# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=648

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

**Page:** 649

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## [Passing Variables to subflows](https://discourse.nodered.org/t/passing-variables-to-subflows/36409)

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**Author:** [@Curious](https://discourse.nodered.org/u/Curious)\
**Replies:** 1\
**Last updated:** [23 November 2020 20:39 UTC](https://discourse.nodered.org/t/passing-variables-to-subflows/36409 "2020-11-23T20:39:07Z")

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I am still fairly new to Node-Red and progressing slowly, although today I built my first sub flow so that I can reuse this functionality. I have gone through several documents and videos about sub flows but still do not…

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## [Twitter integration discord](https://discourse.nodered.org/t/twitter-integration-discord/36417)

<div class="topic-metadata">

**Author:** [@Barbouuuu](https://discourse.nodered.org/u/Barbouuuu)\
**Replies:** 0\
**Last updated:** [23 November 2020 18:49 UTC](https://discourse.nodered.org/t/twitter-integration-discord/36417 "2020-11-23T18:49:26Z")

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Hi, I have a very simple flow that allows me to send tweets from users I follow into a discord channel. ( I use node-red-node-twitter's tweeter in and node-red-node-discord's send message nodes ) The thing is that the…

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## [How to set color of Hue lamp?](https://discourse.nodered.org/t/how-to-set-color-of-hue-lamp/36408)

<div class="topic-metadata">

**Author:** [@hdehaseleer](https://discourse.nodered.org/u/hdehaseleer)\
**Replies:** 2\
**Last updated:** [23 November 2020 18:47 UTC](https://discourse.nodered.org/t/how-to-set-color-of-hue-lamp/36408 "2020-11-23T18:47:16Z")

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I'm very new to home assistant and node-red. I could already set a Hue lamp to on. But how can i set the color? I tried nearly every syntax. I could nod find somewhere a description. My configuration. The error I…

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## [Controlling a device based on 2 inputs](https://discourse.nodered.org/t/controlling-a-device-based-on-2-inputs/35892)

<div class="topic-metadata">

**Author:** [@mintgroen](https://discourse.nodered.org/u/mintgroen)\
**Replies:** 39\
**Last updated:** [22 November 2020 18:45 UTC](https://discourse.nodered.org/t/controlling-a-device-based-on-2-inputs/35892 "2020-11-22T18:45:59Z")

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I amd trying to control a pump in the central heating system, based on the input of 2 thermostats. The pump needs to run when the living room temp is lower than the living room set temp. The living room thermostat is t…

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## [Control samsung TV - Returns list of apps installed on your TV](https://discourse.nodered.org/t/control-samsung-tv-returns-list-of-apps-installed-on-your-tv/35916)

<div class="topic-metadata">

**Author:** [@John245](https://discourse.nodered.org/u/John245)\
**Replies:** 9\
**Last updated:** [23 November 2020 17:39 UTC](https://discourse.nodered.org/t/control-samsung-tv-returns-list-of-apps-installed-on-your-tv/35916 "2020-11-23T17:39:00Z")

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I'm able to send key codes to my Samsung TV so the set-up is working. However, how do I retrieve the list of apps. There is a Node for it but it seems that nothings happen when I use it. What should be in the inject Nod…

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## [Simple flow to blink, Pin 13 not connecting](https://discourse.nodered.org/t/simple-flow-to-blink-pin-13-not-connecting/36247)

<div class="topic-metadata">

**Author:** [@adamelli](https://discourse.nodered.org/u/adamelli)\
**Replies:** 3\
**Last updated:** [23 November 2020 14:11 UTC](https://discourse.nodered.org/t/simple-flow-to-blink-pin-13-not-connecting/36247 "2020-11-23T14:11:22Z")

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I installed the Arduino nodes: https://flows.nodered.org/node/node-red-node-arduino I imported the flow. The example SimpleDigitalFirmata sketch was uploaded to the Arduino Uno (even though I want to use an ESP32). And …

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## [MQTT to Sonoff and Ring Devies](https://discourse.nodered.org/t/mqtt-to-sonoff-and-ring-devies/36392)

<div class="topic-metadata">

**Author:** [@swanside](https://discourse.nodered.org/u/swanside)\
**Replies:** 8\
**Last updated:** [23 November 2020 13:48 UTC](https://discourse.nodered.org/t/mqtt-to-sonoff-and-ring-devies/36392 "2020-11-23T13:48:00Z")

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Hello I am looking at an alternative to make my own MQTT maybe with a Raspberry PI. But I want to control Sonoff devices from using Ring Motion and Door sensors. Is this possible and what would be thebest way to go abou…

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## [Converting data from CSV file](https://discourse.nodered.org/t/converting-data-from-csv-file/36394)

<div class="topic-metadata">

**Author:** [@T0mmy](https://discourse.nodered.org/u/T0mmy)\
**Replies:** 2\
**Last updated:** [23 November 2020 13:29 UTC](https://discourse.nodered.org/t/converting-data-from-csv-file/36394 "2020-11-23T13:29:59Z")

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Hello I am importing data from a CSV file using the csv parser and that all work great. My problem is that I want to convert the timestamp of the data into something I can use in influxdb. This is how it looks from th…

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## [Deploy camunda diagram using node-red](https://discourse.nodered.org/t/deploy-camunda-diagram-using-node-red/36384)

<div class="topic-metadata">

**Author:** [@AhmedNageh08](https://discourse.nodered.org/u/AhmedNageh08)\
**Replies:** 8\
**Last updated:** [23 November 2020 12:33 UTC](https://discourse.nodered.org/t/deploy-camunda-diagram-using-node-red/36384 "2020-11-23T12:33:48Z")

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i'm trying to deploy camunda diagram using nodered but it shows me this error : "Error: ENOENT: no such file or directory, open 'C:/Users/Ahmed/Desktop/process1.bpmn'" P.S. the nodered isn't running locally , it's runn…

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## [Problem with this nodes](https://discourse.nodered.org/t/problem-with-this-nodes/36359)

<div class="topic-metadata">

**Author:** [@m.zendedel75](https://discourse.nodered.org/u/m.zendedel75)\
**Replies:** 11\
**Last updated:** [23 November 2020 12:12 UTC](https://discourse.nodered.org/t/problem-with-this-nodes/36359 "2020-11-23T12:12:01Z")

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Hi guys, I problem with install heart-rate and LoRa node in node red. when click on install, show failed install and in log show that 'for each' Error. any body install this nodes successfully...? Thanks.

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## [Send WOL over second Interface](https://discourse.nodered.org/t/send-wol-over-second-interface/36383)

<div class="topic-metadata">

**Author:** [@corin.corvus](https://discourse.nodered.org/u/corin.corvus)\
**Replies:** 9\
**Last updated:** [23 November 2020 11:13 UTC](https://discourse.nodered.org/t/send-wol-over-second-interface/36383 "2020-11-23T11:13:02Z")

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Hi, i recreated my Network at Home. So i have 3 Subnets now. WOL dont work over subnets. So i have add a new network Interface to my Smarthome Node-Red Server with a Networkadress in my Client Network. Smart Home 10.2…

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## [Only one active Kafka Consumer at a time limitation](https://discourse.nodered.org/t/only-one-active-kafka-consumer-at-a-time-limitation/36381)

<div class="topic-metadata">

**Author:** [@gauravdasgupta](https://discourse.nodered.org/u/gauravdasgupta)\
**Replies:** 1\
**Last updated:** [23 November 2020 08:52 UTC](https://discourse.nodered.org/t/only-one-active-kafka-consumer-at-a-time-limitation/36381 "2020-11-23T08:52:20Z")

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Hello, Recently working on some Kafka integrations with Node-RED flows and found out that if I am having N number of flows, all of which are using kafka consumer node, it's not possible to connect and use all of them in…

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## [Generate a Dashboard Screenshot / Report](https://discourse.nodered.org/t/generate-a-dashboard-screenshot-report/3125)

<div class="topic-metadata">

**Author:** [@zacharyalan09](https://discourse.nodered.org/u/zacharyalan09)\
**Replies:** 5\
**Last updated:** [23 November 2020 08:29 UTC](https://discourse.nodered.org/t/generate-a-dashboard-screenshot-report/3125 "2020-11-23T08:29:52Z")

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Hello - This is a "How would you do it?" request... I currently have an application split into three tabs. The first allows the user to input specific information about their sensor configurations. The second provides r…

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## [Run Node-Red as AWS Lambda Function](https://discourse.nodered.org/t/run-node-red-as-aws-lambda-function/36379)

<div class="topic-metadata">

**Author:** [@anguslou](https://discourse.nodered.org/u/anguslou)\
**Replies:** 1\
**Last updated:** [23 November 2020 08:18 UTC](https://discourse.nodered.org/t/run-node-red-as-aws-lambda-function/36379 "2020-11-23T08:18:36Z")

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Does anyone have an idea how to run Node-Red as AWS Lambda? Currently, I am running Node-Red on EC2 and using other AWS services such as DynamoDB and S3, thinking Lambda will be more flexible rather than EC2. Understand…

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## [Node-red won't start](https://discourse.nodered.org/t/node-red-wont-start/33762)

<div class="topic-metadata">

**Author:** [@alex88](https://discourse.nodered.org/u/alex88)\
**Replies:** 63\
**Last updated:** [23 November 2020 00:11 UTC](https://discourse.nodered.org/t/node-red-wont-start/33762 "2020-11-23T00:11:29Z")

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It may be unrelated, but Windows installed some updates and rebooted my PC last night. When I logged in this morning Node-RED would not start. I keep getting the following error: I have deleted the file in question a…

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## [Working with local storage for Context, Flow and Global Variables](https://discourse.nodered.org/t/working-with-local-storage-for-context-flow-and-global-variables/36320)

<div class="topic-metadata">

**Author:** [@alex88](https://discourse.nodered.org/u/alex88)\
**Replies:** 5\
**Last updated:** [22 November 2020 22:51 UTC](https://discourse.nodered.org/t/working-with-local-storage-for-context-flow-and-global-variables/36320 "2020-11-22T22:51:04Z")

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I am moving a discussion from this thread: To this new one, as through some help it has become apparent that the topic has moved from being about Node-RED not starting, to working with storing data locally, and I hope …

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## [If/else for efficiency formula](https://discourse.nodered.org/t/if-else-for-efficiency-formula/36323)

<div class="topic-metadata">

**Author:** [@Becker](https://discourse.nodered.org/u/Becker)\
**Replies:** 13\
**Last updated:** [22 November 2020 20:20 UTC](https://discourse.nodered.org/t/if-else-for-efficiency-formula/36323 "2020-11-22T20:20:18Z")

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Hi, I need to switch the values BattP \<-\> PAC3 for (dis)charging my battery: var temp = ((msg.payload\["BattP"\] / msg.payload\["PAC3"\]) \* 100 ); var temp2 = parseFloat(temp.toFixed(0)); msg.payload = temp2; msg.topic = …

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## [Installation on a pi-0-w confusion](https://discourse.nodered.org/t/installation-on-a-pi-0-w-confusion/36355)

<div class="topic-metadata">

**Author:** [@fil](https://discourse.nodered.org/u/fil)\
**Replies:** 1\
**Last updated:** [22 November 2020 20:05 UTC](https://discourse.nodered.org/t/installation-on-a-pi-0-w-confusion/36355 "2020-11-22T20:05:55Z")

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I am installing onto a pi-0-w using the script provided on the Pi installation Page. This page also mentions that due to limited memory on some models, its best to start using the node-red-pi --max-old-space-size=256 c…

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## [Ghost messages send by the Telegram node](https://discourse.nodered.org/t/ghost-messages-send-by-the-telegram-node/36353)

<div class="topic-metadata">

**Author:** [@mintgroen](https://discourse.nodered.org/u/mintgroen)\
**Replies:** 0\
**Last updated:** [22 November 2020 19:06 UTC](https://discourse.nodered.org/t/ghost-messages-send-by-the-telegram-node/36353 "2020-11-22T19:06:01Z")

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I have a flow where I monitor the ONLINE status of a device, I would like to be informed of the occasion that the thermostat is OFFLINE and act upon that status in another flow NR receives a JSON from the google API, th…

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## [A question about "Simpletime"](https://discourse.nodered.org/t/a-question-about-simpletime/36328)

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**Author:** [@DillonW](https://discourse.nodered.org/u/DillonW)\
**Replies:** 8\
**Last updated:** [22 November 2020 18:36 UTC](https://discourse.nodered.org/t/a-question-about-simpletime/36328 "2020-11-22T18:36:55Z")

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Hi, last year I used the "Simpletime" node. I remember using the following code: if(msg.mymonthn\>=4||(msg.mymonthn\<=10&&msg.mydom\<27)){//adjust based on Daylight savings time msg.myhour+=1; } else{ msg.myhour-=…

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## [Problem after updating Raspbian Stretch to Buster](https://discourse.nodered.org/t/problem-after-updating-raspbian-stretch-to-buster/36278)

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**Author:** [@SuperNinja](https://discourse.nodered.org/u/SuperNinja)\
**Replies:** 18\
**Last updated:** [22 November 2020 15:13 UTC](https://discourse.nodered.org/t/problem-after-updating-raspbian-stretch-to-buster/36278 "2020-11-22T15:13:43Z")

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@dceejay @wb666greene @krambriw I updated my RPI 3B with this tutorial : Stretch to Buster Raspbian The problem is, I can't access Node Red anymore. It seems that the update did not work well. Secund problem i'm no…

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## [How to make an AND gate graphically](https://discourse.nodered.org/t/how-to-make-an-and-gate-graphically/36315)

<div class="topic-metadata">

**Author:** [@hdehaseleer](https://discourse.nodered.org/u/hdehaseleer)\
**Replies:** 11\
**Last updated:** [22 November 2020 14:09 UTC](https://discourse.nodered.org/t/how-to-make-an-and-gate-graphically/36315 "2020-11-22T14:09:46Z")

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I'm very new with Home Assistant and Node-Red. I'm searching how to make an AND gate with the graphical representation. I want to make: if "we are at home" AND "we are not sleeping" AND "it's dark" then "turn all lig…

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## [Auto import and deploy flow](https://discourse.nodered.org/t/auto-import-and-deploy-flow/36300)

<div class="topic-metadata">

**Author:** [@Jotarod](https://discourse.nodered.org/u/Jotarod)\
**Replies:** 2\
**Last updated:** [22 November 2020 13:53 UTC](https://discourse.nodered.org/t/auto-import-and-deploy-flow/36300 "2020-11-22T13:53:55Z")

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Dear all, I have being reading some other post but I cant find something helpfull for me. I have a PC with ubuntu and node red working on a company and I cant have access by VPN or similar cause they have lot of restr…

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## [RPI Modbus TCP eBox-TCP-02 EPEVER connected, but no data](https://discourse.nodered.org/t/rpi-modbus-tcp-ebox-tcp-02-epever-connected-but-no-data/36331)

<div class="topic-metadata">

**Author:** [@Mario1968](https://discourse.nodered.org/u/Mario1968)\
**Replies:** 0\
**Last updated:** [22 November 2020 13:33 UTC](https://discourse.nodered.org/t/rpi-modbus-tcp-ebox-tcp-02-epever-connected-but-no-data/36331 "2020-11-22T13:33:00Z")

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Its only connected but i got no data. Raspberry Node-Red V1.2.5 Network OK connected Modbus to Ethernet converter similar to USR Serial Device Server Modbus Failure On State sending Get More About It By Logging Tran…

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## [Problem using two Azure Save Blob nodes in the same flow](https://discourse.nodered.org/t/problem-using-two-azure-save-blob-nodes-in-the-same-flow/10495)

<div class="topic-metadata">

**Author:** [@xoani](https://discourse.nodered.org/u/xoani)\
**Replies:** 2\
**Last updated:** [22 November 2020 13:11 UTC](https://discourse.nodered.org/t/problem-using-two-azure-save-blob-nodes-in-the-same-flow/10495 "2020-11-22T13:11:08Z")

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Hello. I am uploading sensor data every 10 seconds to the Azure Blob Storage with the Azure Save Blob Node. When I use it in a simple flow it works, but when I have two Azure Save Blob nodes in the same flow, there is a …

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## [Sqlite - size limit / how to limit database size (fifo)](https://discourse.nodered.org/t/sqlite-size-limit-how-to-limit-database-size-fifo/36311)

<div class="topic-metadata">

**Author:** [@bmoel](https://discourse.nodered.org/u/bmoel)\
**Replies:** 2\
**Last updated:** [22 November 2020 10:30 UTC](https://discourse.nodered.org/t/sqlite-size-limit-how-to-limit-database-size-fifo/36311 "2020-11-22T10:30:50Z")

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I read in a tutorial that the sqlite node is limited to 4MB. But I could not find any confirmation on this in the description and it might have changed. In the tutorial the data was stored on a service called FRED and I…

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## [How to create folder dynamically on Azure Blob Container?](https://discourse.nodered.org/t/how-to-create-folder-dynamically-on-azure-blob-container/36316)

<div class="topic-metadata">

**Author:** [@sathishkumarc14](https://discourse.nodered.org/u/sathishkumarc14)\
**Replies:** 0\
**Last updated:** [22 November 2020 10:12 UTC](https://discourse.nodered.org/t/how-to-create-folder-dynamically-on-azure-blob-container/36316 "2020-11-22T10:12:05Z")

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I need to create dynamic folders on Azure Blob Container with Node RED. Is this possible? Can I able to achieve this with Node RED?

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## [How to upload files to azure blob container folders](https://discourse.nodered.org/t/how-to-upload-files-to-azure-blob-container-folders/36313)

<div class="topic-metadata">

**Author:** [@sathishkumarc14](https://discourse.nodered.org/u/sathishkumarc14)\
**Replies:** 0\
**Last updated:** [22 November 2020 09:41 UTC](https://discourse.nodered.org/t/how-to-upload-files-to-azure-blob-container-folders/36313 "2020-11-22T09:41:22Z")

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My use case is to upload files to Azure Blob container. My azure blob container having a folder "Images". I need to upload my files into the folder "Images" in blob container. Using \[https://flows.nodered.org/node/node…

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## [Anyone got "ESP8266 OTA Firmware Upgrade Manager" working?](https://discourse.nodered.org/t/anyone-got-esp8266-ota-firmware-upgrade-manager-working/35858)

<div class="topic-metadata">

**Author:** [@samiul-hoque](https://discourse.nodered.org/u/samiul-hoque)\
**Replies:** 3\
**Last updated:** [22 November 2020 09:00 UTC](https://discourse.nodered.org/t/anyone-got-esp8266-ota-firmware-upgrade-manager-working/35858 "2020-11-22T09:00:07Z")

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Greetings, I have imported this flow ESP8266 OTA Firmware Upgrade Manager but the web ui is not loading. Did anyone get this working?

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## [Node-red TCA9548A interface](https://discourse.nodered.org/t/node-red-tca9548a-interface/36309)

<div class="topic-metadata">

**Author:** [@QIoT](https://discourse.nodered.org/u/QIoT)\
**Replies:** 0\
**Last updated:** [22 November 2020 07:44 UTC](https://discourse.nodered.org/t/node-red-tca9548a-interface/36309 "2020-11-22T07:44:56Z")

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Hi guys, I need to connect multiple I2C devices with the same address but only one bus available. So TCA9548A is the chip to use. But I cannot find TCA9548A interface with node-red. Is there some way node-red can suppo…

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