# Latest

**URL:** https://discourse.nodered.org/latest.md?page=846

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

**Page:** 847

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## [Display hourly production in bar graph](https://discourse.nodered.org/t/display-hourly-production-in-bar-graph/43591)

<div class="topic-metadata">

**Author:** [@sahsha](https://discourse.nodered.org/u/sahsha)\
**Replies:** 8\
**Last updated:** [3 April 2021 12:08 UTC](https://discourse.nodered.org/t/display-hourly-production-in-bar-graph/43591 "2021-04-03T12:08:35Z")

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Hello! I Need to display hourly production (24 hr) on a bar chart, below given is the flow I've created : sharing only half of the flow due to character limitation of 32000. \[{"id":"887bdbcf.967d28","type":"function"…

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## [Worldmap - collision of marker names in different layers](https://discourse.nodered.org/t/worldmap-collision-of-marker-names-in-different-layers/43539)

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**Author:** [@rogerjames99](https://discourse.nodered.org/u/rogerjames99)\
**Replies:** 5\
**Last updated:** [3 April 2021 10:47 UTC](https://discourse.nodered.org/t/worldmap-collision-of-marker-names-in-different-layers/43539 "2021-04-03T10:47:08Z")

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I was hoping that marker names only had to be unique in individual layers.But this is not the case. So how can I check for the existence of a existing marker name so I can modify the one I am about to add to something di…

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## [From MSSQL to csv to email](https://discourse.nodered.org/t/from-mssql-to-csv-to-email/14315)

<div class="topic-metadata">

**Author:** [@petrdolejs](https://discourse.nodered.org/u/petrdolejs)\
**Replies:** 6\
**Last updated:** [3 April 2021 09:29 UTC](https://discourse.nodered.org/t/from-mssql-to-csv-to-email/14315 "2021-04-03T09:29:10Z")

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Hello, little problem here. I'm reading data from MSSQL and I want them to put in csv file(create that file and put in) and after that send that by email. I think it should be easy but I can't figure that. Here are my n…

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## [Problem to use node-red-contrib-telegrambot](https://discourse.nodered.org/t/problem-to-use-node-red-contrib-telegrambot/43512)

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**Author:** [@ThibautRuy](https://discourse.nodered.org/u/ThibautRuy)\
**Replies:** 3\
**Last updated:** [3 April 2021 08:21 UTC](https://discourse.nodered.org/t/problem-to-use-node-red-contrib-telegrambot/43512 "2021-04-03T08:21:33Z")

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Hi, I am using the node-red-contrib-telegrambot to send messages and receive answers from my bot, but so far I do not get anything back. I think I properly set up my bot and I have received my API token I set up my Bo…

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## [How to order webcam node capture on the command page](https://discourse.nodered.org/t/how-to-order-webcam-node-capture-on-the-command-page/43493)

<div class="topic-metadata">

**Author:** [@12345](https://discourse.nodered.org/u/12345)\
**Replies:** 11\
**Last updated:** [3 April 2021 07:58 UTC](https://discourse.nodered.org/t/how-to-order-webcam-node-capture-on-the-command-page/43493 "2021-04-03T07:58:55Z")

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I want auto capture with ui-webcam without having to switch to the dashboard. What should i do?

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## [Control Panasonic TV with Node Red](https://discourse.nodered.org/t/control-panasonic-tv-with-node-red/12923)

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**Author:** [@nodecentral](https://discourse.nodered.org/u/nodecentral)\
**Replies:** 55\
**Last updated:** [3 April 2021 05:43 UTC](https://discourse.nodered.org/t/control-panasonic-tv-with-node-red/12923 "2021-04-03T05:43:47Z")

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Hi I’ve come across some javascript code to control a Panasonic tv, please could someone help me to work this into a flow ? var VieraJS = require("viera.js-g30r93g"); var viera = new VieraJS("ipAddress"); vier…

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## [Sending Data from file in node to a dashboard table](https://discourse.nodered.org/t/sending-data-from-file-in-node-to-a-dashboard-table/24073)

<div class="topic-metadata">

**Author:** [@Munier](https://discourse.nodered.org/u/Munier)\
**Replies:** 27\
**Last updated:** [3 April 2021 04:22 UTC](https://discourse.nodered.org/t/sending-data-from-file-in-node-to-a-dashboard-table/24073 "2021-04-03T04:22:17Z")

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I want to send data from file in node to ui table node for a display in node-red dashboard. How can I go about doing that?

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## [Looking for Guidance](https://discourse.nodered.org/t/looking-for-guidance/43579)

<div class="topic-metadata">

**Author:** [@kpldd](https://discourse.nodered.org/u/kpldd)\
**Replies:** 2\
**Last updated:** [3 April 2021 04:06 UTC](https://discourse.nodered.org/t/looking-for-guidance/43579 "2021-04-03T04:06:38Z")

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I have Insteon based switches/keypads throughout my home. Using the keypad, I wanted to turn on a group of Phillips Hue lights (in this case, lights in my living room). When turned on, I want them to be a cool white te…

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## [Problem with EXEC node and command line parameters](https://discourse.nodered.org/t/problem-with-exec-node-and-command-line-parameters/43542)

<div class="topic-metadata">

**Author:** [@Tontze](https://discourse.nodered.org/u/Tontze)\
**Replies:** 10\
**Last updated:** [3 April 2021 03:33 UTC](https://discourse.nodered.org/t/problem-with-exec-node-and-command-line-parameters/43542 "2021-04-03T03:33:31Z")

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Im trying to execute and get output to debug node. My command is : sudo python3 read\_wavemini.py 2920004430 10 It looks like it does not understand command line options: 2.4.2021 klo 13.33.41node: 734014ef.7c82a4 msg.…

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## [Ping Network Devices From a List](https://discourse.nodered.org/t/ping-network-devices-from-a-list/43563)

<div class="topic-metadata">

**Author:** [@Broutech](https://discourse.nodered.org/u/Broutech)\
**Replies:** 17\
**Last updated:** [2 April 2021 23:42 UTC](https://discourse.nodered.org/t/ping-network-devices-from-a-list/43563 "2021-04-02T23:42:11Z")

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Good day, I am looking for a way to ping network devices (that I specify) from a list or database in Node-RED. I am using the "ping" node at the moment but I have to use one ping node per device which is very time cons…

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## [Run a google script from a node](https://discourse.nodered.org/t/run-a-google-script-from-a-node/43564)

<div class="topic-metadata">

**Author:** [@kusi](https://discourse.nodered.org/u/kusi)\
**Replies:** 5\
**Last updated:** [2 April 2021 22:58 UTC](https://discourse.nodered.org/t/run-a-google-script-from-a-node/43564 "2021-04-02T22:58:16Z")

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How do I run a google script from a node? The most obvioius way it to use the REST API via HTTP POST Calling a google script involves a redirect (HTTP 302 moved temporarily). The redirect is not handled with the "htt…

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## [Send picture telegram - NO USB CAMERA, the nightmare continues](https://discourse.nodered.org/t/send-picture-telegram-no-usb-camera-the-nightmare-continues/43478)

<div class="topic-metadata">

**Author:** [@Marty1982](https://discourse.nodered.org/u/Marty1982)\
**Replies:** 5\
**Last updated:** [2 April 2021 22:46 UTC](https://discourse.nodered.org/t/send-picture-telegram-no-usb-camera-the-nightmare-continues/43478 "2021-04-02T22:46:16Z")

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Hi all! I'm working on this project again (Send picture telegram - NO USB CAMERA - #38 by Marty1982), but i'm stuck on the same place over again. The thing is that i can upload a picture via telegram, the node can recog…

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## [Why my nodered cannot detect USB device on my raspberrry pi](https://discourse.nodered.org/t/why-my-nodered-cannot-detect-usb-device-on-my-raspberrry-pi/43572)

<div class="topic-metadata">

**Author:** [@alex1](https://discourse.nodered.org/u/alex1)\
**Replies:** 3\
**Last updated:** [2 April 2021 20:53 UTC](https://discourse.nodered.org/t/why-my-nodered-cannot-detect-usb-device-on-my-raspberrry-pi/43572 "2021-04-02T20:53:23Z")

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## [Inject node only fires if msg.payload is defined?](https://discourse.nodered.org/t/inject-node-only-fires-if-msg-payload-is-defined/43476)

<div class="topic-metadata">

**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 9\
**Last updated:** [2 April 2021 17:25 UTC](https://discourse.nodered.org/t/inject-node-only-fires-if-msg-payload-is-defined/43476 "2021-04-02T17:25:16Z")

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Inject node only fires if msg.payload defined? So, msg.payload as any value, inject node fires when clicked. But if msg.\* exists, but no msg.payload exits inject node does not fire. It is kind of a pain to add a chang…

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## [Suggestion, when exporting a specific flow, name the downloaded file to the name of the flow tab?](https://discourse.nodered.org/t/suggestion-when-exporting-a-specific-flow-name-the-downloaded-file-to-the-name-of-the-flow-tab/43566)

<div class="topic-metadata">

**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 0\
**Last updated:** [2 April 2021 17:24 UTC](https://discourse.nodered.org/t/suggestion-when-exporting-a-specific-flow-name-the-downloaded-file-to-the-name-of-the-flow-tab/43566 "2021-04-02T17:24:48Z")

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Suggestion, when exporting a specific flow, entire flow on tab, name the downloaded file to the name of the flow tab? For example, if the active tab in the editor is 'my flow', if I do an export of that tab, name the fl…

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## [Node-Red connection with Emotiv Bcı](https://discourse.nodered.org/t/node-red-connection-with-emotiv-bci/43548)

<div class="topic-metadata">

**Author:** [@engineerrules](https://discourse.nodered.org/u/engineerrules)\
**Replies:** 7\
**Last updated:** [2 April 2021 16:02 UTC](https://discourse.nodered.org/t/node-red-connection-with-emotiv-bci/43548 "2021-04-02T16:02:28Z")

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Hello Friends; How can ı connect with Node-Red and emotiv? Someone can say sth about it :confused:

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## [Catch Com S7 error](https://discourse.nodered.org/t/catch-com-s7-error/43557)

<div class="topic-metadata">

**Author:** [@jolrom](https://discourse.nodered.org/u/jolrom)\
**Replies:** 1\
**Last updated:** [2 April 2021 15:46 UTC](https://discourse.nodered.org/t/catch-com-s7-error/43557 "2021-04-02T15:46:22Z")

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Hello, I'm using the palette node-red-contrib-s7 to collect data from a PLC S71500. The communication works nicely but I want to get the error if the connexion fail. For example if I unplug my PLC I see the error in th…

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## [Small engine dyno need help to reset my counter after run](https://discourse.nodered.org/t/small-engine-dyno-need-help-to-reset-my-counter-after-run/43215)

<div class="topic-metadata">

**Author:** [@dirtydredrt](https://discourse.nodered.org/u/dirtydredrt)\
**Replies:** 75\
**Last updated:** [2 April 2021 14:28 UTC](https://discourse.nodered.org/t/small-engine-dyno-need-help-to-reset-my-counter-after-run/43215 "2021-04-02T14:28:35Z")

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Using a raspberry pi and a hall effects sensor to capture shaft rpm. this code will give me the rpm. but after a run i need to start over with zero rpm. this couter just keepd adding the rpm every test run My function…

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## [EXEC node can not change directory](https://discourse.nodered.org/t/exec-node-can-not-change-directory/43522)

<div class="topic-metadata">

**Author:** [@sweetwater](https://discourse.nodered.org/u/sweetwater)\
**Replies:** 3\
**Last updated:** [2 April 2021 13:04 UTC](https://discourse.nodered.org/t/exec-node-can-not-change-directory/43522 "2021-04-02T13:04:53Z")

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Running NODE RED on a Raspberry PI and i have had great success with it . But there is one strange problem I am stuck on: I have a tar file called "dist.tar" in the directory called /home/pi/sweetwater/public When I …

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## [Triggering events via GET Requests/QR Codes in Home Assistant](https://discourse.nodered.org/t/triggering-events-via-get-requests-qr-codes-in-home-assistant/43549)

<div class="topic-metadata">

**Author:** [@nuvious](https://discourse.nodered.org/u/nuvious)\
**Replies:** 0\
**Last updated:** [2 April 2021 11:49 UTC](https://discourse.nodered.org/t/triggering-events-via-get-requests-qr-codes-in-home-assistant/43549 "2021-04-02T11:49:19Z")

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I generally wanted to be able to trigger events in my house via QR code. Have a very specific use case in my implementation but this flow could easily be modified to trigger lighting events, launch media, or do whatever …

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## [GPIO not available via NODE-RED](https://discourse.nodered.org/t/gpio-not-available-via-node-red/41814)

<div class="topic-metadata">

**Author:** [@MFMF](https://discourse.nodered.org/u/MFMF)\
**Replies:** 5\
**Last updated:** [2 April 2021 11:16 UTC](https://discourse.nodered.org/t/gpio-not-available-via-node-red/41814 "2021-04-02T11:16:38Z")

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Hello together, i saw all topics which are similar to mine, but still have the problem that my GPIO In/Out Nodes in NODE-RED doesnt work anymore. I dont know why. Wheter i have wrong config or else. I can see the gpio …

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## [How to split an array without split node](https://discourse.nodered.org/t/how-to-split-an-array-without-split-node/43543)

<div class="topic-metadata">

**Author:** [@ivexy24](https://discourse.nodered.org/u/ivexy24)\
**Replies:** 4\
**Last updated:** [2 April 2021 10:52 UTC](https://discourse.nodered.org/t/how-to-split-an-array-without-split-node/43543 "2021-04-02T10:52:16Z")

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I want to know how can I split an array without having to use the split node. I want to do it in the javascript file of my custom node.Thanks

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## [TypeError: Cannot read property 'length' of undefined](https://discourse.nodered.org/t/typeerror-cannot-read-property-length-of-undefined/43503)

<div class="topic-metadata">

**Author:** [@gaurav\_95](https://discourse.nodered.org/u/gaurav_95)\
**Replies:** 3\
**Last updated:** [2 April 2021 10:36 UTC](https://discourse.nodered.org/t/typeerror-cannot-read-property-length-of-undefined/43503 "2021-04-02T10:36:40Z")

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1 Apr 14:42:55 - \[error\] \[http request:917d3d4e.b2d\] no response from server 1 Apr 14:42:55 - \[error\] \[function:4b8a42b9.33508c\] TypeError: Cannot read property 'length' of undefined 1 Apr 14:42:55 - \[error\] \[function:…

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## [Bluetooth Android box](https://discourse.nodered.org/t/bluetooth-android-box/43527)

<div class="topic-metadata">

**Author:** [@akszyn\_pl](https://discourse.nodered.org/u/akszyn_pl)\
**Replies:** 0\
**Last updated:** [2 April 2021 00:33 UTC](https://discourse.nodered.org/t/bluetooth-android-box/43527 "2021-04-02T00:33:11Z")

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can you use node-red to add bluetooth to a device that does not have it? I have an Android box device without bluetooth with installed home assistant and bluetooth dongle. I have tried many commands on the command line…

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## [Multi MQTT and function](https://discourse.nodered.org/t/multi-mqtt-and-function/43537)

<div class="topic-metadata">

**Author:** [@yingkhun](https://discourse.nodered.org/u/yingkhun)\
**Replies:** 7\
**Last updated:** [2 April 2021 10:05 UTC](https://discourse.nodered.org/t/multi-mqtt-and-function/43537 "2021-04-02T10:05:46Z")

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Hi I just started learning NodeRED I have some question about Multi MQTT input to function I have 5 MQTT subscribe topic value (update every 5 sec) stage (retained messages) auto (retained messages) max (retained …

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## [How to create slider in dashboard template](https://discourse.nodered.org/t/how-to-create-slider-in-dashboard-template/13992)

<div class="topic-metadata">

**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 16\
**Last updated:** [2 April 2021 08:57 UTC](https://discourse.nodered.org/t/how-to-create-slider-in-dashboard-template/13992 "2021-04-02T08:57:53Z")

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Any idea what I'm doing wrong here? I am trying to create a lighting automation, by storing values for individual light fixings (as well as scenes / presets for multiple fixtures) in an object in context memory. The obj…

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## [Exec stdout and SSH](https://discourse.nodered.org/t/exec-stdout-and-ssh/43532)

<div class="topic-metadata">

**Author:** [@leftymuller](https://discourse.nodered.org/u/leftymuller)\
**Replies:** 4\
**Last updated:** [2 April 2021 08:19 UTC](https://discourse.nodered.org/t/exec-stdout-and-ssh/43532 "2021-04-02T08:19:58Z")

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G'Day all! I am SSH'ing to other pi's to get their CPU load and Temp It runs and gives output in a shell however node-red isnt seeing it because its not stdout it runs locally fine. ssh -l pi 192.168.2.246 top -d 0.5…

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## [Google Nest new setup](https://discourse.nodered.org/t/google-nest-new-setup/43538)

<div class="topic-metadata">

**Author:** [@MagicGit](https://discourse.nodered.org/u/MagicGit)\
**Replies:** 0\
**Last updated:** [2 April 2021 08:19 UTC](https://discourse.nodered.org/t/google-nest-new-setup/43538 "2021-04-02T08:19:04Z")

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I'm new to using Google Nest Thermostat with Node-Red. I've created a new account and project with Google developers which differs from any of the examples I've found here. I've been allocated by Google OAuth client ID…

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## [Counter node loses count on upgrade](https://discourse.nodered.org/t/counter-node-loses-count-on-upgrade/43440)

<div class="topic-metadata">

**Author:** [@mikefila](https://discourse.nodered.org/u/mikefila)\
**Replies:** 23\
**Last updated:** [2 April 2021 06:58 UTC](https://discourse.nodered.org/t/counter-node-loses-count-on-upgrade/43440 "2021-04-02T06:58:11Z")

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Hi, I've run into a problem where I lose my information from a counter node. The last 2 upgrades it's reset to it's initial value. I have context enabled in settings.js. I can see the file, the value is correct. I feel …

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## [Rebuilding Node-Red - stuck with requestor](https://discourse.nodered.org/t/rebuilding-node-red-stuck-with-requestor/43530)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 1\
**Last updated:** [2 April 2021 06:18 UTC](https://discourse.nodered.org/t/rebuilding-node-red-stuck-with-requestor/43530 "2021-04-02T06:18:08Z")

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Alas last night a macine's SD card died. I have a backup of the flow/s but there are a lot of nodes which need installing. I'm guessing I may have to do it from the CLI, as this is what I see when I get to the GUI. An…

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