# Latest

**URL:** https://discourse.nodered.org/latest.md?page=867

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

**Page:** 868

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## [Interfacing Control 4?](https://discourse.nodered.org/t/interfacing-control-4/41728)

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**Author:** [@fmarzocca](https://discourse.nodered.org/u/fmarzocca)\
**Replies:** 4\
**Last updated:** [7 March 2021 14:45 UTC](https://discourse.nodered.org/t/interfacing-control-4/41728 "2021-03-07T14:45:30Z")

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Is anyone aware of a node to interface flows with Control 4 devices?

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## [Updating specific linked (tagged) sub-page data in ui\_template](https://discourse.nodered.org/t/updating-specific-linked-tagged-sub-page-data-in-ui-template/42193)

<div class="topic-metadata">

**Author:** [@notnice](https://discourse.nodered.org/u/notnice)\
**Replies:** 0\
**Last updated:** [7 March 2021 11:20 UTC](https://discourse.nodered.org/t/updating-specific-linked-tagged-sub-page-data-in-ui-template/42193 "2021-03-07T11:20:55Z")

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Using ui\_template I want to have a Home page with several linked "area" monitoring sub pages which show information for those areas. The home page would look like the screen shot below. Each areas data is periodically up…

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## [Sum of object values](https://discourse.nodered.org/t/sum-of-object-values/42075)

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**Author:** [@Spyker](https://discourse.nodered.org/u/Spyker)\
**Replies:** 10\
**Last updated:** [7 March 2021 11:06 UTC](https://discourse.nodered.org/t/sum-of-object-values/42075 "2021-03-07T11:06:49Z")

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Hi All, I'm working on a project to monitor my test crypto trading bots. And there is one thing left I didn't succeed in fixing. The bot output is sending me all current positions, in my case 1 to a maximum of 15. But …

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## [Raspberry Pi Dongle Port Forward](https://discourse.nodered.org/t/raspberry-pi-dongle-port-forward/42178)

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**Author:** [@TEdge](https://discourse.nodered.org/u/TEdge)\
**Replies:** 4\
**Last updated:** [7 March 2021 09:43 UTC](https://discourse.nodered.org/t/raspberry-pi-dongle-port-forward/42178 "2021-03-07T09:43:06Z")

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I have been using Node Red foe 3 years to automate my home but still consider myself a Noob as most of my work has just copied others. I am now running Node Red on a Raspberry Pi 3 to monitor my motorhome (yes i am over…

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## [Node-red-node-test issues, getting output from node](https://discourse.nodered.org/t/node-red-node-test-issues-getting-output-from-node/4695)

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**Author:** [@ksvan](https://discourse.nodered.org/u/ksvan)\
**Replies:** 9\
**Last updated:** [7 March 2021 09:26 UTC](https://discourse.nodered.org/t/node-red-node-test-issues-getting-output-from-node/4695 "2021-03-07T09:26:03Z")

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Trying to automate my testing, with "npm test" scripts, github and Travis-ci. Works fine for the most part, but I somehow cannot get the flow to work and catch output from the verisurenode, that is supposed to fetch data…

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## [Persistent global context - missing variables](https://discourse.nodered.org/t/persistent-global-context-missing-variables/42146)

<div class="topic-metadata">

**Author:** [@fmarzocca](https://discourse.nodered.org/u/fmarzocca)\
**Replies:** 4\
**Last updated:** [6 March 2021 15:32 UTC](https://discourse.nodered.org/t/persistent-global-context-missing-variables/42146 "2021-03-06T15:32:52Z")

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I am using around 30 persistent global variables saved in my local Store. Today I had to restart the Raspi after a kernel update and after restart I found that 5% of the variables were set as "undefined", not stored in …

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## [No services in "node-red-contrib-fritz"](https://discourse.nodered.org/t/no-services-in-node-red-contrib-fritz/42140)

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**Author:** [@Ursusprimus](https://discourse.nodered.org/u/Ursusprimus)\
**Replies:** 6\
**Last updated:** [7 March 2021 07:24 UTC](https://discourse.nodered.org/t/no-services-in-node-red-contrib-fritz/42140 "2021-03-07T07:24:27Z")

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Hello, I just installed node-red-contrib-fritz (latest version) and tried to connect it to my Fritzbox (7490, latest version) and seemingly with success. However, it doesn't find any services although it says they were …

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## [Compare 2 payloads with function node](https://discourse.nodered.org/t/compare-2-payloads-with-function-node/42174)

<div class="topic-metadata">

**Author:** [@sfedo](https://discourse.nodered.org/u/sfedo)\
**Replies:** 2\
**Last updated:** [7 March 2021 07:23 UTC](https://discourse.nodered.org/t/compare-2-payloads-with-function-node/42174 "2021-03-07T07:23:35Z")

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Hello, I'm struggling with a function. I have 2 payloads. Let's name them msg.payload.1 and msg.payload.2. Now the function: if (msg.payload.1==true && msg.payload.2==true){ msg.payload=false; }else{ msg.payload=true…

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## [Display full object properties in node.warn?](https://discourse.nodered.org/t/display-full-object-properties-in-node-warn/42138)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 3\
**Last updated:** [6 March 2021 21:47 UTC](https://discourse.nodered.org/t/display-full-object-properties-in-node-warn/42138 "2021-03-06T21:47:24Z")

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Display full object properties in node.warn? Simple way to do this?

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## [Delay / rate limit drops final message?](https://discourse.nodered.org/t/delay-rate-limit-drops-final-message/42115)

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**Author:** [@peter\_a](https://discourse.nodered.org/u/peter_a)\
**Replies:** 8\
**Last updated:** [6 March 2021 21:35 UTC](https://discourse.nodered.org/t/delay-rate-limit-drops-final-message/42115 "2021-03-06T21:35:53Z")

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I've been using Node Red for the first time over past week, and I'm LOVING it! But I've struck an issue with the Delay node, which I might be misunderstanding... My flow takes input from a hardware rotary dimmer, calcu…

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## [Pet drinking fountain reinvented](https://discourse.nodered.org/t/pet-drinking-fountain-reinvented/42166)

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**Author:** [@igrowing](https://discourse.nodered.org/u/igrowing)\
**Replies:** 1\
**Last updated:** [6 March 2021 21:34 UTC](https://discourse.nodered.org/t/pet-drinking-fountain-reinvented/42166 "2021-03-06T21:34:42Z")

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Guys, I'm in doubts if this project is worth to be shared. Please, criticize and/or ask to remove it. Thanks! Petard: another yet "perfect" pet fountain The Node-RED portion of the project is pretty minor: this is wher…

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## [How to display number as 13.0 instead of 13 in a text node](https://discourse.nodered.org/t/how-to-display-number-as-13-0-instead-of-13-in-a-text-node/42161)

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**Author:** [@tsaavedrA](https://discourse.nodered.org/u/tsaavedrA)\
**Replies:** 4\
**Last updated:** [6 March 2021 21:30 UTC](https://discourse.nodered.org/t/how-to-display-number-as-13-0-instead-of-13-in-a-text-node/42161 "2021-03-06T21:30:59Z")

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I am trying to display battery voltage in a text node but I would like it to display to 1 decimal point. The msg.payload going into the text node is a number but when I try to use .toString in a function node it passes a…

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## [Identify people by mobile phone](https://discourse.nodered.org/t/identify-people-by-mobile-phone/4195)

<div class="topic-metadata">

**Author:** [@igrowing](https://discourse.nodered.org/u/igrowing)\
**Replies:** 55\
**Last updated:** [6 March 2021 18:47 UTC](https://discourse.nodered.org/t/identify-people-by-mobile-phone/4195 "2021-03-06T18:47:11Z")

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Hi, As part of home security automation, I want NR over RasPi to detect presence/absence of family members by presence of their mobile phones in the network. I created a file with list of names and MACs: user1,aa:ab:c…

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## [How ibmiot retain messages](https://discourse.nodered.org/t/how-ibmiot-retain-messages/42158)

<div class="topic-metadata">

**Author:** [@fikerplunk](https://discourse.nodered.org/u/fikerplunk)\
**Replies:** 3\
**Last updated:** [6 March 2021 18:24 UTC](https://discourse.nodered.org/t/how-ibmiot-retain-messages/42158 "2021-03-06T18:24:49Z")

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Hi! I'm using ibmiot nodes to send messages to my ESP32 device, I would like to know if I can activate the retain flag so that I can receive the data when I subscribe to the topic. Thanks!

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## [Node-red-contrib-mcp23017chip](https://discourse.nodered.org/t/node-red-contrib-mcp23017chip/37999)

<div class="topic-metadata">

**Author:** [@PizzaProgram](https://discourse.nodered.org/u/PizzaProgram)\
**Replies:** 82\
**Last updated:** [6 March 2021 18:18 UTC](https://discourse.nodered.org/t/node-red-contrib-mcp23017chip/37999 "2021-03-06T18:18:37Z")

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Marry Xmas to all :slight\_smile: I've installed and tried today this mcp23017chip node, but it says: TypeError: Cannot read property 'setBit' of null How can I debug it further, what could be the problem? Can I see s…

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## [Serialdata and ui dashboard](https://discourse.nodered.org/t/serialdata-and-ui-dashboard/42046)

<div class="topic-metadata">

**Author:** [@9toejack](https://discourse.nodered.org/u/9toejack)\
**Replies:** 20\
**Last updated:** [6 March 2021 18:02 UTC](https://discourse.nodered.org/t/serialdata-and-ui-dashboard/42046 "2021-03-06T18:02:40Z")

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Hello, first and foremost i am a newbie learning on the fly. biggest problem is the different ways node red can do a function, however after watching so many videos im left to thinking that i have several issues. but let…

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## [Problem with substr()](https://discourse.nodered.org/t/problem-with-substr/42137)

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**Author:** [@Thewaver](https://discourse.nodered.org/u/Thewaver)\
**Replies:** 5\
**Last updated:** [6 March 2021 17:53 UTC](https://discourse.nodered.org/t/problem-with-substr/42137 "2021-03-06T17:53:39Z")

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HELP!!!! Substr wont split a string on Node red but works in codepen.io (javascript dev app)?? The following works on JavaScript nodepen.io but NOT on node red: var tima = "2021-02-09T07:36:40:000Z."; const ss = Numb…

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## [Background logo](https://discourse.nodered.org/t/background-logo/42110)

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**Author:** [@HZB](https://discourse.nodered.org/u/HZB)\
**Replies:** 1\
**Last updated:** [6 March 2021 17:17 UTC](https://discourse.nodered.org/t/background-logo/42110 "2021-03-06T17:17:50Z")

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Hi, I just want to display my company's logo at the background of my dashboard. Any suggestions or recommendations?

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## [Shelly 1 get status](https://discourse.nodered.org/t/shelly-1-get-status/42128)

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**Author:** [@sfedo](https://discourse.nodered.org/u/sfedo)\
**Replies:** 10\
**Last updated:** [6 March 2021 15:34 UTC](https://discourse.nodered.org/t/shelly-1-get-status/42128 "2021-03-06T15:34:54Z")

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hello, I would like to use shelly1 but have not yet found the right communication for me. Since I only have switches installed at home, I would like to query the switch with shelly1 and send the status to node-red and …

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## [How to decrease digits in a Gauge?](https://discourse.nodered.org/t/how-to-decrease-digits-in-a-gauge/42150)

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**Author:** [@Heimo001](https://discourse.nodered.org/u/Heimo001)\
**Replies:** 4\
**Last updated:** [6 March 2021 13:56 UTC](https://discourse.nodered.org/t/how-to-decrease-digits-in-a-gauge/42150 "2021-03-06T13:56:38Z")

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Hi, i am new with node-red and i want decrease the digits in a Gauge. When i start the Dashboard i get the temperature in e.g. 21.77615442345 degrees. And i want to show it with 2 digits e.g. 21.78 degrees. Ho can i d…

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## [Can't remove node-red-contrib-gpio](https://discourse.nodered.org/t/cant-remove-node-red-contrib-gpio/42129)

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**Author:** [@tcr000](https://discourse.nodered.org/u/tcr000)\
**Replies:** 3\
**Last updated:** [6 March 2021 13:13 UTC](https://discourse.nodered.org/t/cant-remove-node-red-contrib-gpio/42129 "2021-03-06T13:13:34Z")

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I installed node-red-contrib-gpio and want to uninstall it. The pallette manager said it was in use but there were no nodes using it. I tried deleting the two config nodes firmata and ioplugin. Still can't remove it. Now…

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## [HUE lamp (Phoscon Deconz) \> dimming node](https://discourse.nodered.org/t/hue-lamp-phoscon-deconz-dimming-node/42148)

<div class="topic-metadata">

**Author:** [@tomg1970](https://discourse.nodered.org/u/tomg1970)\
**Replies:** 0\
**Last updated:** [6 March 2021 12:57 UTC](https://discourse.nodered.org/t/hue-lamp-phoscon-deconz-dimming-node/42148 "2021-03-06T12:57:56Z")

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Hello, I would like to implement the following: Voice command Alexa (blue: Esszimmer) \> Dimming HUE lamp (orange: ESZ Fenster) My HUE is integrated via Deconz / Phoscon. Visualization takes place via IoBroker. Here m…

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## [A code error in a node in my palette](https://discourse.nodered.org/t/a-code-error-in-a-node-in-my-palette/42076)

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**Author:** [@ninjamoba](https://discourse.nodered.org/u/ninjamoba)\
**Replies:** 8\
**Last updated:** [6 March 2021 12:08 UTC](https://discourse.nodered.org/t/a-code-error-in-a-node-in-my-palette/42076 "2021-03-06T12:08:50Z")

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I found a code error in a node and Id like to fix it..for my local install. Is there a way to tinker with loaded nodes and install them into the pallette without npm repository being updated and keeping a unique local ve…

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## [Subtract 5minuts from a time out of a state node](https://discourse.nodered.org/t/subtract-5minuts-from-a-time-out-of-a-state-node/42122)

<div class="topic-metadata">

**Author:** [@MarkV](https://discourse.nodered.org/u/MarkV)\
**Replies:** 1\
**Last updated:** [6 March 2021 12:04 UTC](https://discourse.nodered.org/t/subtract-5minuts-from-a-time-out-of-a-state-node/42122 "2021-03-06T12:04:32Z")

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Hello, This is my first post on this forum. I'm rather new to nodered and looked at severall youtube tutorials, but can't find the answer on my problem. I'm creating a flow in what has to do the following: When i cha…

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## [Alexa-Remote2 activity - how to identify the device being controlled](https://discourse.nodered.org/t/alexa-remote2-activity-how-to-identify-the-device-being-controlled/42131)

<div class="topic-metadata">

**Author:** [@coppo23](https://discourse.nodered.org/u/coppo23)\
**Replies:** 2\
**Last updated:** [6 March 2021 11:43 UTC](https://discourse.nodered.org/t/alexa-remote2-activity-how-to-identify-the-device-being-controlled/42131 "2021-03-06T11:43:17Z")

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Apologies if this has been asked but I couldn't find anything on it here. I can't find out whether remote 2 can report to node red when I change a device by voice command. Eg 'Alexa turn on hall picture rail'. I get a d…

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## [Two simple bits of code can't coexist together - I'm clearly doing something stupid](https://discourse.nodered.org/t/two-simple-bits-of-code-cant-coexist-together-im-clearly-doing-something-stupid/42143)

<div class="topic-metadata">

**Author:** [@dclear](https://discourse.nodered.org/u/dclear)\
**Replies:** 2\
**Last updated:** [6 March 2021 11:24 UTC](https://discourse.nodered.org/t/two-simple-bits-of-code-cant-coexist-together-im-clearly-doing-something-stupid/42143 "2021-03-06T11:24:53Z")

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//const shiftstart = msg.payload.shift\_start.timestamp; //const clockin = msg.payload.clockin\_time.timestamp; //const timeDifference = shiftstart - clockin; //const timeDifference2 = clockin - shiftstart; var breakd = ms…

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## [UI builder - Using data from msg.payload in computed classes?](https://discourse.nodered.org/t/ui-builder-using-data-from-msg-payload-in-computed-classes/41930)

<div class="topic-metadata">

**Author:** [@NoMercyMike](https://discourse.nodered.org/u/NoMercyMike)\
**Replies:** 14\
**Last updated:** [6 March 2021 11:21 UTC](https://discourse.nodered.org/t/ui-builder-using-data-from-msg-payload-in-computed-classes/41930 "2021-03-06T11:21:14Z")

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Hi, first to say I'm not a developer :frowning: so my experience with VueJS etc. is next to none. What I would like to achieve is using information from msg.payload (eg. msg.payload.icon = "fa-trash-alt", msg.payload.r…

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## [How can i add horizontal scrollbar to Chart?](https://discourse.nodered.org/t/how-can-i-add-horizontal-scrollbar-to-chart/41982)

<div class="topic-metadata">

**Author:** [@PinPat](https://discourse.nodered.org/u/PinPat)\
**Replies:** 3\
**Last updated:** [6 March 2021 10:54 UTC](https://discourse.nodered.org/t/how-can-i-add-horizontal-scrollbar-to-chart/41982 "2021-03-06T10:54:59Z")

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I have a chart showing temperature sensor data vs time. I would like to add a horizontal scroll bar so that i can scroll previously plotted data. Tried my best bust can't find a right way to do it.

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## [How to deploy Node-red to the internet?](https://discourse.nodered.org/t/how-to-deploy-node-red-to-the-internet/41890)

<div class="topic-metadata">

**Author:** [@Reyner](https://discourse.nodered.org/u/Reyner)\
**Replies:** 11\
**Last updated:** [6 March 2021 10:32 UTC](https://discourse.nodered.org/t/how-to-deploy-node-red-to-the-internet/41890 "2021-03-06T10:32:25Z")

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I am having an issue on making Node-red able to be accessed from the internet. Right now, I have made a Node-red flow but the UI only can be accessed when connecting to the same network. I would like to make my UI to be …

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## [Garage open/closed via mqtt to node-red and grafana](https://discourse.nodered.org/t/garage-open-closed-via-mqtt-to-node-red-and-grafana/42124)

<div class="topic-metadata">

**Author:** [@trombose009](https://discourse.nodered.org/u/trombose009)\
**Replies:** 3\
**Last updated:** [6 March 2021 08:00 UTC](https://discourse.nodered.org/t/garage-open-closed-via-mqtt-to-node-red-and-grafana/42124 "2021-03-06T08:00:42Z")

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Hi, I want to visualize the state of my garage. There is a sensor which can send a individual mqtt message to node-red. In the past, I was using an other system so I just sent "open" and "closed". Now I have node-red w…

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