# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=507

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

**Page:** 508

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## [Why can't I connect LDR sensor?](https://discourse.nodered.org/t/why-cant-i-connect-ldr-sensor/49809)

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**Author:** [@owmath](https://discourse.nodered.org/u/owmath)\
**Replies:** 2\
**Last updated:** [17 August 2021 00:51 UTC](https://discourse.nodered.org/t/why-cant-i-connect-ldr-sensor/49809 "2021-08-17T00:51:05Z")

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1- First of all I have StandardFirmata loaded for my Arduino board connected to COM4 port: 2- After opening Node Red and Deploying, only the LED works and the LDR does not connect 3- Both are connected to the same…

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## [Http in receive a post](https://discourse.nodered.org/t/http-in-receive-a-post/49808)

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**Author:** [@zamzon](https://discourse.nodered.org/u/zamzon)\
**Replies:** 4\
**Last updated:** [16 August 2021 21:39 UTC](https://discourse.nodered.org/t/http-in-receive-a-post/49808 "2021-08-16T21:39:23Z")

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Hi I need to receive data from a datalogger, it post the data every 15min. But how do i set this up in NodeRED. Do I need to install a webserver or can i use port 1880 ? I also did try to make a test to see if it wor…

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## [Memory limits on Rpi processing chart data](https://discourse.nodered.org/t/memory-limits-on-rpi-processing-chart-data/49805)

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**Author:** [@trust](https://discourse.nodered.org/u/trust)\
**Replies:** 5\
**Last updated:** [16 August 2021 19:44 UTC](https://discourse.nodered.org/t/memory-limits-on-rpi-processing-chart-data/49805 "2021-08-16T19:44:19Z")

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I'm using Pi zero w and Rpi3s with a custom BMS running node-red for a user interface. One of the options is displaying log data, saved as a CSV file. I process it and feed it to charts based on selected criteria for dis…

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## [How increase the size of ui-template](https://discourse.nodered.org/t/how-increase-the-size-of-ui-template/49804)

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**Author:** [@oualid](https://discourse.nodered.org/u/oualid)\
**Replies:** 2\
**Last updated:** [16 August 2021 19:03 UTC](https://discourse.nodered.org/t/how-increase-the-size-of-ui-template/49804 "2021-08-16T19:03:14Z")

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hi, I create a table which contain a list of events. I want to increase the size of ui-template in order to display all the table in page and without using the scroll. I looked for a solution in the internet but i didn'…

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## [converting number](https://discourse.nodered.org/t/converting-number/15294)

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**Author:** [@bunicht](https://discourse.nodered.org/u/bunicht)\
**Replies:** 5\
**Last updated:** [16 August 2021 18:22 UTC](https://discourse.nodered.org/t/converting-number/15294 "2021-08-16T18:22:09Z")

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Hello!Im new to this and i'm trying to make a split of a number. The payload comes from Mqtt,actually a IFM AL1920 I/O link module I'm trying to split it into 6 payloads so i can read the temp, level and status of the m…

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## [Safe tab characters in template nodes?](https://discourse.nodered.org/t/safe-tab-characters-in-template-nodes/49763)

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**Author:** [@hepcat72](https://discourse.nodered.org/u/hepcat72)\
**Replies:** 2\
**Last updated:** [16 August 2021 16:03 UTC](https://discourse.nodered.org/t/safe-tab-characters-in-template-nodes/49763 "2021-08-16T16:03:16Z")

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When I got back from vacation, I noticed my flows had reverted to some older version. I found the latest version in .node-red/flows\_golrath...json but the flows file that was being used was .node-red/flows\_golrathlocaldo…

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## [How to push Node-RED to GitHub using access tokens](https://discourse.nodered.org/t/how-to-push-node-red-to-github-using-access-tokens/49796)

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**Author:** [@portfedh](https://discourse.nodered.org/u/portfedh)\
**Replies:** 4\
**Last updated:** [16 August 2021 15:18 UTC](https://discourse.nodered.org/t/how-to-push-node-red-to-github-using-access-tokens/49796 "2021-08-16T15:18:09Z")

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I'm having a bit of an issue pushing my Node-RED project to GitHub I'm using Nose-RED version 2.0.5: Maintenance Release and node js v12.22.5 This is what I've done so far: I created an empty repo in github and copie…

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## [R-Pi 4 serial port truncates messages](https://discourse.nodered.org/t/r-pi-4-serial-port-truncates-messages/49692)

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**Author:** [@dsplitz](https://discourse.nodered.org/u/dsplitz)\
**Replies:** 12\
**Last updated:** [16 August 2021 13:51 UTC](https://discourse.nodered.org/t/r-pi-4-serial-port-truncates-messages/49692 "2021-08-16T13:51:17Z")

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I can't be sure if this is a node-red or R-PI issue. It's a low runner so I can work around it but thought someone may want to investigate who knows how to get under the hood. I've seen this issue on two separate R-PI 4…

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## [Delaying the whole flow](https://discourse.nodered.org/t/delaying-the-whole-flow/49776)

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**Author:** [@subwayfootlong](https://discourse.nodered.org/u/subwayfootlong)\
**Replies:** 6\
**Last updated:** [16 August 2021 13:10 UTC](https://discourse.nodered.org/t/delaying-the-whole-flow/49776 "2021-08-16T13:10:22Z")

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Hello all. noob node-red user here Is there a node or a similar function to delay the whole flow for a set period? Like in arduino where you can use delay(500) to delay for 500ms? From what I know the delay node just …

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## [Jsonata in Node-Red not working as for example on try.jasonata or in the Node-Red Test UI](https://discourse.nodered.org/t/jsonata-in-node-red-not-working-as-for-example-on-try-jasonata-or-in-the-node-red-test-ui/49780)

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**Author:** [@aschaepper](https://discourse.nodered.org/u/aschaepper)\
**Replies:** 2\
**Last updated:** [16 August 2021 10:56 UTC](https://discourse.nodered.org/t/jsonata-in-node-red-not-working-as-for-example-on-try-jasonata-or-in-the-node-red-test-ui/49780 "2021-08-16T10:56:45Z")

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Hello together I'm currently working with jsonata to transform my SQL Input. I'm now at a point where I'm really lost and have no Idea why its not working. I have this json file comming from the SQL output node: \[ …

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## [How to insert raw data into the database?](https://discourse.nodered.org/t/how-to-insert-raw-data-into-the-database/49778)

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**Author:** [@Uarik](https://discourse.nodered.org/u/Uarik)\
**Replies:** 2\
**Last updated:** [16 August 2021 08:36 UTC](https://discourse.nodered.org/t/how-to-insert-raw-data-into-the-database/49778 "2021-08-16T08:36:38Z")

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The nodes in the screenshot record the user's message and save it to the mysql table. But, if the user enters text with quotation marks (""), they get to the database as '& quot;' How do I insert raw data into the data…

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## [Timer and switch](https://discourse.nodered.org/t/timer-and-switch/49758)

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**Author:** [@Casper3101](https://discourse.nodered.org/u/Casper3101)\
**Replies:** 5\
**Last updated:** [16 August 2021 05:59 UTC](https://discourse.nodered.org/t/timer-and-switch/49758 "2021-08-16T05:59:42Z")

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Can someone please help. I am new to all this. I am trying to create a simple circuit. What I am after is for a timer to activate a relay at 10pm for my father in laws bedside lamp. Along side this I need a push button t…

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## [Dark Mode Theme - Looking rather pale](https://discourse.nodered.org/t/dark-mode-theme-looking-rather-pale/49768)

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**Author:** [@Gunner](https://discourse.nodered.org/u/Gunner)\
**Replies:** 2\
**Last updated:** [15 August 2021 21:51 UTC](https://discourse.nodered.org/t/dark-mode-theme-looking-rather-pale/49768 "2021-08-15T21:51:11Z")

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I decided to delve further into the dark (mode) side :stuck\_out\_tongue: This time with the editor (BTW, the Dashboard is an easy to change Theme option, why not the Editor??) But after repeatedly following the directio…

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## [HTTP In - how to not parse based on content-type?](https://discourse.nodered.org/t/http-in-how-to-not-parse-based-on-content-type/49766)

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**Author:** [@lowlyocean](https://discourse.nodered.org/u/lowlyocean)\
**Replies:** 2\
**Last updated:** [15 August 2021 21:31 UTC](https://discourse.nodered.org/t/http-in-how-to-not-parse-based-on-content-type/49766 "2021-08-15T21:31:02Z")

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Hi all, I need the raw body of the POST request coming in to my endpoint as part of a SHA-256 signature verification. Unfortunately I can't control the Content-Type of the incoming request (it's fixed as application/json…

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## [Not able to install SQLite](https://discourse.nodered.org/t/not-able-to-install-sqlite/49745)

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**Author:** [@KratosReus](https://discourse.nodered.org/u/KratosReus)\
**Replies:** 12\
**Last updated:** [15 August 2021 21:13 UTC](https://discourse.nodered.org/t/not-able-to-install-sqlite/49745 "2021-08-15T21:13:02Z")

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Hi everyone, I have been trying to install the SQLite node but it always triggers some errors: Blockquote---------------------------------------------------------- 2021-08-15T12:02:32.722Z Install : node-red-node-sql…

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## [Splitting apart and recombining a payload](https://discourse.nodered.org/t/splitting-apart-and-recombining-a-payload/49754)

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**Author:** [@Sgooch](https://discourse.nodered.org/u/Sgooch)\
**Replies:** 6\
**Last updated:** [15 August 2021 21:09 UTC](https://discourse.nodered.org/t/splitting-apart-and-recombining-a-payload/49754 "2021-08-15T21:09:50Z")

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I have an incoming payload that looks something like this: "person:80%,Car:40%,Dog:38%,Camera1" or in different terms: "object1:80% sure,object2:40% sure,Source-Camera1" I would like to take ONLY the FIRST object and …

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## [Serial port COM4 error: Error: Opening COM4: File not found](https://discourse.nodered.org/t/serial-port-com4-error-error-opening-com4-file-not-found/49756)

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**Author:** [@owmath](https://discourse.nodered.org/u/owmath)\
**Replies:** 14\
**Last updated:** [15 August 2021 19:21 UTC](https://discourse.nodered.org/t/serial-port-com4-error-error-opening-com4-file-not-found/49756 "2021-08-15T19:21:40Z")

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Good afternoon, i have a problem starting my node-red. when I run the command to open "node-red", it shows me serial port COM4 error: Error: Opening COM4: File not found. Before this error happened, I managed to perfor…

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## [Upgrading RPi4 to 64-bit - Node-Red Bombs](https://discourse.nodered.org/t/upgrading-rpi4-to-64-bit-node-red-bombs/49192)

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**Author:** [@scargill](https://discourse.nodered.org/u/scargill)\
**Replies:** 40\
**Last updated:** [13 August 2021 19:40 UTC](https://discourse.nodered.org/t/upgrading-rpi4-to-64-bit-node-red-bombs/49192 "2021-08-13T19:40:36Z")

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This could well be nothing to do with NR but I have to start somewhere. As some of you know, I run Node-Red 24-7 on an RPi4 32 bit - EVERYTHING up to date.... Except as I just found out - if I wanted to re-install Graf…

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## [Dockerfile RUN apk add - Permission denied](https://discourse.nodered.org/t/dockerfile-run-apk-add-permission-denied/49746)

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**Author:** [@novski](https://discourse.nodered.org/u/novski)\
**Replies:** 0\
**Last updated:** [15 August 2021 12:51 UTC](https://discourse.nodered.org/t/dockerfile-run-apk-add-permission-denied/49746 "2021-08-15T12:51:13Z")

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As of this Problem I changed my docker-compose to take the Dockerfile instead of directly nodered/node-red:latest and added a RUN in to my Dockerfile to add a package, but that fails because of Permissions denied. What…

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## [Pushover Configuration Help please](https://discourse.nodered.org/t/pushover-configuration-help-please/49743)

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**Author:** [@daxkamala](https://discourse.nodered.org/u/daxkamala)\
**Replies:** 1\
**Last updated:** [15 August 2021 12:45 UTC](https://discourse.nodered.org/t/pushover-configuration-help-please/49743 "2021-08-15T12:45:39Z")

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I'n trying to get going with pushover. Account set up and can send from web interface. On the node, there are two fields: User Key and API Token. I can't find any reference to User Key in the documentation except one p…

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## [Self Signed Certificate in Certificate Chain when upload data to Postgresql cloud database](https://discourse.nodered.org/t/self-signed-certificate-in-certificate-chain-when-upload-data-to-postgresql-cloud-database/49640)

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**Author:** [@Bond](https://discourse.nodered.org/u/Bond)\
**Replies:** 7\
**Last updated:** [15 August 2021 11:55 UTC](https://discourse.nodered.org/t/self-signed-certificate-in-certificate-chain-when-upload-data-to-postgresql-cloud-database/49640 "2021-08-15T11:55:37Z")

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Hi all, I was playing around with Postgresql on my local network and everything went very well. Until I change the database to a cloud server, I receive the error: "Self Signed Certificate in Certificate Chain". I assum…

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## [Node-red-contrib-facemask-detector fails to install](https://discourse.nodered.org/t/node-red-contrib-facemask-detector-fails-to-install/49720)

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**Author:** [@pcborges](https://discourse.nodered.org/u/pcborges)\
**Replies:** 14\
**Last updated:** [15 August 2021 10:30 UTC](https://discourse.nodered.org/t/node-red-contrib-facemask-detector-fails-to-install/49720 "2021-08-15T10:30:10Z")

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Hi, I am trying to experiment with the node-red-contrib-facemask-detector but it never installs successfully. After some research I installed what seems to be dependencies: node-red-contrib-tf-function node-red-contri…

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## [How to pass information from MySQL querry to telegram bot message?](https://discourse.nodered.org/t/how-to-pass-information-from-mysql-querry-to-telegram-bot-message/49740)

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**Author:** [@Uarik](https://discourse.nodered.org/u/Uarik)\
**Replies:** 3\
**Last updated:** [15 August 2021 10:12 UTC](https://discourse.nodered.org/t/how-to-pass-information-from-mysql-querry-to-telegram-bot-message/49740 "2021-08-15T10:12:54Z")

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What am I doing wrong?

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## [Exchanging data between flows over VPN](https://discourse.nodered.org/t/exchanging-data-between-flows-over-vpn/48192)

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**Author:** [@tovo\_o](https://discourse.nodered.org/u/tovo_o)\
**Replies:** 28\
**Last updated:** [15 August 2021 08:21 UTC](https://discourse.nodered.org/t/exchanging-data-between-flows-over-vpn/48192 "2021-08-15T08:21:51Z")

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What would be the best way to do this? I read that MQTT is not gonna be happy over VPN. My networking knowledge is leaving me at a loss as to which black hole to dive down on this one. I really just want to make a sim…

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## [Node-red-contrib-fritz looking for working example for setCallBarringEntry](https://discourse.nodered.org/t/node-red-contrib-fritz-looking-for-working-example-for-setcallbarringentry/49736)

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**Author:** [@khfischbach](https://discourse.nodered.org/u/khfischbach)\
**Replies:** 0\
**Last updated:** [15 August 2021 08:07 UTC](https://discourse.nodered.org/t/node-red-contrib-fritz-looking-for-working-example-for-setcallbarringentry/49736 "2021-08-15T08:07:00Z")

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Hi, I have searched for an working example for the action setCallBarringEntry within node-red-contrib-fritz but did not find one. The main problem is the array "number". "\_":"\<value" is not accepted. I have tried fir…

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## [Trying to update. old version no longer supported](https://discourse.nodered.org/t/trying-to-update-old-version-no-longer-supported/49731)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 13\
**Last updated:** [15 August 2021 08:01 UTC](https://discourse.nodered.org/t/trying-to-update-old-version-no-longer-supported/49731 "2021-08-15T08:01:13Z")

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Sorry, but I want to ask to be sure. Running Node-RED update for user pi at /home/pi on raspbian Nodejs 10 is no longer supported. You can update to the latest Node-RED 1.x version by adding --nodered-version="1.3.5…

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## [Spit a payload and get rid of the last bracket](https://discourse.nodered.org/t/spit-a-payload-and-get-rid-of-the-last-bracket/49721)

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**Author:** [@edstobi](https://discourse.nodered.org/u/edstobi)\
**Replies:** 6\
**Last updated:** [14 August 2021 22:11 UTC](https://discourse.nodered.org/t/spit-a-payload-and-get-rid-of-the-last-bracket/49721 "2021-08-14T22:11:53Z")

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Hi I am having a string 0.1.1.1|00:03:CD:01:6F:BA (Mobotix AG) 0.1.1.111|C2:4D:69:BB:65:A4 (American Power Conversion) 0.1.1.133|7C:87:AB:CD:EF:GH (Hewlett Packard) ............ Then I am trying to brin the strin into …

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## [File path question (Linux vs Windows)](https://discourse.nodered.org/t/file-path-question-linux-vs-windows/49702)

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**Author:** [@grant1](https://discourse.nodered.org/u/grant1)\
**Replies:** 3\
**Last updated:** [14 August 2021 15:54 UTC](https://discourse.nodered.org/t/file-path-question-linux-vs-windows/49702 "2021-08-14T15:54:22Z")

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Hopefully an easy question about file paths for the bi-lingual Linux & Windows folks... I have a flow that saves a file to a shared folder on a Synology NAS. I use the moment node (as instructed in this post) to create …

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## [Ffmpeg-spawn - import/deploy issue](https://discourse.nodered.org/t/ffmpeg-spawn-import-deploy-issue/49582)

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**Author:** [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Replies:** 6\
**Last updated:** [14 August 2021 14:46 UTC](https://discourse.nodered.org/t/ffmpeg-spawn-import-deploy-issue/49582 "2021-08-14T14:46:10Z")

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@kevinGodell node-red-contrib-ffmpeg-spawn v0.1.0-beta.2 occurs on Rpi and macOS both running NR v2.0.5 If you import the flow below (a single configured ffmpeg-spawn node) you will see a red triangle show up and if yo…

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## [Serial units on bus](https://discourse.nodered.org/t/serial-units-on-bus/49715)

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**Author:** [@PiMo131](https://discourse.nodered.org/u/PiMo131)\
**Replies:** 4\
**Last updated:** [14 August 2021 15:23 UTC](https://discourse.nodered.org/t/serial-units-on-bus/49715 "2021-08-14T15:23:31Z")

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Hi, I am working with several (20) virtual com ports. Each port has a few (2 to 6) units which give sensor info every second. So from every unit I am getting info like: TMP,01,data TMP,02,data TMP,03,data HUM,01,da…

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