# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=747

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

**Page:** 748

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## [Sending mqtt msg every 20 seconds](https://discourse.nodered.org/t/sending-mqtt-msg-every-20-seconds/26853)

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**Author:** [@Ian](https://discourse.nodered.org/u/Ian)\
**Replies:** 2\
**Last updated:** [18 May 2020 16:01 UTC](https://discourse.nodered.org/t/sending-mqtt-msg-every-20-seconds/26853 "2020-05-18T16:01:09Z")

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Hi I need to send an mqtt msg every 20 second with the content based on a received input that is updated about once every 4 hours. The input is on or off and the output 1 for on and 0 for off. Any suggestions as to the…

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## [Arduino to arduino serial communication](https://discourse.nodered.org/t/arduino-to-arduino-serial-communication/26774)

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**Author:** [@wasifazmi](https://discourse.nodered.org/u/wasifazmi)\
**Replies:** 1\
**Last updated:** [18 May 2020 14:53 UTC](https://discourse.nodered.org/t/arduino-to-arduino-serial-communication/26774 "2020-05-18T14:53:57Z")

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Hi, I have two Arduinos, master and slave. Master is is configured on node-red. \[{"id":"ecbb4b8e.2b4d28","type":"serial out","z":"8de82ddc.c1d07","name":"Serial Out","serial":"a5c662b5.9c21c","x":500,"y":180,"wires":\[…

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## [Extending UI of editor](https://discourse.nodered.org/t/extending-ui-of-editor/26667)

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**Author:** [@azigzag](https://discourse.nodered.org/u/azigzag)\
**Replies:** 3\
**Last updated:** [18 May 2020 12:29 UTC](https://discourse.nodered.org/t/extending-ui-of-editor/26667 "2020-05-18T12:29:42Z")

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Hi, I want to add a functionality to Node-RED editor, which analyzes the current model and performs some actions. For example, configuring an external system based on a flow. I don't want to implement it as a new node t…

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## [Influxdb Missing Data](https://discourse.nodered.org/t/influxdb-missing-data/26802)

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**Author:** [@JCLCN](https://discourse.nodered.org/u/JCLCN)\
**Replies:** 10\
**Last updated:** [18 May 2020 10:25 UTC](https://discourse.nodered.org/t/influxdb-missing-data/26802 "2020-05-18T10:25:06Z")

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Hi, I am new to node red. I'm using it to send some data to influxdb at a sampling rate of 1000Hz. The data is coming from a tcp in node (connected to OpenSignals (r)evolution). The data is in an array form. I've placed …

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## [Repeated messages with Vernemq mqtt broker](https://discourse.nodered.org/t/repeated-messages-with-vernemq-mqtt-broker/26759)

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**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 14\
**Last updated:** [18 May 2020 08:00 UTC](https://discourse.nodered.org/t/repeated-messages-with-vernemq-mqtt-broker/26759 "2020-05-18T08:00:43Z")

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I am using Vernemq MQTT broker with node-red both running in Docker in a Traefik Stack (though I don't expect that is the problem). I am seeing a strange symptom with repeated messages when subscribing to a topic. If I…

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## [Switch node to control ui](https://discourse.nodered.org/t/switch-node-to-control-ui/26805)

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**Author:** [@budiman098](https://discourse.nodered.org/u/budiman098)\
**Replies:** 2\
**Last updated:** [18 May 2020 06:56 UTC](https://discourse.nodered.org/t/switch-node-to-control-ui/26805 "2020-05-18T06:56:16Z")

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hy guys, can someone help me? i have a problem with my switch node in my node-red, the example i want make some node to read value number 12 and another node read value 15 (i inject the value), and the system in dashboa…

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## [Counting, would like some direction](https://discourse.nodered.org/t/counting-would-like-some-direction/26505)

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**Author:** [@mattk](https://discourse.nodered.org/u/mattk)\
**Replies:** 10\
**Last updated:** [18 May 2020 05:51 UTC](https://discourse.nodered.org/t/counting-would-like-some-direction/26505 "2020-05-18T05:51:48Z")

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Hi, I have built a esp8266 sump pump monitor that sends a mqtt signal to node-red when the float is tripped. I have modified someones elses flow, I don't yet understand the function nodes, but its working fine. What I …

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## [Change in flows OTA](https://discourse.nodered.org/t/change-in-flows-ota/26784)

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**Author:** [@kareemwaheed94](https://discourse.nodered.org/u/kareemwaheed94)\
**Replies:** 3\
**Last updated:** [18 May 2020 02:37 UTC](https://discourse.nodered.org/t/change-in-flows-ota/26784 "2020-05-18T02:37:49Z")

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Hi, I was wondering if there is a way to change in flows or update it remotely (OTA updates) i have a device running Linux with node-red installed, connected to the internet how to be able to do this updates with my p…

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## [Flow control issue](https://discourse.nodered.org/t/flow-control-issue/26779)

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**Author:** [@LosinIt](https://discourse.nodered.org/u/LosinIt)\
**Replies:** 8\
**Last updated:** [17 May 2020 22:32 UTC](https://discourse.nodered.org/t/flow-control-issue/26779 "2020-05-17T22:32:31Z")

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(Re)starting a flow is easy but how does one stop/reset/initialize a flow?

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## [Node-red, deConz and hue outdoor motionsensor](https://discourse.nodered.org/t/node-red-deconz-and-hue-outdoor-motionsensor/26816)

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**Author:** [@Hassefar](https://discourse.nodered.org/u/Hassefar)\
**Replies:** 1\
**Last updated:** [17 May 2020 21:19 UTC](https://discourse.nodered.org/t/node-red-deconz-and-hue-outdoor-motionsensor/26816 "2020-05-17T21:19:30Z")

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Hi Is there a way within node-red to change the sensitivity of a Hue Outdoor Motion sensor which is connected via a ConBee through DeConz?

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## [\[Solution-Flow\] Reset and retain a counter value at midnight](https://discourse.nodered.org/t/solution-flow-reset-and-retain-a-counter-value-at-midnight/26823)

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**Author:** [@thebaldgeek](https://discourse.nodered.org/u/thebaldgeek)\
**Replies:** 3\
**Last updated:** [17 May 2020 20:17 UTC](https://discourse.nodered.org/t/solution-flow-reset-and-retain-a-counter-value-at-midnight/26823 "2020-05-17T20:17:49Z")

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Spent way too long figuring out how to do this so thought I should share it. I count widgets (messages actually) and display the current count on the dashboard. Wanted to reset the count at midnight, but carry over the…

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## [Flujo logo siemens](https://discourse.nodered.org/t/flujo-logo-siemens/26804)

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**Author:** [@jgilabert](https://discourse.nodered.org/u/jgilabert)\
**Replies:** 5\
**Last updated:** [17 May 2020 18:35 UTC](https://discourse.nodered.org/t/flujo-logo-siemens/26804 "2020-05-17T18:35:57Z")

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cuando copio el codigo da error al copiarlo en node-red

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## [Escaping / in Telegram message](https://discourse.nodered.org/t/escaping-in-telegram-message/26771)

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**Author:** [@Hunter](https://discourse.nodered.org/u/Hunter)\
**Replies:** 11\
**Last updated:** [17 May 2020 14:29 UTC](https://discourse.nodered.org/t/escaping-in-telegram-message/26771 "2020-05-17T14:29:17Z")

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Hello, Some of my messages contain text with is preceded by a slash. The telegram-bot parses that into a blue, clickable command : Any idea what the best way is to escape this?

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## [Any way of effectively swapping the outputs](https://discourse.nodered.org/t/any-way-of-effectively-swapping-the-outputs/26791)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 8\
**Last updated:** [17 May 2020 13:22 UTC](https://discourse.nodered.org/t/any-way-of-effectively-swapping-the-outputs/26791 "2020-05-17T13:22:11Z")

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I believe the answer is no but I'd thought I'd ask as there is no "doesn't contain" option in the switch node Would just help in tidying up wires - not critical issue :slight\_smile: \[edit\]Maybe some simple JSONAta?\[/…

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## [Node or nodes which takes pictures with an ip camera with username and password each time when it have an request](https://discourse.nodered.org/t/node-or-nodes-which-takes-pictures-with-an-ip-camera-with-username-and-password-each-time-when-it-have-an-request/26554)

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**Author:** [@VladMarta](https://discourse.nodered.org/u/VladMarta)\
**Replies:** 20\
**Last updated:** [17 May 2020 12:47 UTC](https://discourse.nodered.org/t/node-or-nodes-which-takes-pictures-with-an-ip-camera-with-username-and-password-each-time-when-it-have-an-request/26554 "2020-05-17T12:47:22Z")

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Hello. I'm new on Node-RED and I don't know how it works all nodes. I want to take a picture with an IP camera and save it in (ex: /home/pi/Pictures foleder) on Raspberry each time when I have an request from an "rpi-g…

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## [Modbus SolarEdge SE8K RTU](https://discourse.nodered.org/t/modbus-solaredge-se8k-rtu/26744)

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**Author:** [@el.indifferente](https://discourse.nodered.org/u/el.indifferente)\
**Replies:** 2\
**Last updated:** [17 May 2020 12:04 UTC](https://discourse.nodered.org/t/modbus-solaredge-se8k-rtu/26744 "2020-05-17T12:04:16Z")

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Hi, Done some programming before in my life, but I thought it would be funny to start something new and so I ended up with NodeRed on a RPi3. My neighbour does have a SolarEdge photovoltaik inverter plus a meter, accor…

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## [Fritz!DECT 200 Powerplug](https://discourse.nodered.org/t/fritz-dect-200-powerplug/26781)

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**Author:** [@alos-source](https://discourse.nodered.org/u/alos-source)\
**Replies:** 3\
**Last updated:** [17 May 2020 10:50 UTC](https://discourse.nodered.org/t/fritz-dect-200-powerplug/26781 "2020-05-17T10:50:09Z")

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Hey Guys, i am looking for a way to read out data from the "Fritz!DECT 200" which is connected to my Fritz!Box. My Project would be reading out the current power consumption (of my washing maschine) to notify me when t…

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## [Writing functions to send more than 1 payload and topic](https://discourse.nodered.org/t/writing-functions-to-send-more-than-1-payload-and-topic/26775)

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**Author:** [@Chenko](https://discourse.nodered.org/u/Chenko)\
**Replies:** 4\
**Last updated:** [17 May 2020 10:17 UTC](https://discourse.nodered.org/t/writing-functions-to-send-more-than-1-payload-and-topic/26775 "2020-05-17T10:17:19Z")

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Hello I just started using node red and i have this challenge, i want to write a function that can pass more than on payload and topic. Please anyone help with explanations, and ways forward.

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## [MQTT Homie Convention Node - questions about usage](https://discourse.nodered.org/t/mqtt-homie-convention-node-questions-about-usage/26541)

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**Author:** [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)\
**Replies:** 21\
**Last updated:** [17 May 2020 07:52 UTC](https://discourse.nodered.org/t/mqtt-homie-convention-node-questions-about-usage/26541 "2020-05-17T07:52:33Z")

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Hi again! As mentioned in the last of my topics, I need to better understand how to use and whether I can use the Homie Convention nodes. Here is what I'm trying to do. I have a load of old wireless switches and plugs…

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## [How to set button color on HTTP node response code?](https://discourse.nodered.org/t/how-to-set-button-color-on-http-node-response-code/26565)

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**Author:** [@Nealix](https://discourse.nodered.org/u/Nealix)\
**Replies:** 8\
**Last updated:** [16 May 2020 23:14 UTC](https://discourse.nodered.org/t/how-to-set-button-color-on-http-node-response-code/26565 "2020-05-16T23:14:59Z")

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Is there an easy method to get hold of the HTTP response status code when I use the HTTP node to send a GET command and URL? I would like to change the color of the switch button, ONLY if the remote relay received t…

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## [Work-around to the new Dropbox device limit](https://discourse.nodered.org/t/work-around-to-the-new-dropbox-device-limit/26673)

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**Author:** [@hepcat72](https://discourse.nodered.org/u/hepcat72)\
**Replies:** 11\
**Last updated:** [16 May 2020 19:38 UTC](https://discourse.nodered.org/t/work-around-to-the-new-dropbox-device-limit/26673 "2020-05-16T19:38:46Z")

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The new device limit for free dropbox accounts has been around for awhile, but I only just discovered it when I got a new laptop because apparently, existing devices get grandfathered in. So in order for me to install Dr…

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## [Node-red docker settings.js](https://discourse.nodered.org/t/node-red-docker-settings-js/26529)

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**Author:** [@nheine](https://discourse.nodered.org/u/nheine)\
**Replies:** 9\
**Last updated:** [16 May 2020 14:40 UTC](https://discourse.nodered.org/t/node-red-docker-settings-js/26529 "2020-05-16T14:40:07Z")

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Hi, I am using node-red in docker container. Starting it up with --settings argument to pass on a custom settings file. The container starts up fine but after a while it goes unhealthy and reports: internal/modules/cjs…

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## [Make complete working copy of existing Node-RED install](https://discourse.nodered.org/t/make-complete-working-copy-of-existing-node-red-install/26643)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 31\
**Last updated:** [16 May 2020 12:18 UTC](https://discourse.nodered.org/t/make-complete-working-copy-of-existing-node-red-install/26643 "2020-05-16T12:18:05Z")

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Ok, as most of you are aware, I've got 110 tabs on my main Win10 PC standard install and I REALLY should sort this out! :slight\_smile: So, what I'm thinking is, make a copy of it (somehow) and then edit the main so it …

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## [Newbie storing msg.payload](https://discourse.nodered.org/t/newbie-storing-msg-payload/26709)

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**Author:** [@crester](https://discourse.nodered.org/u/crester)\
**Replies:** 4\
**Last updated:** [16 May 2020 09:55 UTC](https://discourse.nodered.org/t/newbie-storing-msg-payload/26709 "2020-05-16T09:55:58Z")

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Hello All. newbie here, trying to understand nodered. I have a msg.payload that I need to save for later use. Meanwhile I need to perform some processess that change the msg.payload. After them I need to recover agai…

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## [How to access CM3 GPIO?](https://discourse.nodered.org/t/how-to-access-cm3-gpio/26730)

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**Author:** [@jinyistudio](https://discourse.nodered.org/u/jinyistudio)\
**Replies:** 2\
**Last updated:** [16 May 2020 09:19 UTC](https://discourse.nodered.org/t/how-to-access-cm3-gpio/26730 "2020-05-16T09:19:57Z")

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Hi My node-red is v1.0.6 but it not support Raspberry PI CM3. How can i access with CM3 GPIO ?

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## [Node red contrib OLED, can't download nodes](https://discourse.nodered.org/t/node-red-contrib-oled-cant-download-nodes/26632)

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**Author:** [@nobb26](https://discourse.nodered.org/u/nobb26)\
**Replies:** 10\
**Last updated:** [16 May 2020 08:07 UTC](https://discourse.nodered.org/t/node-red-contrib-oled-cant-download-nodes/26632 "2020-05-16T08:07:18Z")

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I have not been successful in using nodes associated with OLED. Either OLED node and dependencies won't install , or if they do install cannot use them in a flow as they throw up error messages. Have tried upgrading npm…

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## [Simulating Input registers in Modbus Server in Node-red](https://discourse.nodered.org/t/simulating-input-registers-in-modbus-server-in-node-red/26736)

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**Author:** [@saimohanty](https://discourse.nodered.org/u/saimohanty)\
**Replies:** 0\
**Last updated:** [16 May 2020 06:52 UTC](https://discourse.nodered.org/t/simulating-input-registers-in-modbus-server-in-node-red/26736 "2020-05-16T06:52:50Z")

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Hi All, I have created a modbus tcp server in node-red and using third party clienttool to read/write registers. I am able to write/read to holding registers and coils. But i want to simulate a particular input registe…

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## [Communicate with an old device](https://discourse.nodered.org/t/communicate-with-an-old-device/25932)

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**Author:** [@maccoa](https://discourse.nodered.org/u/maccoa)\
**Replies:** 16\
**Last updated:** [16 May 2020 06:05 UTC](https://discourse.nodered.org/t/communicate-with-an-old-device/25932 "2020-05-16T06:05:07Z")

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Hello . at work, I try to communicate with a fairly old device. on a pc window I used a serial port monitor, to see what was going on. with the modbus RTU protocol: \[21/04/2020 20:34:30\] Modbus Request (COM4) Address…

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## [MongoError: docs parameter must be an array of documents (mongodb3)](https://discourse.nodered.org/t/mongoerror-docs-parameter-must-be-an-array-of-documents-mongodb3/18191)

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**Author:** [@dtuiot](https://discourse.nodered.org/u/dtuiot)\
**Replies:** 1\
**Last updated:** [16 May 2020 05:19 UTC](https://discourse.nodered.org/t/mongoerror-docs-parameter-must-be-an-array-of-documents-mongodb3/18191 "2020-05-16T05:19:08Z")

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Hi, We're experimenting with storing data to a MongoDB. As it is now, we can store data on the database, but it seems like only the 'msg.payload' is stored (as document) - and not the whole msg object. The flow is very…

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## [Inline keyboard chat](https://discourse.nodered.org/t/inline-keyboard-chat/26257)

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**Author:** [@Marty1982](https://discourse.nodered.org/u/Marty1982)\
**Replies:** 5\
**Last updated:** [15 May 2020 23:23 UTC](https://discourse.nodered.org/t/inline-keyboard-chat/26257 "2020-05-15T23:23:15Z")

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Hi all! I ask about how to generate a chat via telegram when something happens. For example, a certain node turn on the lights, when lights are on, i want to receive a telegram to choose what i want to do, Keep them ON …

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