# Latest **URL:** https://discourse.nodered.org/latest.md?page=624 [Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md) **Page:** 625 --- ## [If 1 message ... if 2 messages](https://discourse.nodered.org/t/if-1-message-if-2-messages/58753)
**Author:** [@Miliano](https://discourse.nodered.org/u/Miliano)\ **Replies:** 5\ **Last updated:** [21 February 2022 22:42 UTC](https://discourse.nodered.org/t/if-1-message-if-2-messages/58753 "2022-02-21T22:42:44Z")
Hello :slight\_smile: I have a little problem and can´t find a solution. Hope you can give me a tip. I need something like this: Input: message a -\> Output message a Input: message b -\> Output message b Input: messag… --- ## [Connecting to Mariadb server on another computer](https://discourse.nodered.org/t/connecting-to-mariadb-server-on-another-computer/58764)
**Author:** [@jbudd](https://discourse.nodered.org/u/jbudd)\ **Replies:** 4\ **Last updated:** [21 February 2022 21:54 UTC](https://discourse.nodered.org/t/connecting-to-mariadb-server-on-another-computer/58764 "2022-02-21T21:54:17Z")
I have MariaDB running on a Raspberry Pi (192.168.1.11) and I can access it from Node-red on that Pi, using node-red-node-mysql. In /etc/mysql/mariadb.conf.d/50-server.cnf I have bind-address = 0.0.0.0 netstat -ant | … --- ## [Node-Red in an AWS Ubuntu Instance - How to download an CSV file](https://discourse.nodered.org/t/node-red-in-an-aws-ubuntu-instance-how-to-download-an-csv-file/58766)
**Author:** [@DemalCal96](https://discourse.nodered.org/u/DemalCal96)\ **Replies:** 0\ **Last updated:** [21 February 2022 19:22 UTC](https://discourse.nodered.org/t/node-red-in-an-aws-ubuntu-instance-how-to-download-an-csv-file/58766 "2022-02-21T19:22:57Z")
Hello, I'm working with Node-Red using an AWS Instance of Ubuntu in EC2. I'm generating an Array of JSON files that I'm using to show in a table over a dashboard, but I want people to have the chance to download that ta… --- ## [flowContext does not work](https://discourse.nodered.org/t/flowcontext-does-not-work/58703)
**Author:** [@JJdave](https://discourse.nodered.org/u/JJdave)\ **Replies:** 6\ **Last updated:** [21 February 2022 19:20 UTC](https://discourse.nodered.org/t/flowcontext-does-not-work/58703 "2022-02-21T19:20:22Z")
Hi there I have some troubles with flowContext in below flow. The local variable SollPosSchlafen is properly set as an integer? Is there a way to check the type of the variable?? On the other hand, the coser\_set\_pos do… --- ## [How to use GY-521 MPU-6050 with Node-RED?](https://discourse.nodered.org/t/how-to-use-gy-521-mpu-6050-with-node-red/58741)
**Author:** [@Bongini](https://discourse.nodered.org/u/Bongini)\ **Replies:** 3\ **Last updated:** [21 February 2022 17:58 UTC](https://discourse.nodered.org/t/how-to-use-gy-521-mpu-6050-with-node-red/58741 "2022-02-21T17:58:32Z")
Hi, I'm new in this forum. I use Node-Red v 1.3.4 and I'm trying to extract data from a MPU-6050 sensor. I don't know exactly how a I2C bus works, so I downloaded the package node-red-contrib-i2c but it seems doesn't wo… --- ## [Clickable Image](https://discourse.nodered.org/t/clickable-image/18983)
**Author:** [@dr\_cave\_dweller](https://discourse.nodered.org/u/dr_cave_dweller)\ **Replies:** 4\ **Last updated:** [21 February 2022 16:42 UTC](https://discourse.nodered.org/t/clickable-image/18983 "2022-02-21T16:42:24Z")
Hi all, I want to place an image onto the dash board and make the image clickable, so that it makes you go to the next tab. Any suggestions on how to do this? I tried making a background image then floating a transpar… --- ## [How to show qrcode in dashboard?](https://discourse.nodered.org/t/how-to-show-qrcode-in-dashboard/58570)
**Author:** [@UnknownForever](https://discourse.nodered.org/u/UnknownForever)\ **Replies:** 9\ **Last updated:** [21 February 2022 16:32 UTC](https://discourse.nodered.org/t/how-to-show-qrcode-in-dashboard/58570 "2022-02-21T16:32:23Z")
Hi guys, I want to display my qrcode in dashboard but I'm not sure how to do it. Could someone tell me how it can be done. --- ## [Many problems after update to v2.2.0](https://discourse.nodered.org/t/many-problems-after-update-to-v2-2-0/58091)
**Author:** [@SergioRT](https://discourse.nodered.org/u/SergioRT)\ **Replies:** 7\ **Last updated:** [21 February 2022 16:08 UTC](https://discourse.nodered.org/t/many-problems-after-update-to-v2-2-0/58091 "2022-02-21T16:08:40Z")
First problem : all ui\_spacers used in the dashboard have no more groups ! They appear to own to one of my flows. Then "tcp in" node : the output options are : stream of strings delimited by character "@' Now, in this… --- ## [Dangling symlinks after update to 2.2.0](https://discourse.nodered.org/t/dangling-symlinks-after-update-to-2-2-0/58583)
**Author:** [@yesdred](https://discourse.nodered.org/u/yesdred)\ **Replies:** 0\ **Last updated:** [18 February 2022 08:42 UTC](https://discourse.nodered.org/t/dangling-symlinks-after-update-to-2-2-0/58583 "2022-02-18T08:42:58Z")
I recently updated Node RED to version 2.2.0 and my nightly rsync backup complains about dangling symlinks: symlink has no referent: "/home/pi/.node-red/node\_modules/.bin/prebuild-install" symlink has no referent: "/hom… --- ## [Execute HTTP request for each element in array](https://discourse.nodered.org/t/execute-http-request-for-each-element-in-array/58751)
**Author:** [@TimKuijpers2002](https://discourse.nodered.org/u/TimKuijpers2002)\ **Replies:** 1\ **Last updated:** [21 February 2022 15:29 UTC](https://discourse.nodered.org/t/execute-http-request-for-each-element-in-array/58751 "2022-02-21T15:29:39Z")
Hello everyone, I just started working with Node-Red and I love the simplicity about it. But due to the simplicity, I am unable to find an answer to my question "Is it possible, to execute an HTTP request for each eleme… --- ## [Some Help about my flow](https://discourse.nodered.org/t/some-help-about-my-flow/58150)
**Author:** [@wtrk](https://discourse.nodered.org/u/wtrk)\ **Replies:** 30\ **Last updated:** [21 February 2022 14:57 UTC](https://discourse.nodered.org/t/some-help-about-my-flow/58150 "2022-02-21T14:57:01Z")
Hello all after long time I need some help, I think it should be basic. My flow is I share below. Im greatfull for your helps. I take some digital input from outside device, just port is on/off information. 1st questi… --- ## [Read My TimeOut Remaining value](https://discourse.nodered.org/t/read-my-timeout-remaining-value/58745)
**Author:** [@CarloJongen](https://discourse.nodered.org/u/CarloJongen)\ **Replies:** 3\ **Last updated:** [21 February 2022 14:44 UTC](https://discourse.nodered.org/t/read-my-timeout-remaining-value/58745 "2022-02-21T14:44:30Z")
In my workflow I'm using the "My Timeout" node to trigger something. It would be interesting for me if I could also read and display the Remaining counter just below the node. Purpose would be to be able to read the rema… --- ## [Regarding to send a message from Node red to Niagara 4 framework](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603)
**Author:** [@Hitesh1234](https://discourse.nodered.org/u/Hitesh1234)\ **Replies:** 31\ **Last updated:** [21 February 2022 14:38 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603 "2022-02-21T14:38:09Z")
Hello,,, I would like to tell you that I would like to send a message or post a message from Node-red to Niagara 4 framework via Obix communication. The message from Niagara 4 can be read into the Node-red but the messa… --- ## [Save HTML select tag selection for reload value in config screen](https://discourse.nodered.org/t/save-html-select-tag-selection-for-reload-value-in-config-screen/58731)
**Author:** [@NicoloToscani](https://discourse.nodered.org/u/NicoloToscani)\ **Replies:** 6\ **Last updated:** [21 February 2022 13:58 UTC](https://discourse.nodered.org/t/save-html-select-tag-selection-for-reload-value-in-config-screen/58731 "2022-02-21T13:58:27Z")
Hi, in my node I need to store the value of the selected select tag to be able to set the value when I re-open config screen. Now when I open config display after first configuration, the first value in the list is alw… --- ## [OPCUA client error](https://discourse.nodered.org/t/opcua-client-error/58748)
**Author:** [@FabioT](https://discourse.nodered.org/u/FabioT)\ **Replies:** 1\ **Last updated:** [21 February 2022 13:50 UTC](https://discourse.nodered.org/t/opcua-client-error/58748 "2022-02-21T13:50:05Z")
Hi all, I'm working with a opcua server/client architecture in my nore-red app. At every deployment/restart I have 3 different errors, related to "client secure channel layer" as detailed in attached image. Being a no… --- ## [How to dynamically create a group and tables on node-red?](https://discourse.nodered.org/t/how-to-dynamically-create-a-group-and-tables-on-node-red/58584)
**Author:** [@PaulLEBG](https://discourse.nodered.org/u/PaulLEBG)\ **Replies:** 3\ **Last updated:** [21 February 2022 12:12 UTC](https://discourse.nodered.org/t/how-to-dynamically-create-a-group-and-tables-on-node-red/58584 "2022-02-21T12:12:30Z")
Hello everyone, I have a project to connect my arduino to my node-red server on rpi. I have done it but I want to create automatically the groups and tables that correspond to my arduino. Do you have any solutions for m… --- ## [Light control with multiple motion sensors](https://discourse.nodered.org/t/light-control-with-multiple-motion-sensors/58744)
**Author:** [@flemmingss](https://discourse.nodered.org/u/flemmingss)\ **Replies:** 0\ **Last updated:** [21 February 2022 12:04 UTC](https://discourse.nodered.org/t/light-control-with-multiple-motion-sensors/58744 "2022-02-21T12:04:40Z")
Hi. I use this to turn a light on when motion is sensed, and off when no motion for 2 minutes. I am using a Home-Assistent group with multiple sensors inside to accomplish this, but if I want to include multiple senso… --- ## [Modbus Flex Write Error](https://discourse.nodered.org/t/modbus-flex-write-error/58613)
**Author:** [@fedex03](https://discourse.nodered.org/u/fedex03)\ **Replies:** 5\ **Last updated:** [21 February 2022 11:20 UTC](https://discourse.nodered.org/t/modbus-flex-write-error/58613 "2022-02-21T11:20:23Z")
Hi there, I'm working on a project that involves the Modbus Node. Since I need to write several coil and register into a modbus server, I used the Modbus-Flex-Write node to collect every "write" message. Unfortunately… --- ## [Deploy Event not fired](https://discourse.nodered.org/t/deploy-event-not-fired/58728)
**Author:** [@okm](https://discourse.nodered.org/u/okm)\ **Replies:** 3\ **Last updated:** [21 February 2022 10:31 UTC](https://discourse.nodered.org/t/deploy-event-not-fired/58728 "2022-02-21T10:31:01Z")
Hello, I want to take some after-deployment action. So the deploy event described here RED.events : Node-RED is the one I want to use. But somehow the event is not fired / I am not able to catch it. I use Node Red 2.2… --- ## [Add fields to custom logger](https://discourse.nodered.org/t/add-fields-to-custom-logger/58735)
**Author:** [@RubenVega](https://discourse.nodered.org/u/RubenVega)\ **Replies:** 3\ **Last updated:** [21 February 2022 09:32 UTC](https://discourse.nodered.org/t/add-fields-to-custom-logger/58735 "2022-02-21T09:32:49Z")
Hello! I am trying to improve the quality of our logs and investigating the possibility of custom logger. I have found it quite useful, but I would like to know if it is possible to add by default fields included in th… --- ## [How to connect scanner using serial port?](https://discourse.nodered.org/t/how-to-connect-scanner-using-serial-port/58729)
**Author:** [@UnknownForever](https://discourse.nodered.org/u/UnknownForever)\ **Replies:** 5\ **Last updated:** [21 February 2022 09:30 UTC](https://discourse.nodered.org/t/how-to-connect-scanner-using-serial-port/58729 "2022-02-21T09:30:35Z")
Hi, I'm new to node red. I try to connect my barcode scanner to node red using serial node. But I'm Not sure how to connect it. --- ## [Create an efficient flow with multiple sensors](https://discourse.nodered.org/t/create-an-efficient-flow-with-multiple-sensors/58518)
**Author:** [@nawt888](https://discourse.nodered.org/u/nawt888)\ **Replies:** 6\ **Last updated:** [21 February 2022 08:49 UTC](https://discourse.nodered.org/t/create-an-efficient-flow-with-multiple-sensors/58518 "2022-02-21T08:49:51Z")
Hello, I currently have sensors on the 3 doors to my home to understand which doors are open/closed, when those doors are opened/closed and whether the entire house is closed or not. I have a further 20 sensors I have … --- ## [Get Node-Red running version](https://discourse.nodered.org/t/get-node-red-running-version/58701)
**Author:** [@fmarzocca](https://discourse.nodered.org/u/fmarzocca)\ **Replies:** 4\ **Last updated:** [20 February 2022 16:36 UTC](https://discourse.nodered.org/t/get-node-red-running-version/58701 "2022-02-20T16:36:33Z")
Is there a way to get the current running version of NodeRed from the terminal or from a script, while NR is running and without opening the admin editor? --- ## [Node-red and Electron node\_modules issue](https://discourse.nodered.org/t/node-red-and-electron-node-modules-issue/58730)
**Author:** [@SS-Akhilesh-Appala](https://discourse.nodered.org/u/SS-Akhilesh-Appala)\ **Replies:** 0\ **Last updated:** [21 February 2022 06:25 UTC](https://discourse.nodered.org/t/node-red-and-electron-node-modules-issue/58730 "2022-02-21T06:25:30Z")
Hi Team, I am facing one issue related to node-red and electron js combined installer. Scenario: I have a desktop application (Angular) that is being packaged or created installer using ElectronJS. I have integrated … --- ## [Bigtimer always ON temp override](https://discourse.nodered.org/t/bigtimer-always-on-temp-override/58705)
**Author:** [@ralong777](https://discourse.nodered.org/u/ralong777)\ **Replies:** 2\ **Last updated:** [21 February 2022 04:59 UTC](https://discourse.nodered.org/t/bigtimer-always-on-temp-override/58705 "2022-02-21T04:59:39Z")
Help my big timer is always in ON temp override state. I don know how it happened and how to turn it off. there is no info on the site what that even is. --- ## [ADC MCP3424 Help](https://discourse.nodered.org/t/adc-mcp3424-help/58573)
**Author:** [@Daggo](https://discourse.nodered.org/u/Daggo)\ **Replies:** 4\ **Last updated:** [21 February 2022 03:27 UTC](https://discourse.nodered.org/t/adc-mcp3424-help/58573 "2022-02-21T03:27:32Z")
Hi all. I purchased some of these PCBs with some ADC on them, see here: ADC Things I saw there was a node called node-red-contrib-redplc-rpi-mcp342x so I figured I'd be good to go. But no... Each node has 4 outputs … --- ## [Help with how to upload subflows to \*the library\*](https://discourse.nodered.org/t/help-with-how-to-upload-subflows-to-the-library/58715)
**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\ **Replies:** 8\ **Last updated:** [20 February 2022 21:30 UTC](https://discourse.nodered.org/t/help-with-how-to-upload-subflows-to-the-library/58715 "2022-02-20T21:30:41Z")
I am reading the stuff written on the page/s but it isn't making sense to me. I am wanting to upload a subflow, but the closest I can find is a NODE - fair enough in some ways. But then it is talking about the director… --- ## [Un-used config' nodes - click here to see them. Not understanding it](https://discourse.nodered.org/t/un-used-config-nodes-click-here-to-see-them-not-understanding-it/58712)
**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\ **Replies:** 4\ **Last updated:** [20 February 2022 20:47 UTC](https://discourse.nodered.org/t/un-used-config-nodes-click-here-to-see-them-not-understanding-it/58712 "2022-02-20T20:47:38Z")
I am (obviously) missing something here. I press the DEPLOY button and am shown this message. But I open the config nodes list and click on the unused and there aren't any. Where's the elephant? :wink: --- ## [MQTT in node not working properly in Node-Red 2.2.1](https://discourse.nodered.org/t/mqtt-in-node-not-working-properly-in-node-red-2-2-1/58428)
**Author:** [@JmmyGun](https://discourse.nodered.org/u/JmmyGun)\ **Replies:** 4\ **Last updated:** [20 February 2022 20:04 UTC](https://discourse.nodered.org/t/mqtt-in-node-not-working-properly-in-node-red-2-2-1/58428 "2022-02-20T20:04:55Z")
Hi all. I've a problem with MQTT in node I use mosquitto. When i make full deploy (ex. move MQTT in node) I get this error back on the debug console, "Error stopping node: Close timed out" mosquitto version 2.0.11 … --- ## [How to set the output-property of the file-read node with a function node?](https://discourse.nodered.org/t/how-to-set-the-output-property-of-the-file-read-node-with-a-function-node/58686)
**Author:** [@oliver](https://discourse.nodered.org/u/oliver)\ **Replies:** 9\ **Last updated:** [20 February 2022 19:27 UTC](https://discourse.nodered.org/t/how-to-set-the-output-property-of-the-file-read-node-with-a-function-node/58686 "2022-02-20T19:27:54Z")
For a multipage node-red webserver, serving stored html pages and images, the function node should set the output-property of the file-read node to text or buffer, depending on reading and serving html or images. Now… [Previous page](https://discourse.nodered.org/latest.md?page=623) [Next page](https://discourse.nodered.org/latest.md?page=625)