nodered.org/t/is-it-possible-to-run-noderd-on-router/24818 "2020-04-14T15:09:11Z")

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Hello, Is it possible to run nodered on local Asus router? I have running Asus wrt (similar to dd wrt) on it. I am already running torrent server, samba server, etc...

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## [Google cast from Nodered not installed n WAN](https://discourse.nodered.org/t/google-cast-from-nodered-not-installed-n-wan/24573)

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**Author:** [@demokedes](https://discourse.nodered.org/u/demokedes)\
**Replies:** 5\
**Last updated:** [14 April 2020 14:47 UTC](https://discourse.nodered.org/t/google-cast-from-nodered-not-installed-n-wan/24573 "2020-04-14T14:47:29Z")

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Dear all, I found cast node which I find very useful. My node-red installation is not residing in my local LAN, but on the server in the cloud. I created port forwarding rule for port 8009 (Google cast) and configured…

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## [Lost connection to server, reconnecting in](https://discourse.nodered.org/t/lost-connection-to-server-reconnecting-in/24659)

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**Author:** [@myozone](https://discourse.nodered.org/u/myozone)\
**Replies:** 60\
**Last updated:** [14 April 2020 14:33 UTC](https://discourse.nodered.org/t/lost-connection-to-server-reconnecting-in/24659 "2020-04-14T14:33:25Z")

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I somehow screwed up my node-red again and have this reacuring message 'Lost connection to server, reconnecting in 1s. \[Try now\]' How do I find out what is causing it ?

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## [Avoiding cloning messages](https://discourse.nodered.org/t/avoiding-cloning-messages/24808)

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**Author:** [@thiagorizzo](https://discourse.nodered.org/u/thiagorizzo)\
**Replies:** 7\
**Last updated:** [14 April 2020 14:26 UTC](https://discourse.nodered.org/t/avoiding-cloning-messages/24808 "2020-04-14T14:26:50Z")

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Hi all, I just read Cloning messages in a flow. Whats the best pratice on flat flows to avoid message cloning? should I code functions this way: Thank you!

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## [Ok, what's going on with this message?](https://discourse.nodered.org/t/ok-whats-going-on-with-this-message/24811)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 6\
**Last updated:** [14 April 2020 14:05 UTC](https://discourse.nodered.org/t/ok-whats-going-on-with-this-message/24811 "2020-04-14T14:05:52Z")

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I've bitten the bullet and am re-writing old flows. While messing around with one, I am seeing this payload {"payload":1,"event":{"clientX":367,"clientY":195,"bbox":\[327,222,483,174\]},"socketid":"AiZlnOlnlm43IvokAAAB",…

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## [Can I get the IP of the tcp client?](https://discourse.nodered.org/t/can-i-get-the-ip-of-the-tcp-client/24698)

<div class="topic-metadata">

**Author:** [@KOUKILEO](https://discourse.nodered.org/u/KOUKILEO)\
**Replies:** 6\
**Last updated:** [14 April 2020 13:21 UTC](https://discourse.nodered.org/t/can-i-get-the-ip-of-the-tcp-client/24698 "2020-04-14T13:21:00Z")

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The tcp server I created in node-red ,But I have many clients,! Is there a way to find the IP of each connected customer? So that I can choose one of the clients to send messages, not everyone ! I want to achieve this…

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## [Flashing buttons](https://discourse.nodered.org/t/flashing-buttons/24810)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 0\
**Last updated:** [14 April 2020 12:48 UTC](https://discourse.nodered.org/t/flashing-buttons/24810 "2020-04-14T12:48:20Z")

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This is a small flow if you like having buttons on your flow/s that offer feedback. \[{"id":"b51e2b02.46d418","type":"trigger","z":"1781e581.31721a","op1":"Down","op2":"0","op1type":"str","op2type":"str","duration":"-140…

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