# General **URL:** https://discourse.nodered.org/c/general/7.md?page=96 [Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md) **Page:** 97 --- ## [Submit html form by selecting radio button without using a submit button](https://discourse.nodered.org/t/submit-html-form-by-selecting-radio-button-without-using-a-submit-button/89546)
**Author:** [@smanjunath211](https://discourse.nodered.org/u/smanjunath211)\ **Replies:** 1\ **Last updated:** [16 July 2024 17:23 UTC](https://discourse.nodered.org/t/submit-html-form-by-selecting-radio-button-without-using-a-submit-button/89546 "2024-07-16T17:23:15Z")
I have a flow which gives me 6 options in the form of radio buttons to chose from and sends selected payload upon clicking the SUBMIT button. what i need is the submit to happen on just selecting an option among the rad… --- ## [Filter data for dashboard](https://discourse.nodered.org/t/filter-data-for-dashboard/89432)
**Author:** [@Tomtom](https://discourse.nodered.org/u/Tomtom)\ **Replies:** 4\ **Last updated:** [16 July 2024 10:57 UTC](https://discourse.nodered.org/t/filter-data-for-dashboard/89432 "2024-07-16T10:57:41Z")
Hi everyone, I am having a node that generates for each day of the year some power consumption data: \["01-06-2024",9,0,"test"\] \["02-06-2024",10,7,"test"\] \["03-06-2024",12,0,"test"\] \["04-06-2024",5,1,"test"\] \["05-0… --- ## [Modbus rtu sequencial multiple reading slaves](https://discourse.nodered.org/t/modbus-rtu-sequencial-multiple-reading-slaves/89539)
**Author:** [@VEENS973](https://discourse.nodered.org/u/VEENS973)\ **Replies:** 1\ **Last updated:** [16 July 2024 10:08 UTC](https://discourse.nodered.org/t/modbus-rtu-sequencial-multiple-reading-slaves/89539 "2024-07-16T10:08:45Z")
I need to read Modbus rtu sequential reading slaves (10). --- ## [Help with NR configuration](https://discourse.nodered.org/t/help-with-nr-configuration/89536)
**Author:** [@Ali-Austin](https://discourse.nodered.org/u/Ali-Austin)\ **Replies:** 3\ **Last updated:** [16 July 2024 10:04 UTC](https://discourse.nodered.org/t/help-with-nr-configuration/89536 "2024-07-16T10:04:24Z")
Hello All Sorry to ask what I hope with be a simple question but is been driving me nuts. I have been using NR for a while now and have figured most things out. but this one it stumping me. I am using a call service no… --- ## [How to tell if you have come back in late at night question](https://discourse.nodered.org/t/how-to-tell-if-you-have-come-back-in-late-at-night-question/89409)
**Author:** [@triphil](https://discourse.nodered.org/u/triphil)\ **Replies:** 13\ **Last updated:** [16 July 2024 08:46 UTC](https://discourse.nodered.org/t/how-to-tell-if-you-have-come-back-in-late-at-night-question/89409 "2024-07-16T08:46:27Z")
Hi have sucessfully managed to use ESPrence to detect the bluetooth signal from my watch and it can tell how far away it is from the sensor, this is great for say having the light on in the bathroom while you are in the … --- ## [Request HTTP digest](https://discourse.nodered.org/t/request-http-digest/89535)
**Author:** [@LinkView\_Maze](https://discourse.nodered.org/u/LinkView_Maze)\ **Replies:** 0\ **Last updated:** [16 July 2024 06:55 UTC](https://discourse.nodered.org/t/request-http-digest/89535 "2024-07-16T06:55:18Z")
Hello, I have a problem with node HTTP REQUEST. I have an API with a Dahua camera which allows me to know the number of people in an area. http://"ipcam"/cgi-bin/videoStatServer.cgi?action=attach&channel=1&heartbeat=2 … --- ## [Function editor, error reporting has strange behavour](https://discourse.nodered.org/t/function-editor-error-reporting-has-strange-behavour/89529)
**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\ **Replies:** 2\ **Last updated:** [15 July 2024 22:56 UTC](https://discourse.nodered.org/t/function-editor-error-reporting-has-strange-behavour/89529 "2024-07-15T22:56:42Z")
Hi, I worked a lot with NR @version 2, I do remember how it helped me correcting syntax, remember missing pharentesis and so on. Now I?m using 4, I have an error somewhere and I can't get rid of it. I can see NR reportin… --- ## [Help with Ui-template node (Dashboard 2.0)](https://discourse.nodered.org/t/help-with-ui-template-node-dashboard-2-0/89532)
**Author:** [@Terham](https://discourse.nodered.org/u/Terham)\ **Replies:** 2\ **Last updated:** [15 July 2024 22:47 UTC](https://discourse.nodered.org/t/help-with-ui-template-node-dashboard-2-0/89532 "2024-07-15T22:47:47Z")
Hi I´m pretty new to Node-Red and coding in general and i was wondering if someone could point me in the right direction. I´m trying to get the "v-badge" to change colour depending on the value of msg.payload but I´m ki… --- ## [Help with flow selection order gives wrong item](https://discourse.nodered.org/t/help-with-flow-selection-order-gives-wrong-item/89527)
**Author:** [@kroonp](https://discourse.nodered.org/u/kroonp)\ **Replies:** 1\ **Last updated:** [15 July 2024 19:17 UTC](https://discourse.nodered.org/t/help-with-flow-selection-order-gives-wrong-item/89527 "2024-07-15T19:17:38Z")
Please advise what I am doing wrong? In the accompanying flow, the intention is that a scene is started depending on the lux value. If the lux value is between 30-300, wk\_schemer should be selected. However, wk\_avond is… --- ## [Adapting my workflow to use the Projects feature](https://discourse.nodered.org/t/adapting-my-workflow-to-use-the-projects-feature/14833)
**Author:** [@edorgeville](https://discourse.nodered.org/u/edorgeville)\ **Replies:** 2\ **Last updated:** [15 July 2024 15:42 UTC](https://discourse.nodered.org/t/adapting-my-workflow-to-use-the-projects-feature/14833 "2024-07-15T15:42:03Z")
Hi everyone, I've been trying out working with projects inside node-red, but I've been hitting the following roadblock ever time I tried. Is it possible to use the Projects / history feature using the following workflo… --- ## [ACCESS DENIED when using serialport in node-red](https://discourse.nodered.org/t/access-denied-when-using-serialport-in-node-red/89496)
**Author:** [@xty19](https://discourse.nodered.org/u/xty19)\ **Replies:** 2\ **Last updated:** [15 July 2024 13:37 UTC](https://discourse.nodered.org/t/access-denied-when-using-serialport-in-node-red/89496 "2024-07-15T13:37:10Z")
SerialPort Version 12.0.0 Node Version V18.16.1 (MACOS) V20.15.0(WIN10,WIN11 ) Electron Version No response Platform MACOS12.1 WIN11 WIN10 Architecture x64 Hardware or chipset of serialport FT232R USB UART I … --- ## [Unintentional exiting of a tab](https://discourse.nodered.org/t/unintentional-exiting-of-a-tab/89428)
**Author:** [@gNeandr](https://discourse.nodered.org/u/gNeandr)\ **Replies:** 23\ **Last updated:** [14 July 2024 23:59 UTC](https://discourse.nodered.org/t/unintentional-exiting-of-a-tab/89428 "2024-07-14T23:59:40Z")
How can unintentional exiting of a tab be prevented? If data has been changed while working on a tab, the user should be asked whether they want to leave the page. Which node elements can be used to achieve this? --- ## [\[error\] Error: Error loading context store: Error: EACCES: permission denied, mkdir '/data'](https://discourse.nodered.org/t/error-error-error-loading-context-store-error-eacces-permission-denied-mkdir-data/89461)
**Author:** [@hermiot](https://discourse.nodered.org/u/hermiot)\ **Replies:** 7\ **Last updated:** [15 July 2024 10:28 UTC](https://discourse.nodered.org/t/error-error-error-loading-context-store-error-eacces-permission-denied-mkdir-data/89461 "2024-07-15T10:28:03Z")
Hi, I'm running Node-RED on Debian and needed to change the config.js to contextStorage: { default: { module:"localfilesystem", config: { dir:"/data", base:"c… --- ## [Modify pic via canvas](https://discourse.nodered.org/t/modify-pic-via-canvas/89501)
**Author:** [@HenryTrang](https://discourse.nodered.org/u/HenryTrang)\ **Replies:** 0\ **Last updated:** [15 July 2024 06:55 UTC](https://discourse.nodered.org/t/modify-pic-via-canvas/89501 "2024-07-15T06:55:55Z")
hello all i have been trying for day to mark a circle on a pic. initially i get a base64 string, i draw a circle on canvas then i get the update pic. and i wonder how can a do it in node-red. --- ## [Send email using Gmail app password](https://discourse.nodered.org/t/send-email-using-gmail-app-password/89500)
**Author:** [@SPChong](https://discourse.nodered.org/u/SPChong)\ **Replies:** 2\ **Last updated:** [15 July 2024 06:53 UTC](https://discourse.nodered.org/t/send-email-using-gmail-app-password/89500 "2024-07-15T06:53:10Z")
In the past (maybe around 2022) we can set TFA in Google Account security page, and generate "app password" to use in "email node". Now, this app password can no longer be found in Google Account. Is there still anyway t… --- ## [Node Red Stalls at Loading Nodes 46/90](https://discourse.nodered.org/t/node-red-stalls-at-loading-nodes-46-90/89471)
**Author:** [@Busta999](https://discourse.nodered.org/u/Busta999)\ **Replies:** 2\ **Last updated:** [14 July 2024 12:27 UTC](https://discourse.nodered.org/t/node-red-stalls-at-loading-nodes-46-90/89471 "2024-07-14T12:27:27Z")
Node Red is running and flows are running but I can’t access anything or edit anything. I had just upgraded to 18.0.4 and Node Red was crashing about every 5-6 mins. Thinking it was a node playing up I disabled all th… --- ## [Convert yyyymmdd format within a string to epoc](https://discourse.nodered.org/t/convert-yyyymmdd-format-within-a-string-to-epoc/89478)
**Author:** [@Danman](https://discourse.nodered.org/u/Danman)\ **Replies:** 3\ **Last updated:** [14 July 2024 11:59 UTC](https://discourse.nodered.org/t/convert-yyyymmdd-format-within-a-string-to-epoc/89478 "2024-07-14T11:59:18Z")
Hi all wondering if anyone could provide a method (function or change node) of taking a string like this from a payload "SG3.0RS,ON,2024-7-12 14:36:10,0.0,0.0,11.8,38.5,46,41.4,1291,241.6,1287,Run,415,38.5,Start,2024-7-… --- ## [The flows disappear](https://discourse.nodered.org/t/the-flows-disappear/89474)
**Author:** [@XavierTGN](https://discourse.nodered.org/u/XavierTGN)\ **Replies:** 12\ **Last updated:** [14 July 2024 11:45 UTC](https://discourse.nodered.org/t/the-flows-disappear/89474 "2024-07-14T11:45:57Z")
Hello. I have a problem with node-red that I don't know what to do anymore. Every so often, varying between two weeks and 2 or 3 days, the system deletes all the data in the flows.json file and the flows disappear. Ve… --- ## [Node Red 4.0 Inject Node](https://discourse.nodered.org/t/node-red-4-0-inject-node/89454)
**Author:** [@GC1](https://discourse.nodered.org/u/GC1)\ **Replies:** 5\ **Last updated:** [14 July 2024 11:04 UTC](https://discourse.nodered.org/t/node-red-4-0-inject-node/89454 "2024-07-14T11:04:38Z")
I have several flows I use the Inject Node to trigger every second or every five seconds. Node Red 4.0 Inject Node doesn't allow the use of seconds. Why did they take this option away? So basically 4.0 is useless to m… --- ## [Error: connect ENOENT /var/run/dbus/system\_bus\_socket](https://discourse.nodered.org/t/error-connect-enoent-var-run-dbus-system-bus-socket/89452)
**Author:** [@hacesoft](https://discourse.nodered.org/u/hacesoft)\ **Replies:** 6\ **Last updated:** [14 July 2024 09:05 UTC](https://discourse.nodered.org/t/error-connect-enoent-var-run-dbus-system-bus-socket/89452 "2024-07-14T09:05:23Z")
Hello, I have node-red installed on a synology NAS, and it shows me this error in the log: Error connecting to dbus: Error: connect ENOENT /var/run/dbus/system\_bus\_socket Node-red works fine for me, accesses modbus and… --- ## [How to split decimals on a value](https://discourse.nodered.org/t/how-to-split-decimals-on-a-value/89468)
**Author:** [@salevilainponey](https://discourse.nodered.org/u/salevilainponey)\ **Replies:** 3\ **Last updated:** [14 July 2024 08:28 UTC](https://discourse.nodered.org/t/how-to-split-decimals-on-a-value/89468 "2024-07-14T08:28:41Z")
Hello, I try to publish on a screen my electricity production but with the sensor that i use, i have on the screen a too big number with 2 decimals, for example 1835,48 W. I would like to split the decimals to show on t… --- ## [Migrating to Pi 5, trouble with pigpiod](https://discourse.nodered.org/t/migrating-to-pi-5-trouble-with-pigpiod/88762)
**Author:** [@dennishvo](https://discourse.nodered.org/u/dennishvo)\ **Replies:** 9\ **Last updated:** [14 July 2024 07:07 UTC](https://discourse.nodered.org/t/migrating-to-pi-5-trouble-with-pigpiod/88762 "2024-07-14T07:07:24Z")
It looks like pigpiod is no longer supported on the Raspberry Pi 5. I currently use node-red-node-pi-gpio to do PWM, which relies on pigpiod. What is the recommended alternative? --- ## [Node Red on raspberry PI doesn't send UDP packets, but DOES receive them](https://discourse.nodered.org/t/node-red-on-raspberry-pi-doesnt-send-udp-packets-but-does-receive-them/89456)
**Author:** [@rt54321](https://discourse.nodered.org/u/rt54321)\ **Replies:** 1\ **Last updated:** [13 July 2024 05:59 UTC](https://discourse.nodered.org/t/node-red-on-raspberry-pi-doesnt-send-udp-packets-but-does-receive-them/89456 "2024-07-13T05:59:55Z")
Running UDP communication with three devices on my WiFi network: raspberry PI (using the "UDP send" and "UDP receive" nodes) ESP32 My desktop computer running packet sender and Wireshark When I send a UDP packet from … --- ## [Importing two payloads as variables and use them for calculation](https://discourse.nodered.org/t/importing-two-payloads-as-variables-and-use-them-for-calculation/89455)
**Author:** [@Lenaschitz](https://discourse.nodered.org/u/Lenaschitz)\ **Replies:** 2\ **Last updated:** [13 July 2024 04:45 UTC](https://discourse.nodered.org/t/importing-two-payloads-as-variables-and-use-them-for-calculation/89455 "2024-07-13T04:45:19Z")
hi guys, I wanna import two different payloads (with two different topics) to a function node and use them to calculate someting. At the end the result should be send out as a payload again. I get the two values from a… --- ## [Node-red starts but does not respond locally in 1880 port](https://discourse.nodered.org/t/node-red-starts-but-does-not-respond-locally-in-1880-port/89447)
**Author:** [@amqf](https://discourse.nodered.org/u/amqf)\ **Replies:** 3\ **Last updated:** [12 July 2024 20:57 UTC](https://discourse.nodered.org/t/node-red-starts-but-does-not-respond-locally-in-1880-port/89447 "2024-07-12T20:57:19Z")
I cloned the repository git@github.com /node-red.git, executed the commands npm install, npm build, and npm start using NodeJS version 20. $ npm run start \> node-red@4.0.2 start \> node packages/node\_modules/node-red/r… --- ## [UI for timekeeper Android style](https://discourse.nodered.org/t/ui-for-timekeeper-android-style/89214)
**Author:** [@robertobuti](https://discourse.nodered.org/u/robertobuti)\ **Replies:** 9\ **Last updated:** [12 July 2024 17:18 UTC](https://discourse.nodered.org/t/ui-for-timekeeper-android-style/89214 "2024-07-12T17:18:03Z")
Hello, i have done this timekeeper starting from github code, the strange thing is some time is working and sometime not, the field are displayed but the editing not. not every time, seem not realted to the browser, but… --- ## [Node-Red Sparkplug B DDATA Messages Failing in Ignition - Troubleshooting Help Needed](https://discourse.nodered.org/t/node-red-sparkplug-b-ddata-messages-failing-in-ignition-troubleshooting-help-needed/89433)
**Author:** [@thahamp](https://discourse.nodered.org/u/thahamp)\ **Replies:** 1\ **Last updated:** [12 July 2024 14:59 UTC](https://discourse.nodered.org/t/node-red-sparkplug-b-ddata-messages-failing-in-ignition-troubleshooting-help-needed/89433 "2024-07-12T14:59:57Z")
I'm experiencing an issue with Sparkplug B implementation in Node-RED. My flow successfully publishes NBIRTH and DBIRTH messages, but Ignition fails to handle the DDATA messages. The error log shows: 'Failed to handle th… --- ## [Clearing Dashboard textbox prior to update](https://discourse.nodered.org/t/clearing-dashboard-textbox-prior-to-update/89443)
**Author:** [@fogmajor](https://discourse.nodered.org/u/fogmajor)\ **Replies:** 1\ **Last updated:** [12 July 2024 13:42 UTC](https://discourse.nodered.org/t/clearing-dashboard-textbox-prior-to-update/89443 "2024-07-12T13:42:48Z")
I have a dashboard textbox that displays a database record count which is working fine, Lets say its displaying a value of 10 and the sql query updates and returns no records I want to either set the textbox to 0 or leav… --- ## [The best (and more reliable) way to notify NR from DOS .bat script](https://discourse.nodered.org/t/the-best-and-more-reliable-way-to-notify-nr-from-dos-bat-script/89402)
**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\ **Replies:** 15\ **Last updated:** [12 July 2024 11:14 UTC](https://discourse.nodered.org/t/the-best-and-more-reliable-way-to-notify-nr-from-dos-bat-script/89402 "2024-07-12T11:14:48Z")
Hi, I've a program that may alert me executing a .bat, I've some ideas how to advice NR about that, for example I can send something by telnet/SSH, or create a file which NR can advice and (then) delete. I would like to… --- ## [Using subflow environment varibles directly within a http request URL?](https://discourse.nodered.org/t/using-subflow-environment-varibles-directly-within-a-http-request-url/89440)
**Author:** [@RK\_aus\_S](https://discourse.nodered.org/u/RK_aus_S)\ **Replies:** 1\ **Last updated:** [12 July 2024 08:41 UTC](https://discourse.nodered.org/t/using-subflow-environment-varibles-directly-within-a-http-request-url/89440 "2024-07-12T08:41:22Z")
Hi I've been searching for a while, but stay uncertain, all my try's failed so far: Is there any chance or possibility in a subflow to use an environment variable (defined in the subflow properties button) directly wit… [Previous page](https://discourse.nodered.org/c/general/7.md?page=95) [Next page](https://discourse.nodered.org/c/general/7.md?page=97)