# General **URL:** https://discourse.nodered.org/c/general/7.md?page=486 [Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md) **Page:** 487 --- ## [Firebasedatabase.app URL in Firebase](https://discourse.nodered.org/t/firebasedatabase-app-url-in-firebase/51933)
**Author:** [@mamp](https://discourse.nodered.org/u/mamp)\ **Replies:** 0\ **Last updated:** [6 October 2021 16:26 UTC](https://discourse.nodered.org/t/firebasedatabase-app-url-in-firebase/51933 "2021-10-06T16:26:42Z")
Hi, I want to use the node of Firebase, but I have a problem. In Firebase, when I create a Realtime Database, it generates a URL of the database finished in "firebasedatabase.app/". And them, when I'm introducing it in … --- ## [Looking for suggestions on multiple copies of a flow](https://discourse.nodered.org/t/looking-for-suggestions-on-multiple-copies-of-a-flow/51924)
**Author:** [@tmichaeltx](https://discourse.nodered.org/u/tmichaeltx)\ **Replies:** 0\ **Last updated:** [6 October 2021 14:33 UTC](https://discourse.nodered.org/t/looking-for-suggestions-on-multiple-copies-of-a-flow/51924 "2021-10-06T14:33:57Z")
I am using NR for my home automation and have come up with a flow that I like a lot allows me to have synchronized control of a device (typically a switch or bulb) from many different interfaces (hubitat, alexa, google h… --- ## [Opinions requested: Determine active scene](https://discourse.nodered.org/t/opinions-requested-determine-active-scene/51872)
**Author:** [@jeroenst](https://discourse.nodered.org/u/jeroenst)\ **Replies:** 8\ **Last updated:** [6 October 2021 13:35 UTC](https://discourse.nodered.org/t/opinions-requested-determine-active-scene/51872 "2021-10-06T13:35:01Z")
At my home I make use of different scenes. This works perfect but sometimes mismatches with the real world: When I turn on a scene all lights and devices will set to the value according to the scene, which is ok. But wh… --- ## [Installing ssl certificate in nodered on home assistant](https://discourse.nodered.org/t/installing-ssl-certificate-in-nodered-on-home-assistant/51903)
**Author:** [@MJFlanigan](https://discourse.nodered.org/u/MJFlanigan)\ **Replies:** 2\ **Last updated:** [6 October 2021 12:34 UTC](https://discourse.nodered.org/t/installing-ssl-certificate-in-nodered-on-home-assistant/51903 "2021-10-06T12:34:14Z")
I need to get nodered to work with home assistant and get this error: SSL has been enabled using the ‘ssl’ option, \[20:53:10\] FATAL: this requires a SSL certificate file which is \[20:53:10\] FATAL: configured using the… --- ## [6 hex numbers to 3 \* 2 hex split](https://discourse.nodered.org/t/6-hex-numbers-to-3-2-hex-split/51861)
**Author:** [@Simon3021](https://discourse.nodered.org/u/Simon3021)\ **Replies:** 13\ **Last updated:** [6 October 2021 10:04 UTC](https://discourse.nodered.org/t/6-hex-numbers-to-3-2-hex-split/51861 "2021-10-06T10:04:57Z")
I have ABCDEF - 6 hex numbers coming to node red however need them separate into 3 lots of 2 hex numbers left to right AB first CD second and etc. using function module in node red. --- ## [Weird things happening. CPU load spikes](https://discourse.nodered.org/t/weird-things-happening-cpu-load-spikes/51429)
**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\ **Replies:** 27\ **Last updated:** [6 October 2021 09:14 UTC](https://discourse.nodered.org/t/weird-things-happening-cpu-load-spikes/51429 "2021-10-06T09:14:09Z")
There seems to be something happening but I can't quite find it. Machine details: NR 1.2.6 O/S Stretch. RPZ (W) Usually it runs about 30-40% load. But now and then it maxs out to .... 90-100%. Sustained. … --- ## [How to get/access global.context and modify it in a \`change\` node](https://discourse.nodered.org/t/how-to-get-access-global-context-and-modify-it-in-a-change-node/51896)
**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\ **Replies:** 2\ **Last updated:** [6 October 2021 08:57 UTC](https://discourse.nodered.org/t/how-to-get-access-global-context-and-modify-it-in-a-change-node/51896 "2021-10-06T08:57:49Z")
I know I have seen it and I use it. But I don't know how to search for it in the flows I have. Problem/scenario: global.DELAY = 3000 In the change node I want to set a message property to global.DELAY / 10. I rememb… --- ## [MQTT publish on The Things Stack](https://discourse.nodered.org/t/mqtt-publish-on-the-things-stack/51882)
**Author:** [@Miriana](https://discourse.nodered.org/u/Miriana)\ **Replies:** 4\ **Last updated:** [6 October 2021 08:30 UTC](https://discourse.nodered.org/t/mqtt-publish-on-the-things-stack/51882 "2021-10-06T08:30:55Z")
Hi everyone, I am trying to publish a message with MQTT on The Things Stack. I followed the instructions here Send Messages | The Things Stack for LoRaWAN and I used the code found at the following link (TheThingsNetwor… --- ## [Function Node Code Completion for Module (Monaco Editor)](https://discourse.nodered.org/t/function-node-code-completion-for-module-monaco-editor/49779)
**Author:** [@harmonic7](https://discourse.nodered.org/u/harmonic7)\ **Replies:** 11\ **Last updated:** [6 October 2021 08:00 UTC](https://discourse.nodered.org/t/function-node-code-completion-for-module-monaco-editor/49779 "2021-10-06T08:00:41Z")
Hi everyone! I've installed v2.0.5 and configured the Monaco Editor. Firstly, thanks so much to the development team, it's fantastic to see these improvements. Now, using the 'setup tab' and allowing the use of install… --- ## [Post / request information from web API](https://discourse.nodered.org/t/post-request-information-from-web-api/51894)
**Author:** [@Sirhc](https://discourse.nodered.org/u/Sirhc)\ **Replies:** 3\ **Last updated:** [6 October 2021 03:31 UTC](https://discourse.nodered.org/t/post-request-information-from-web-api/51894 "2021-10-06T03:31:42Z")
Hello I have an API offered my my pool manufacturer that I am able to use to communicate with my pool controller. The API use is shown below. Do I just use an inject node, then set the payload to pool\_api\_code: ABCDEF… --- ## [New question with \`smooth\` node](https://discourse.nodered.org/t/new-question-with-smooth-node/51901)
**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\ **Replies:** 3\ **Last updated:** [6 October 2021 02:25 UTC](https://discourse.nodered.org/t/new-question-with-smooth-node/51901 "2021-10-06T02:25:21Z")
Ok, I'm still trying. The other day I asked about how to do something and I was pointed towards the smooth node. I redacted a question I posted on how to reset it. (Didn't read all the docs) But that raised a proble… --- ## [String being overwritten in netvar node](https://discourse.nodered.org/t/string-being-overwritten-in-netvar-node/18090)
**Author:** [@KMBN](https://discourse.nodered.org/u/KMBN)\ **Replies:** 18\ **Last updated:** [5 October 2021 20:42 UTC](https://discourse.nodered.org/t/string-being-overwritten-in-netvar-node/18090 "2021-10-05T20:42:33Z")
I am using netvar-receiver from the node-red-contrib-netvar library (https://cdn.jsdelivr.net/npm/node-red-contrib-netvar@0.0.3/netvar-receiver.js), and one of the variables received (UDP on port 1202) is in a string for… --- ## [Flows.nodered Rendering Differently than npmjs or GH](https://discourse.nodered.org/t/flows-nodered-rendering-differently-than-npmjs-or-gh/51839)
**Author:** [@crxporter](https://discourse.nodered.org/u/crxporter)\ **Replies:** 6\ **Last updated:** [5 October 2021 15:43 UTC](https://discourse.nodered.org/t/flows-nodered-rendering-differently-than-npmjs-or-gh/51839 "2021-10-05T15:43:13Z")
We've recently pushed an update to our readme file and the markdown for readme.md is being processed differently on flows.nodered.org compared to npmjs or github. On flows.nodered it is processed as a full-page 2 column … --- ## [Dropdown and serial input](https://discourse.nodered.org/t/dropdown-and-serial-input/51886)
**Author:** [@abdosml](https://discourse.nodered.org/u/abdosml)\ **Replies:** 2\ **Last updated:** [5 October 2021 15:42 UTC](https://discourse.nodered.org/t/dropdown-and-serial-input/51886 "2021-10-05T15:42:32Z")
i had this type of data: \*\*\*\*\*\*\*\* 05/10/2021, 15:53:33node: 65267da.3d97d84msg.payload : string\[22\] string\[22\] CE3PRO~1.GCO 7003983 05/10/2021, 15:53:34node: 65267da.3d97d84msg.payload : string\[22\] string\[22\] CE3PR… --- ## [Playing mp3 sound from node red to other dashboards](https://discourse.nodered.org/t/playing-mp3-sound-from-node-red-to-other-dashboards/51816)
**Author:** [@Sirhc](https://discourse.nodered.org/u/Sirhc)\ **Replies:** 6\ **Last updated:** [5 October 2021 12:48 UTC](https://discourse.nodered.org/t/playing-mp3-sound-from-node-red-to-other-dashboards/51816 "2021-10-05T12:48:09Z")
Hello I have node red running on an Ubuntu server. I also have a door bell which communicates to node red via MQTT (Ubuntu) and a remote dashboard on an iPad (running safari browser). When the button is pressed, node-… --- ## [Decode base64 to value](https://discourse.nodered.org/t/decode-base64-to-value/51829)
**Author:** [@ketpa](https://discourse.nodered.org/u/ketpa)\ **Replies:** 5\ **Last updated:** [5 October 2021 12:05 UTC](https://discourse.nodered.org/t/decode-base64-to-value/51829 "2021-10-05T12:05:21Z")
I have payload encoded in base64 payload = jwSPBI8EkASQBJAEkASOBI4EjgSOBI8EjwSPBJEEkQSSBJIEkwSTBJQElASVBJUElgSWBJcElwSYBJkE or payload = PAAAelFhAAAABwEBMgAAAAAAAQBMBOIEAAAAAAAAPADWK+sVgACCQgAADQCAAIJCHJNHYQAAAAAAAAAAA… --- ## [HTTP request node - ERR\_TLS\_CERT\_ALTNAME\_INVALID](https://discourse.nodered.org/t/http-request-node-err-tls-cert-altname-invalid/51841)
**Author:** [@DomH](https://discourse.nodered.org/u/DomH)\ **Replies:** 4\ **Last updated:** [5 October 2021 09:20 UTC](https://discourse.nodered.org/t/http-request-node-err-tls-cert-altname-invalid/51841 "2021-10-05T09:20:14Z")
Hi There I'm using nodered on a raspberry pi and recently one of the servers I do a HTTP GET from comes back with error: ERR\_TLS\_CERT\_ALTNAME\_INVALID I can get a normal result when connecting to this with a webrowser a… --- ## [Macros.... multiple nodes.... as opposed to SUBFLOWS](https://discourse.nodered.org/t/macros-multiple-nodes-as-opposed-to-subflows/51858)
**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\ **Replies:** 1\ **Last updated:** [5 October 2021 08:57 UTC](https://discourse.nodered.org/t/macros-multiple-nodes-as-opposed-to-subflows/51858 "2021-10-05T08:57:59Z")
Oh, I am so happy I started to use SUBFLOWs rather than discreet nodes. The pain that I was having before them was just unbelievable. (Well, maybe not. but...) The latest thing to bite me is like a Macro. Maybe GROU… --- ## [Uibuilder - load data after a webpage has loaded](https://discourse.nodered.org/t/uibuilder-load-data-after-a-webpage-has-loaded/51804)
**Author:** [@GeeBee2021](https://discourse.nodered.org/u/GeeBee2021)\ **Replies:** 8\ **Last updated:** [5 October 2021 08:51 UTC](https://discourse.nodered.org/t/uibuilder-load-data-after-a-webpage-has-loaded/51804 "2021-10-05T08:51:15Z")
I am probably aiming higher than I can reach, but as they say, go big, or go home. I am writing a Burglar Alarm system, yes another one, but of course mine will be better than all the others :-). I am fine doing the no… --- ## [User Variable Timer](https://discourse.nodered.org/t/user-variable-timer/51806)
**Author:** [@sudomac](https://discourse.nodered.org/u/sudomac)\ **Replies:** 7\ **Last updated:** [5 October 2021 08:12 UTC](https://discourse.nodered.org/t/user-variable-timer/51806 "2021-10-05T08:12:19Z")
I am looking for some help with a user variable timer. (Application): I am building a drink maker using dosing pumps. The time the pump need to run depends on the drink that is being made and the calibration value of the… --- ## [Audio file playback and stopping playback](https://discourse.nodered.org/t/audio-file-playback-and-stopping-playback/8692)
**Author:** [@sanderl](https://discourse.nodered.org/u/sanderl)\ **Replies:** 16\ **Last updated:** [7 March 2019 11:27 UTC](https://discourse.nodered.org/t/audio-file-playback-and-stopping-playback/8692 "2019-03-07T11:27:30Z")
Hello all, I am very new to Node-red. So I am hoping I am just missing something obvious. I have a Raspberry Pi3 running Node-red 0.19.6, node.js 10.15.1 I am trying to play a local sound file (.Wav) on the mini-jack … --- ## [If statement within a for loop](https://discourse.nodered.org/t/if-statement-within-a-for-loop/51859)
**Author:** [@fogmajor](https://discourse.nodered.org/u/fogmajor)\ **Replies:** 10\ **Last updated:** [5 October 2021 00:20 UTC](https://discourse.nodered.org/t/if-statement-within-a-for-loop/51859 "2021-10-05T00:20:43Z")
Good Evening I wondered if someone could assist me please I have a node-red function that extracts 5 values from a text file as listed below var lounge = some value var kitchen = some value var hallway = some value … --- ## [TypeError: Cannot read property 'push' of undefined](https://discourse.nodered.org/t/typeerror-cannot-read-property-push-of-undefined/51849)
**Author:** [@abdosml](https://discourse.nodered.org/u/abdosml)\ **Replies:** 6\ **Last updated:** [5 October 2021 00:10 UTC](https://discourse.nodered.org/t/typeerror-cannot-read-property-push-of-undefined/51849 "2021-10-05T00:10:50Z")
i had this error msg "TypeError: Cannot read property 'push' of undefined" i use a serial in to use it with a dropdown but nothings works good iwas blocked with this erorr exemple of datat: {"payload":"CE3PRO~4.GCO… --- ## [Would such a node exist? Max/Ave/Min](https://discourse.nodered.org/t/would-such-a-node-exist-max-ave-min/51840)
**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\ **Replies:** 10\ **Last updated:** [4 October 2021 21:06 UTC](https://discourse.nodered.org/t/would-such-a-node-exist-max-ave-min/51840 "2021-10-04T21:06:39Z")
It wouldn't be rocket science, but I don't want to reinvent the wheel if I can avoid it. You are receiving a series of messages (values). The node "splits" the values to 3 outputs: Maximum value received. Average val… --- ## [Reading GPIOs issue](https://discourse.nodered.org/t/reading-gpios-issue/51759)
**Author:** [@ebolisa](https://discourse.nodered.org/u/ebolisa)\ **Replies:** 15\ **Last updated:** [4 October 2021 21:54 UTC](https://discourse.nodered.org/t/reading-gpios-issue/51759 "2021-10-04T21:54:53Z")
Hello again, Still crawling the learning curve so pls, bear with me. I'm reading 5 GPIOs lines and displaying them as LEDs. However, only one of them responds to the changes. I run a python loop to physically check t… --- ## [Detecting global/flow object change](https://discourse.nodered.org/t/detecting-global-flow-object-change/51499)
**Author:** [@pautorras](https://discourse.nodered.org/u/pautorras)\ **Replies:** 11\ **Last updated:** [4 October 2021 20:47 UTC](https://discourse.nodered.org/t/detecting-global-flow-object-change/51499 "2021-10-04T20:47:27Z")
Hi all folks! I'm trying to detect a change of value in self created object. This object contains presence info from the diferent domo devices in home (Fibaro FGMS-001) via zwave. I set the PRES object global every 1s… --- ## [Trying to gather global vars into a single object once daily](https://discourse.nodered.org/t/trying-to-gather-global-vars-into-a-single-object-once-daily/51855)
**Author:** [@HeneryH](https://discourse.nodered.org/u/HeneryH)\ **Replies:** 1\ **Last updated:** [4 October 2021 19:04 UTC](https://discourse.nodered.org/t/trying-to-gather-global-vars-into-a-single-object-once-daily/51855 "2021-10-04T19:04:13Z")
Hi folks. I have a flow that is monitoring a series of IoT things and sending SMS alerts just fine. I am trying to do something that seems simple enough. Create a daily SMS that gathers designated saved global variabl… --- ## [Break flow after http request error](https://discourse.nodered.org/t/break-flow-after-http-request-error/51833)
**Author:** [@loukaspe](https://discourse.nodered.org/u/loukaspe)\ **Replies:** 6\ **Last updated:** [4 October 2021 16:03 UTC](https://discourse.nodered.org/t/break-flow-after-http-request-error/51833 "2021-10-04T16:03:32Z")
I have a simple flow (code and sceenshot provided): an HTTP Input an HTTP request (for which I want to handle errors) an HTTP Response (status 200) an Catch node along with an HTTP Response (status 500). What I've not… --- ## [I2C node explanation for mcp4725](https://discourse.nodered.org/t/i2c-node-explanation-for-mcp4725/51646)
**Author:** [@mkh12345](https://discourse.nodered.org/u/mkh12345)\ **Replies:** 8\ **Last updated:** [4 October 2021 15:26 UTC](https://discourse.nodered.org/t/i2c-node-explanation-for-mcp4725/51646 "2021-10-04T15:26:47Z")
Good day I am a new to node red, and programming all together. I have not done programming in well over 12 years. The last programming I have done was PIC and arduino. I have attempted to utilise the node-red-contrib-i2… --- ## [Feature request: start flow despite unregistered nodes if they are disabled](https://discourse.nodered.org/t/feature-request-start-flow-despite-unregistered-nodes-if-they-are-disabled/51831)
**Author:** [@heleon19](https://discourse.nodered.org/u/heleon19)\ **Replies:** 0\ **Last updated:** [4 October 2021 11:44 UTC](https://discourse.nodered.org/t/feature-request-start-flow-despite-unregistered-nodes-if-they-are-disabled/51831 "2021-10-04T11:44:50Z")
If a node type is not present in a flow, the entire flow will not start. This restriction is quite reasonable, but sometimes tedious when switching between different projects. My suggestion: If a node is deactivated, o… [Previous page](https://discourse.nodered.org/c/general/7.md?page=485) [Next page](https://discourse.nodered.org/c/general/7.md?page=487)