# Latest **URL:** https://discourse.nodered.org/latest.md?page=251 [Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md) **Page:** 252 --- ## [Accessing GPIO on PI 4](https://discourse.nodered.org/t/accessing-gpio-on-pi-4/83907)
**Author:** [@DonkeyKong](https://discourse.nodered.org/u/DonkeyKong)\ **Replies:** 9\ **Last updated:** [8 January 2024 10:11 UTC](https://discourse.nodered.org/t/accessing-gpio-on-pi-4/83907 "2024-01-08T10:11:24Z")
Hi, I am trying to get data from a MPU6050 motion sensor, which is connected to my Pi 4 via the GPIO-Pins (I'm pretty sure, that it is wired correctly as reading the information with a python script is possible). Howeve… --- ## [Days between two dates](https://discourse.nodered.org/t/days-between-two-dates/84377)
**Author:** [@Sirhc](https://discourse.nodered.org/u/Sirhc)\ **Replies:** 5\ **Last updated:** [8 January 2024 09:08 UTC](https://discourse.nodered.org/t/days-between-two-dates/84377 "2024-01-08T09:08:31Z")
Hello I am trying to calculate the days between two dates. I have the following: let date1 = new Date(); Then 2 days later, I set this: let date2 = new Date(); I have tried: let number\_of\_days = date2 - date1; bu… --- ## [Logitech Harmony Extra - Node](https://discourse.nodered.org/t/logitech-harmony-extra-node/84302)
**Author:** [@Wurmi](https://discourse.nodered.org/u/Wurmi)\ **Replies:** 5\ **Last updated:** [8 January 2024 08:07 UTC](https://discourse.nodered.org/t/logitech-harmony-extra-node/84302 "2024-01-08T08:07:10Z")
When I am trying to use the following node: I get the following error msg: 4 Jan 21:28:41 - \[red\] Uncaught Exception: 4 Jan 21:28:41 - \[error\] TypeError: Cannot read properties of undefined (reading 'getActivities') … --- ## [Streaming audio from mic to Node-RED flow in real-time](https://discourse.nodered.org/t/streaming-audio-from-mic-to-node-red-flow-in-real-time/84055)
**Author:** [@Jdo300](https://discourse.nodered.org/u/Jdo300)\ **Replies:** 2\ **Last updated:** [8 January 2024 07:11 UTC](https://discourse.nodered.org/t/streaming-audio-from-mic-to-node-red-flow-in-real-time/84055 "2024-01-08T07:11:56Z")
Hello. I'm working on creating a flow in Node-RED that can read samples of voice input from a live audio input stream (a microphone), and create a visualization from the audio stream as the user is speaking. So far, I've… --- ## [How to install noded nodes offline in Dockerce environment (MySQL, S7, node red contrib influxdb, OPCUA)](https://discourse.nodered.org/t/how-to-install-noded-nodes-offline-in-dockerce-environment-mysql-s7-node-red-contrib-influxdb-opcua/84379)
**Author:** [@dangliufeng](https://discourse.nodered.org/u/dangliufeng)\ **Replies:** 0\ **Last updated:** [8 January 2024 05:25 UTC](https://discourse.nodered.org/t/how-to-install-noded-nodes-offline-in-dockerce-environment-mysql-s7-node-red-contrib-influxdb-opcua/84379 "2024-01-08T05:25:44Z")
How to install noded nodes offline in Dockerce environment (MySQL, S7, node red contrib influxdb, OPCUA) --- ## [Help with text node alignment](https://discourse.nodered.org/t/help-with-text-node-alignment/84329)
**Author:** [@Sirhc](https://discourse.nodered.org/u/Sirhc)\ **Replies:** 11\ **Last updated:** [8 January 2024 04:22 UTC](https://discourse.nodered.org/t/help-with-text-node-alignment/84329 "2024-01-08T04:22:38Z")
Hello I have the following flow: Basically the function populates the text node with: \> msg.payload = existing\_text\_in\_text\_node + new\_text + " \"; I store the existing text every time the function is triggered,… --- ## [Show web page php on the dashboard](https://discourse.nodered.org/t/show-web-page-php-on-the-dashboard/84375)
**Author:** [@telescopio](https://discourse.nodered.org/u/telescopio)\ **Replies:** 0\ **Last updated:** [8 January 2024 01:52 UTC](https://discourse.nodered.org/t/show-web-page-php-on-the-dashboard/84375 "2024-01-08T01:52:24Z")
Need some help to display a web page. I have this web page http://192.168.1.54/public.php that show me a image from web cam running the allsky sever (Home · AllskyTeam/allsky Wiki · GitHub) I want to display the image f… --- ## [Switch nodes problem - change nodes when certain value and reset](https://discourse.nodered.org/t/switch-nodes-problem-change-nodes-when-certain-value-and-reset/84367)
**Author:** [@btbr](https://discourse.nodered.org/u/btbr)\ **Replies:** 44\ **Last updated:** [8 January 2024 01:09 UTC](https://discourse.nodered.org/t/switch-nodes-problem-change-nodes-when-certain-value-and-reset/84367 "2024-01-08T01:09:35Z")
Hello All, I wonder if anyone can help solving this. I can't for the life of me work out a solution. When the raspberry switch node gets a 0 and it goes to the '66' switch node, I want it to be active until the value i… --- ## [Questions about context saving and something more](https://discourse.nodered.org/t/questions-about-context-saving-and-something-more/84357)
**Author:** [@bravogogo](https://discourse.nodered.org/u/bravogogo)\ **Replies:** 13\ **Last updated:** [7 January 2024 23:02 UTC](https://discourse.nodered.org/t/questions-about-context-saving-and-something-more/84357 "2024-01-07T23:02:54Z")
Hello Community, I admit I give up. I searched almost 2h or more the forum and internet and I couldn't find answers. I am with Node-RED for almost a week. And also not more than 2h/day with at least half of that time w… --- ## [Z WAVE ERROR auto](https://discourse.nodered.org/t/z-wave-error-auto/84276)
**Author:** [@daak](https://discourse.nodered.org/u/daak)\ **Replies:** 2\ **Last updated:** [7 January 2024 18:51 UTC](https://discourse.nodered.org/t/z-wave-error-auto/84276 "2024-01-07T18:51:35Z")
I have a z wave program with 189 remotecs zxt 600 the goal is to send shutdown commands to air conditioning units in the evening. I noticed that the program in auto mode does not work. I don't know where the problem com… --- ## [NodeRed does not show me the current status - closed](https://discourse.nodered.org/t/nodered-does-not-show-me-the-current-status-closed/84351)
**Author:** [@DrMo1986](https://discourse.nodered.org/u/DrMo1986)\ **Replies:** 7\ **Last updated:** [7 January 2024 18:11 UTC](https://discourse.nodered.org/t/nodered-does-not-show-me-the-current-status-closed/84351 "2024-01-07T18:11:16Z")
Hi guys, I have a problem with Node-Red in Homeassistant. The created processes work. However, I no longer see the current status. Also the triggering of the Inject is not possible. I have already checked that only one s… --- ## [\`on start\` tab confused how to use](https://discourse.nodered.org/t/on-start-tab-confused-how-to-use/84353)
**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\ **Replies:** 32\ **Last updated:** [7 January 2024 17:47 UTC](https://discourse.nodered.org/t/on-start-tab-confused-how-to-use/84353 "2024-01-07T17:47:48Z")
Folks, I'm writing/debugging a subflow. (My favorite thing) But I'm stuck on the on start tab. Reading a link I see this as an example: if (context.get("counter") === undefined) { context.set("counter", 0) } Whi… --- ## [Neater way of checking ping results](https://discourse.nodered.org/t/neater-way-of-checking-ping-results/84343)
**Author:** [@AndrewBeasley](https://discourse.nodered.org/u/AndrewBeasley)\ **Replies:** 7\ **Last updated:** [7 January 2024 12:55 UTC](https://discourse.nodered.org/t/neater-way-of-checking-ping-results/84343 "2024-01-07T12:55:10Z")
Trying to get my head around Javascript and Node-Red this year and looking to use a bit more code rather than convoluted flows that stretch across the screen... I am using the ping function from node-red-node-ping to ch… --- ## [Issues with mqtt thingspeak connection](https://discourse.nodered.org/t/issues-with-mqtt-thingspeak-connection/83536)
**Author:** [@issambfs1](https://discourse.nodered.org/u/issambfs1)\ **Replies:** 13\ **Last updated:** [7 January 2024 12:09 UTC](https://discourse.nodered.org/t/issues-with-mqtt-thingspeak-connection/83536 "2024-01-07T12:09:05Z")
hi everyone i have isuss i try many time find were problem is but i found northing. in my flow the node mqtt are config to send via mqtt to thingspeak . the node are working for 2 at 7 day and then it sopped or it block… --- ## [Combining text and variables together using change node](https://discourse.nodered.org/t/combining-text-and-variables-together-using-change-node/84363)
**Author:** [@greentrees](https://discourse.nodered.org/u/greentrees)\ **Replies:** 2\ **Last updated:** [7 January 2024 12:05 UTC](https://discourse.nodered.org/t/combining-text-and-variables-together-using-change-node/84363 "2024-01-07T12:05:32Z")
Hi, I've recently started using node red within my home assistant setup. I want to be able to customize notification messages by passing previous payload information with text. A simple example I want to send notificat… --- ## [coreBOS Integration nodes](https://discourse.nodered.org/t/corebos-integration-nodes/84364)
**Author:** [@joebordes](https://discourse.nodered.org/u/joebordes)\ **Replies:** 0\ **Last updated:** [7 January 2024 11:54 UTC](https://discourse.nodered.org/t/corebos-integration-nodes/84364 "2024-01-07T11:54:08Z")
Sharing a set of nodes to communicate with coreBOS node-red-corebos (node) - Node-RED Look for me if you have any questions! --- ## [Anyone with tabulator and Luxon experience?](https://discourse.nodered.org/t/anyone-with-tabulator-and-luxon-experience/84137)
**Author:** [@JeromeVISUALS](https://discourse.nodered.org/u/JeromeVISUALS)\ **Replies:** 5\ **Last updated:** [7 January 2024 10:58 UTC](https://discourse.nodered.org/t/anyone-with-tabulator-and-luxon-experience/84137 "2024-01-07T10:58:51Z")
Hi ! I use tabulator and luxon.js in a ui-template node, to get some of the incoming datas, including timestamp, to be displayed in a table. The code in UI\*template is using luxon to convert the incoming timestamp to a… --- ## [File Exists error after upgrade to node-red 3.1.1 (from 2.x)](https://discourse.nodered.org/t/file-exists-error-after-upgrade-to-node-red-3-1-1-from-2-x/83540)
**Author:** [@SoggyGeek](https://discourse.nodered.org/u/SoggyGeek)\ **Replies:** 3\ **Last updated:** [7 January 2024 10:30 UTC](https://discourse.nodered.org/t/file-exists-error-after-upgrade-to-node-red-3-1-1-from-2-x/83540 "2024-01-07T10:30:38Z")
I have just updated a running system on Windows 10 to the latest stable versions of Node-Red, as follows: 7 Dec 17:18:30 - \[info\] Node-RED version: v3.1.1 7 Dec 17:18:30 - \[info\] Node.js version: v20.10.0 7 Dec 17:18:3… --- ## [PC IOTService Tool](https://discourse.nodered.org/t/pc-iotservice-tool/84359)
**Author:** [@grahambaxter](https://discourse.nodered.org/u/grahambaxter)\ **Replies:** 0\ **Last updated:** [7 January 2024 06:27 UTC](https://discourse.nodered.org/t/pc-iotservice-tool/84359 "2024-01-07T06:27:48Z")
Please can anyone point me to a download of this software for configuring an Elfin EW11A modbus server? Every link I have found has resulted in a dead-end. Thank you --- ## [Fan box delayed switch off](https://discourse.nodered.org/t/fan-box-delayed-switch-off/84114)
**Author:** [@Andries78](https://discourse.nodered.org/u/Andries78)\ **Replies:** 2\ **Last updated:** [7 January 2024 08:24 UTC](https://discourse.nodered.org/t/fan-box-delayed-switch-off/84114 "2024-01-07T08:24:48Z")
Good afternoon All, (Apologies in advance for my English, which is not very good). I am new with Node-Red and by following several tutorials I am trying to gain some knowledge of how Node-Red works. However, I am now … --- ## [如何使用dropdown和text input設定條件來做資料的篩選](https://discourse.nodered.org/t/dropdown-text-input/84234)
**Author:** [@Ken1](https://discourse.nodered.org/u/Ken1)\ **Replies:** 1\ **Last updated:** [7 January 2024 08:43 UTC](https://discourse.nodered.org/t/dropdown-text-input/84234 "2024-01-07T08:43:51Z")
我想拿來做篩選的資料庫中的欄位有"行政區"、"單價(萬元/坪)"、"總面積(坪)"和其他的欄位，我總共有1個dropdown(名字是"行政區")和4個text input("預期最低單價(萬元/坪)"、"預期最高單價(萬元/坪)"、"期望最小總面積(坪)"、"期望最大總面積(坪)")，我的目的是想透過dropdown的選擇來篩選出"行政區"這個欄位和我所選的選項一樣的資料、資料中的"單價(萬元/坪)"界在我所輸入的text input"… --- ## [Nodered hacked by adding invisible nodes](https://discourse.nodered.org/t/nodered-hacked-by-adding-invisible-nodes/83860)
**Author:** [@iznogoud320](https://discourse.nodered.org/u/iznogoud320)\ **Replies:** 142\ **Last updated:** [6 January 2024 21:12 UTC](https://discourse.nodered.org/t/nodered-hacked-by-adding-invisible-nodes/83860 "2024-01-06T21:12:50Z")
Hello Everyone My nodered server has been hacked, by adding some invisible nodes to my flows.json while I was working on it. I detected it because of a nodered message stating that some nodes where changed without ay a… --- ## [Cant re-install the midi module](https://discourse.nodered.org/t/cant-re-install-the-midi-module/84340)
**Author:** [@AmirGhorbani](https://discourse.nodered.org/u/AmirGhorbani)\ **Replies:** 6\ **Last updated:** [6 January 2024 20:35 UTC](https://discourse.nodered.org/t/cant-re-install-the-midi-module/84340 "2024-01-06T20:35:15Z")
hello i was use the node red midi for send and receive the midi message before but now i cant install the mid module :slight\_smile: i dont know what is actually module : 1- node-red-contrib-midi-windows (node) - Node-… --- ## [\[Translation Contribution\] Spanish](https://discourse.nodered.org/t/translation-contribution-spanish/84013)
**Author:** [@joebordes](https://discourse.nodered.org/u/joebordes)\ **Replies:** 3\ **Last updated:** [6 January 2024 20:28 UTC](https://discourse.nodered.org/t/translation-contribution-spanish/84013 "2024-01-06T20:28:37Z")
Another attempt at Spanish translation. If someone could have a look and review it would be great! Thanks --- ## [Moment in function node](https://discourse.nodered.org/t/moment-in-function-node/84338)
**Author:** [@juntiedt](https://discourse.nodered.org/u/juntiedt)\ **Replies:** 5\ **Last updated:** [6 January 2024 19:01 UTC](https://discourse.nodered.org/t/moment-in-function-node/84338 "2024-01-06T19:01:33Z")
why does let time = moment().tz("Europe/Berlin").format("HH:mm:ss"); work in a function node on Node-Red 3.1.0 and not work in a function node on Node-Red 3.1.3 Problem seems to be that moment() is not accessible --- ## [Node-red flow for a virtual\_only hue lightbulb](https://discourse.nodered.org/t/node-red-flow-for-a-virtual-only-hue-lightbulb/84332)
**Author:** [@jpadie](https://discourse.nodered.org/u/jpadie)\ **Replies:** 2\ **Last updated:** [6 January 2024 18:53 UTC](https://discourse.nodered.org/t/node-red-flow-for-a-virtual-only-hue-lightbulb/84332 "2024-01-06T18:53:09Z")
Hi I'm looking for a flow or node that emulates a colour capable hue lightbulb so that I can receive commands via alexa. ultimately I will use these inputs to bridge into z2mqtt and control real-world colour capable zi… --- ## [Fixing "MaxListenersExceededWarning: Possible Eventemitter memory leak detected"?](https://discourse.nodered.org/t/fixing-maxlistenersexceededwarning-possible-eventemitter-memory-leak-detected/84335)
**Author:** [@binderth](https://discourse.nodered.org/u/binderth)\ **Replies:** 12\ **Last updated:** [6 January 2024 17:38 UTC](https://discourse.nodered.org/t/fixing-maxlistenersexceededwarning-possible-eventemitter-memory-leak-detected/84335 "2024-01-06T17:38:19Z")
I'm using Node-Red v3.1.3 as a docker container and just recently had to restart the container and by chance got the following entry in the logfiles: 6 Jan 14:46:39 - \[info\] Started flows (node:7) MaxListenersExceededW… --- ## [Simple - 'telegrambot' server](https://discourse.nodered.org/t/simple-telegrambot-server/84331)
**Author:** [@dynamicdave](https://discourse.nodered.org/u/dynamicdave)\ **Replies:** 1\ **Last updated:** [6 January 2024 17:37 UTC](https://discourse.nodered.org/t/simple-telegrambot-server/84331 "2024-01-06T17:37:07Z")
Situation: I have a number of Node-RED flows running on four RPi-4Bs performing various tasks around my home. Quite a few of these flows report a situation by sending text and/or a photo to Telegram on my mobile phone. … --- ## [Can no longer send Photos to Telegram (using node-red-controb-telegrambot)](https://discourse.nodered.org/t/can-no-longer-send-photos-to-telegram-using-node-red-controb-telegrambot/84317)
**Author:** [@chrisV](https://discourse.nodered.org/u/chrisV)\ **Replies:** 6\ **Last updated:** [6 January 2024 16:33 UTC](https://discourse.nodered.org/t/can-no-longer-send-photos-to-telegram-using-node-red-controb-telegrambot/84317 "2024-01-06T16:33:53Z")
Hi, I have been using the "sender" node from: "node-red-controb-telegrambot" in my home assistant. Many moons ago, I followed the documentation from: https://flows.nodered.org/node/node-red-contrib-telegrambot to set i… --- ## [How do I properly copy credit and flow after OS update on a RPI](https://discourse.nodered.org/t/how-do-i-properly-copy-credit-and-flow-after-os-update-on-a-rpi/84327)
**Author:** [@Nice\_to\_have](https://discourse.nodered.org/u/Nice_to_have)\ **Replies:** 3\ **Last updated:** [6 January 2024 16:10 UTC](https://discourse.nodered.org/t/how-do-i-properly-copy-credit-and-flow-after-os-update-on-a-rpi/84327 "2024-01-06T16:10:29Z")
Hi all, I have been struggling for a while with copying the credit and flows after an OS update. The OS that I used on my raspberry Pi 4 was outdated. I installed a small thumbdrive with the latest rpi os and boot from… [Previous page](https://discourse.nodered.org/latest.md?page=250) [Next page](https://discourse.nodered.org/latest.md?page=252)