# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=850

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

**Page:** 851

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## [Nodes installed but not available - grey dashed boxes in palette](https://discourse.nodered.org/t/nodes-installed-but-not-available-grey-dashed-boxes-in-palette/14945)

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**Author:** [@Bas](https://discourse.nodered.org/u/Bas)\
**Replies:** 10\
**Last updated:** [6 September 2019 13:36 UTC](https://discourse.nodered.org/t/nodes-installed-but-not-available-grey-dashed-boxes-in-palette/14945 "2019-09-06T13:36:02Z")

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Hi there, After installing a few libraries in Node Red some went fine and the node-red-contrib-modbustcp is not working. I see the nodes in de Palette, but the have a grey dashed box instead of a normal colour. The nod…

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## [Re-deploy a node (or entire flow) on event in node](https://discourse.nodered.org/t/re-deploy-a-node-or-entire-flow-on-event-in-node/2008)

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**Author:** [@Dr.legendaddy](https://discourse.nodered.org/u/Dr.legendaddy)\
**Replies:** 7\
**Last updated:** [6 September 2019 13:10 UTC](https://discourse.nodered.org/t/re-deploy-a-node-or-entire-flow-on-event-in-node/2008 "2019-09-06T13:10:56Z")

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Sorry for already starting the next topic but this is quite a problem for my workflow so I was hoping there was a way to handle the following issue: I have a node that when it hits an error can only recover by being dep…

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## [Increase canvas size? (supersize flows!)](https://discourse.nodered.org/t/increase-canvas-size-supersize-flows/14855)

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**Author:** [@swiftnesses](https://discourse.nodered.org/u/swiftnesses)\
**Replies:** 15\
**Last updated:** [6 September 2019 11:28 UTC](https://discourse.nodered.org/t/increase-canvas-size-supersize-flows/14855 "2019-09-06T11:28:22Z")

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Good day, I've become fairly involved with Node Red and have a few flows that exceed the width of the canvas, can this be increased via a setting? (fingers crossed it can!). Many thanks for this amazing tool.

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## [Serial port fetching data](https://discourse.nodered.org/t/serial-port-fetching-data/15184)

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**Author:** [@Iliyas](https://discourse.nodered.org/u/Iliyas)\
**Replies:** 9\
**Last updated:** [6 September 2019 07:45 UTC](https://discourse.nodered.org/t/serial-port-fetching-data/15184 "2019-09-06T07:45:10Z")

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Hell, I am able to read the data of my device in windows system through serial request but I am not able to read the data from ubuntu serial port.... Can anybody try to help me out?

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## [Subflows. Inputs and outputs not matching between machines](https://discourse.nodered.org/t/subflows-inputs-and-outputs-not-matching-between-machines/15147)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 22\
**Last updated:** [6 September 2019 05:16 UTC](https://discourse.nodered.org/t/subflows-inputs-and-outputs-not-matching-between-machines/15147 "2019-09-06T05:16:06Z")

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I have written a subflow. It works - as best I can say - on all but one machine. All machines send back their temperature reading, a PING reply and that indicates they are working. So: I'm guessing I have the sub-flo…

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## [Field validation problem](https://discourse.nodered.org/t/field-validation-problem/15084)

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**Author:** [@limengsong](https://discourse.nodered.org/u/limengsong)\
**Replies:** 4\
**Last updated:** [5 September 2019 22:37 UTC](https://discourse.nodered.org/t/field-validation-problem/15084 "2019-09-05T22:37:53Z")

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In the blue box as shown, click Edit to bring up the config page. In the config page, the first three fields of the configuration are required. So when you do not fill in the first three fields, the red box will promp…

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## [Sports Score Update/Light Flasher](https://discourse.nodered.org/t/sports-score-update-light-flasher/15161)

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**Author:** [@Exit2Studios](https://discourse.nodered.org/u/Exit2Studios)\
**Replies:** 5\
**Last updated:** [5 September 2019 21:35 UTC](https://discourse.nodered.org/t/sports-score-update-light-flasher/15161 "2019-09-05T21:35:17Z")

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With American Football season upon us, I thought it would be fun to build a sports score notifier that flashes lights team colors when they score. I use an app called "The Score" that sends me updates in real time. I'm…

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## [Ds18b20 only one or two digits](https://discourse.nodered.org/t/ds18b20-only-one-or-two-digits/15172)

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**Author:** [@RudiRuessel](https://discourse.nodered.org/u/RudiRuessel)\
**Replies:** 4\
**Last updated:** [5 September 2019 21:35 UTC](https://discourse.nodered.org/t/ds18b20-only-one-or-two-digits/15172 "2019-09-05T21:35:08Z")

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Hello, is it possible to get my temperature values with only one or two fractional digits? For example with a funktion node?

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## [\[ANSWER\] How to package up node-red applications](https://discourse.nodered.org/t/answer-how-to-package-up-node-red-applications/15174)

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**Author:** [@JoeFinn](https://discourse.nodered.org/u/JoeFinn)\
**Replies:** 0\
**Last updated:** [5 September 2019 20:47 UTC](https://discourse.nodered.org/t/answer-how-to-package-up-node-red-applications/15174 "2019-09-05T20:47:02Z")

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Thanks to @dceejay and @hardillb on the node-red slack who helped me with how to deliver node-red apps. SCENARIO: I want to package up node.js + node-red + some flows + maybe some custom nodes, create an installer (exec…

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## [Exec and daemon nodes break up a data stream](https://discourse.nodered.org/t/exec-and-daemon-nodes-break-up-a-data-stream/10695)

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**Author:** [@drmibell](https://discourse.nodered.org/u/drmibell)\
**Replies:** 70\
**Last updated:** [5 September 2019 17:37 UTC](https://discourse.nodered.org/t/exec-and-daemon-nodes-break-up-a-data-stream/10695 "2019-09-05T17:37:51Z")

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I am trying to use a software-defined radio receiver to get data from a wireless thermometer. The program that controls the radio sends a stream of JSON strings separated by newline characters to its standard output. (Al…

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## [Error connecting to mongodb](https://discourse.nodered.org/t/error-connecting-to-mongodb/15127)

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**Author:** [@rickirea](https://discourse.nodered.org/u/rickirea)\
**Replies:** 6\
**Last updated:** [5 September 2019 14:39 UTC](https://discourse.nodered.org/t/error-connecting-to-mongodb/15127 "2019-09-05T14:39:54Z")

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when i configure a mongo node it shows the error as "MongoError: failed to connect to server \[127.0.0.1:27017\] on first connect \[MongoError: connect ECONNREFUSED 127.0.0.1:27017\]" I cannot connect to MongoDB to store …

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## [Waiting for missing types to be registered: google-iot-core-broker and google-iot-core in](https://discourse.nodered.org/t/waiting-for-missing-types-to-be-registered-google-iot-core-broker-and-google-iot-core-in/15083)

<div class="topic-metadata">

**Author:** [@mikel.garmendia](https://discourse.nodered.org/u/mikel.garmendia)\
**Replies:** 7\
**Last updated:** [5 September 2019 14:15 UTC](https://discourse.nodered.org/t/waiting-for-missing-types-to-be-registered-google-iot-core-broker-and-google-iot-core-in/15083 "2019-09-05T14:15:09Z")

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Hello, I want to use google-iot-core package in a Raspberry Pi, but I'm receiving this error: \[node-red-contrib-google-iot-core/google-iot-core\] TypeError \[ERR\_INVALID\_ARG\_TYPE\]: The "superCtor.prototype" property must…

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## [Unable to install node-red-cf-ready](https://discourse.nodered.org/t/unable-to-install-node-red-cf-ready/15155)

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**Author:** [@alboino](https://discourse.nodered.org/u/alboino)\
**Replies:** 4\
**Last updated:** [5 September 2019 13:48 UTC](https://discourse.nodered.org/t/unable-to-install-node-red-cf-ready/15155 "2019-09-05T13:48:58Z")

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Hi all, I'm trying to install an application that allows the use of node-red in any cloud foundry istance. The project is available at the following link: When I put the command: cf push node-red-cf-exprivia I see …

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## [Exporting data from ds18b20](https://discourse.nodered.org/t/exporting-data-from-ds18b20/15146)

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**Author:** [@RudiRuessel](https://discourse.nodered.org/u/RudiRuessel)\
**Replies:** 19\
**Last updated:** [5 September 2019 13:03 UTC](https://discourse.nodered.org/t/exporting-data-from-ds18b20/15146 "2019-09-05T13:03:02Z")

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Hello, i have two ds18b20 sensors and want to export the data of my two temperature curves so i can put them into excel for example. Is that possible?

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## [How to send multiple values in node-red](https://discourse.nodered.org/t/how-to-send-multiple-values-in-node-red/13889)

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**Author:** [@adamf](https://discourse.nodered.org/u/adamf)\
**Replies:** 29\
**Last updated:** [5 September 2019 11:31 UTC](https://discourse.nodered.org/t/how-to-send-multiple-values-in-node-red/13889 "2019-09-05T11:31:47Z")

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Hi, I am a noob in this. I am working with wireless Vibration and temperature sensor. I want to send an email alert of vibration and temperature. I have created a function node to send a single value. it's working. b…

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## [nanoCUL with MBUS, Node-red](https://discourse.nodered.org/t/nanocul-with-mbus-node-red/15140)

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**Author:** [@krishnavamsi692](https://discourse.nodered.org/u/krishnavamsi692)\
**Replies:** 2\
**Last updated:** [5 September 2019 09:41 UTC](https://discourse.nodered.org/t/nanocul-with-mbus-node-red/15140 "2019-09-05T09:41:50Z")

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Hi All: i need to use node-red with nanoCUL and MBUS. I am able to connect nanoCUL With node-red after connecting i am able to see the message nanoCUL Is connected. Please let me know whether nanoCUL will support No…

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## [Wmbus cul node red](https://discourse.nodered.org/t/wmbus-cul-node-red/14819)

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**Author:** [@smp](https://discourse.nodered.org/u/smp)\
**Replies:** 7\
**Last updated:** [5 September 2019 09:41 UTC](https://discourse.nodered.org/t/wmbus-cul-node-red/14819 "2019-09-05T09:41:48Z")

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hi, is it easy to connect a cul and a wmbus device in node red ?

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## [Another machine won't update NR when I run the command](https://discourse.nodered.org/t/another-machine-wont-update-nr-when-i-run-the-command/14997)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 37\
**Last updated:** [5 September 2019 02:08 UTC](https://discourse.nodered.org/t/another-machine-wont-update-nr-when-i-run-the-command/14997 "2019-09-05T02:08:18Z")

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This is another machine - than the other thread I have. Another machine is/was/still is giving me grief. It isn't coming online when it boots. So I try to look at the NR edit screen. Won't load. SSH into it and it …

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## [\[Version 1.0.0-beta.3\] Cannot read property 'replace' of undefined](https://discourse.nodered.org/t/version-1-0-0-beta-3-cannot-read-property-replace-of-undefined/15095)

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**Author:** [@Qin](https://discourse.nodered.org/u/Qin)\
**Replies:** 2\
**Last updated:** [5 September 2019 01:16 UTC](https://discourse.nodered.org/t/version-1-0-0-beta-3-cannot-read-property-replace-of-undefined/15095 "2019-09-05T01:16:42Z")

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After updating version from 0.20.\* to 1.0.0-beta.3, following statement throw the error as title describe, but var patt = /\\B\\$/g; var Str = '$test'; Str.replace (patt, 'A.B.'); actually it's OK IN 0.20.\*

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## [Dashboard filename path](https://discourse.nodered.org/t/dashboard-filename-path/15111)

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**Author:** [@Ahmed\_elkomya](https://discourse.nodered.org/u/Ahmed_elkomya)\
**Replies:** 8\
**Last updated:** [5 September 2019 00:22 UTC](https://discourse.nodered.org/t/dashboard-filename-path/15111 "2019-09-05T00:22:34Z")

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Hi, Raspberry pi , dashboard problem I have some problem with UI , one or two employee can access the UI .they Fills the entire data for each trainee and save it as file.txt like \[name,age,Gender...etc\] so, the data o…

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## [Error in connection with MongoDB](https://discourse.nodered.org/t/error-in-connection-with-mongodb/7239)

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**Author:** [@Rahul\_Mathavan](https://discourse.nodered.org/u/Rahul_Mathavan)\
**Replies:** 3\
**Last updated:** [4 September 2019 23:54 UTC](https://discourse.nodered.org/t/error-in-connection-with-mongodb/7239 "2019-09-04T23:54:10Z")

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This is the method i have tried to implement the MongoDB. it shows the error as "MongoError: failed to connect to server \[127.0.0.1:27017\] on first connect \[MongoError: connect ECONNREFUSED 127.0.0.1:27017\]" I canno…

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## [Create a bot and deploy it on a website](https://discourse.nodered.org/t/create-a-bot-and-deploy-it-on-a-website/15115)

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**Author:** [@manfredsovi](https://discourse.nodered.org/u/manfredsovi)\
**Replies:** 2\
**Last updated:** [4 September 2019 21:32 UTC](https://discourse.nodered.org/t/create-a-bot-and-deploy-it-on-a-website/15115 "2019-09-04T21:32:02Z")

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Hello everyone I would like to know if it is possible to create a robot and deployed on a website to interact with users.

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## [Google photos upload doesn't work](https://discourse.nodered.org/t/google-photos-upload-doesnt-work/11297)

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**Author:** [@mike67](https://discourse.nodered.org/u/mike67)\
**Replies:** 2\
**Last updated:** [4 September 2019 19:31 UTC](https://discourse.nodered.org/t/google-photos-upload-doesnt-work/11297 "2019-09-04T19:31:52Z")

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Hello I try to upload an image to google photo using the dedicated node. So, I have an ip camera. From this camera, I can access to a file. I save this file on my node-red host, and i would like to upload this image o…

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## [How Can I Catch Error "serial port /dev/rfcomm0 closed unexpectedly"](https://discourse.nodered.org/t/how-can-i-catch-error-serial-port-dev-rfcomm0-closed-unexpectedly/15038)

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**Author:** [@marcpouliot](https://discourse.nodered.org/u/marcpouliot)\
**Replies:** 6\
**Last updated:** [4 September 2019 18:40 UTC](https://discourse.nodered.org/t/how-can-i-catch-error-serial-port-dev-rfcomm0-closed-unexpectedly/15038 "2019-09-04T18:40:09Z")

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Hello, (raspberry pi 2b, node-red v0.19.5) I have a battery operated bluetooth thermometer (testing wine temperature) that I do not use very often... (or too often, I don't know). I switch it off when I do not need i…

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## [Time range switch incorrect date](https://discourse.nodered.org/t/time-range-switch-incorrect-date/15118)

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**Author:** [@Poodlepapa](https://discourse.nodered.org/u/Poodlepapa)\
**Replies:** 3\
**Last updated:** [4 September 2019 18:38 UTC](https://discourse.nodered.org/t/time-range-switch-incorrect-date/15118 "2019-09-04T18:38:09Z")

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I have a flow that is using a time range switch, it almost works but not quite. I think the problem is with the date, it says "invalid date" under the node. I've installed all 3 the dependancies and checked the date an…

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## [Node-Red nodeJS upgrade 8 to 10 or not sometimes](https://discourse.nodered.org/t/node-red-nodejs-upgrade-8-to-10-or-not-sometimes/8103)

<div class="topic-metadata">

**Author:** [@scargill](https://discourse.nodered.org/u/scargill)\
**Replies:** 3\
**Last updated:** [4 September 2019 17:15 UTC](https://discourse.nodered.org/t/node-red-nodejs-upgrade-8-to-10-or-not-sometimes/8103 "2019-09-04T17:15:03Z")

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I know this is likey a daft question but.. I just created a clean Raspbery Pi and used your upgrade script to install Node-Red - it put in NodeJS 10.x But then I tried to use it up upgrade a working (up to date apart f…

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## [Remove the values after fraction](https://discourse.nodered.org/t/remove-the-values-after-fraction/15108)

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**Author:** [@Taqi.haider](https://discourse.nodered.org/u/Taqi.haider)\
**Replies:** 5\
**Last updated:** [4 September 2019 15:53 UTC](https://discourse.nodered.org/t/remove-the-values-after-fraction/15108 "2019-09-04T15:53:48Z")

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I have a Real value like this 230.23456789 . I want to remove the values after fraction. Then the result will be shown like this 230.2. How will i have do it.

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## ["Exec" module missing in node-red](https://discourse.nodered.org/t/exec-module-missing-in-node-red/15102)

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**Author:** [@freduhr](https://discourse.nodered.org/u/freduhr)\
**Replies:** 3\
**Last updated:** [4 September 2019 15:53 UTC](https://discourse.nodered.org/t/exec-module-missing-in-node-red/15102 "2019-09-04T15:53:24Z")

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Hello everyone, On my node-red installation, I can't find the "exec" module in the "advanced" section, it is missing. Is it possible to manually install this module without having to reinstall node-red? My node-red ve…

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## [Maximum Insert Speed for mySQL through network?](https://discourse.nodered.org/t/maximum-insert-speed-for-mysql-through-network/14932)

<div class="topic-metadata">

**Author:** [@AK51](https://discourse.nodered.org/u/AK51)\
**Replies:** 33\
**Last updated:** [4 September 2019 13:51 UTC](https://discourse.nodered.org/t/maximum-insert-speed-for-mysql-through-network/14932 "2019-09-04T13:51:05Z")

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My insert speed is 200Hz through local network to a mySQL server. I found out the delay is about 30 seconds.... It seems a lot as the whole things is through Wifi and there are only 4 computers. It shouldn't be the netwo…

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## [Display serial input into debug](https://discourse.nodered.org/t/display-serial-input-into-debug/15079)

<div class="topic-metadata">

**Author:** [@prince](https://discourse.nodered.org/u/prince)\
**Replies:** 14\
**Last updated:** [4 September 2019 13:19 UTC](https://discourse.nodered.org/t/display-serial-input-into-debug/15079 "2019-09-04T13:19:10Z")

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Hi There, I'm trying to get the serial data send to my hardware in the debug output.I'm not sure whether it will send the data without any function node.below is the flow i have created.Kindly guide me to get serial dat…

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