# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=853

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

**Page:** 854

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## [Conceptual question: single or multiple mqtt input/output](https://discourse.nodered.org/t/conceptual-question-single-or-multiple-mqtt-input-output/14734)

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**Author:** [@insomniux](https://discourse.nodered.org/u/insomniux)\
**Replies:** 6\
**Last updated:** [29 August 2019 08:36 UTC](https://discourse.nodered.org/t/conceptual-question-single-or-multiple-mqtt-input-output/14734 "2019-08-29T08:36:06Z")

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Being rather new in the field of node-red I have a conceptual question. Lets say I have 3 lights I want to switch, for each light I define a switch. The switch has an MQTT input (for status update) and an MQTT output to…

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## [Arduindo Firmata Digital Pin Sensor Payload](https://discourse.nodered.org/t/arduindo-firmata-digital-pin-sensor-payload/5599)

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**Author:** [@SeanT](https://discourse.nodered.org/u/SeanT)\
**Replies:** 2\
**Last updated:** [29 August 2019 06:15 UTC](https://discourse.nodered.org/t/arduindo-firmata-digital-pin-sensor-payload/5599 "2019-08-29T06:15:40Z")

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I fairly new at this. I am using an Arduino Uno, running 2 sensors: 1 analogue (soil moisture) and 1 digital (temperature). When running the Arduino IDE with self written sketch, the console results are fine, i.e. I ge…

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## [AWS beanstalk - Lost connection to server](https://discourse.nodered.org/t/aws-beanstalk-lost-connection-to-server/3313)

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**Author:** [@martin1](https://discourse.nodered.org/u/martin1)\
**Replies:** 3\
**Last updated:** [29 August 2019 03:16 UTC](https://discourse.nodered.org/t/aws-beanstalk-lost-connection-to-server/3313 "2019-08-29T03:16:21Z")

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Hi I have deployed node-red on amazon Elastic Beanstalk using the tutorialand it works like a charm. However I have one issue in the admin that keeps showing "Lost connection to server..." and keeps on trying to reconne…

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## [Using a lookup to give volume result](https://discourse.nodered.org/t/using-a-lookup-to-give-volume-result/14841)

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**Author:** [@Andysev](https://discourse.nodered.org/u/Andysev)\
**Replies:** 2\
**Last updated:** [28 August 2019 22:10 UTC](https://discourse.nodered.org/t/using-a-lookup-to-give-volume-result/14841 "2019-08-28T22:10:59Z")

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Hi Everyone, first time poster, so hopefully I get this correct. I'm receiving a measurement from an ultrasonic sensor or a pressure Transducer. This level will indicate the height of liquid in a vessel. I have formul…

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## [Node-red bash curl script install fails on Coral Dev board](https://discourse.nodered.org/t/node-red-bash-curl-script-install-fails-on-coral-dev-board/14769)

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**Author:** [@wb666greene](https://discourse.nodered.org/u/wb666greene)\
**Replies:** 14\
**Last updated:** [28 August 2019 21:48 UTC](https://discourse.nodered.org/t/node-red-bash-curl-script-install-fails-on-coral-dev-board/14769 "2019-08-28T21:48:52Z")

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Google used some "weird" and apparently poorly documented "Mendel-Chef" Debian variation. I managed to get OpenCV 4.0.0 to build on it following some instructions I'd found via Google search (although trying 4.1.0 fail…

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## [TCP output node - dynamically change HOST Address](https://discourse.nodered.org/t/tcp-output-node-dynamically-change-host-address/1398)

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**Author:** [@sweetwater](https://discourse.nodered.org/u/sweetwater)\
**Replies:** 4\
**Last updated:** [28 August 2019 20:11 UTC](https://discourse.nodered.org/t/tcp-output-node-dynamically-change-host-address/1398 "2019-08-28T20:11:27Z")

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We have the Host/IP address hardcoded in as "192.168.1.74" and that works ok. However, we are looking to dynamically change the HOST/IP address via user Input. For example, we will allow User to enter tenter in the IP …

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## [Noobie Function question](https://discourse.nodered.org/t/noobie-function-question/14668)

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**Author:** [@Exit2Studios](https://discourse.nodered.org/u/Exit2Studios)\
**Replies:** 6\
**Last updated:** [28 August 2019 18:40 UTC](https://discourse.nodered.org/t/noobie-function-question/14668 "2019-08-28T18:40:54Z")

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I am not a programmer, so struggling a bit trying to figure out how to accomplish the following with a function node. I'm sure it's pretty simple stuff for a pro :slight\_smile: I'm trying to consolidate/simplify a code…

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## [Import a library by global method vs script src method](https://discourse.nodered.org/t/import-a-library-by-global-method-vs-script-src-method/14823)

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**Author:** [@Nxito](https://discourse.nodered.org/u/Nxito)\
**Replies:** 14\
**Last updated:** [28 August 2019 15:57 UTC](https://discourse.nodered.org/t/import-a-library-by-global-method-vs-script-src-method/14823 "2019-08-28T15:57:45Z")

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Why are there two ways to import libraries? : By calling with "require" in settings.js to take it to a global variable and via httpStatic to settings.js to take it to a port and call it from a template node with \<script…

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## [HTTP Request node does not obey time out settings](https://discourse.nodered.org/t/http-request-node-does-not-obey-time-out-settings/14849)

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**Author:** [@mvidhya86](https://discourse.nodered.org/u/mvidhya86)\
**Replies:** 1\
**Last updated:** [28 August 2019 12:22 UTC](https://discourse.nodered.org/t/http-request-node-does-not-obey-time-out-settings/14849 "2019-08-28T12:22:47Z")

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I use HTTP Request node configured with POST url. This request takes close to 5 mins for completion, i modified the settings file to have httpRequestTimeout: 360000, after restarting the instance, the request still fail…

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## [How to transpose data of a json file into a sql table](https://discourse.nodered.org/t/how-to-transpose-data-of-a-json-file-into-a-sql-table/14847)

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**Author:** [@stud](https://discourse.nodered.org/u/stud)\
**Replies:** 3\
**Last updated:** [28 August 2019 10:47 UTC](https://discourse.nodered.org/t/how-to-transpose-data-of-a-json-file-into-a-sql-table/14847 "2019-08-28T10:47:08Z")

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I'm working on a mysql database for measurements. The data of the measurements are saved as a csv file, which I managed to be converted into json. Now my problem is that I want only the last rows of the csv to be transpo…

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## [Bug/Crash nodered and alexa](https://discourse.nodered.org/t/bug-crash-nodered-and-alexa/14346)

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**Author:** [@seymour](https://discourse.nodered.org/u/seymour)\
**Replies:** 3\
**Last updated:** [28 August 2019 10:40 UTC](https://discourse.nodered.org/t/bug-crash-nodered-and-alexa/14346 "2019-08-28T10:40:35Z")

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Hi there I’ve been using node-red (now at 0.20.7) in a raspberry pi 3 and 4 with node-red-contrib-alexa-home-skill, node-red-contrib-mdashboard and node-red-contrib-knx-easy with 40 nodes to integrate my knx net with al…

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## [Parsing sensors from Tasmota to InfluxDB](https://discourse.nodered.org/t/parsing-sensors-from-tasmota-to-influxdb/14848)

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**Author:** [@igrowing](https://discourse.nodered.org/u/igrowing)\
**Replies:** 0\
**Last updated:** [28 August 2019 07:59 UTC](https://discourse.nodered.org/t/parsing-sensors-from-tasmota-to-influxdb/14848 "2019-08-28T07:59:41Z")

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Tasmota is more popular than Espurna, ESPHome, and Homie. However, it doesn't update InfluxDB. I hoped to find ready code or method... Seems I searched bad. var GAS\_WORST\_VALID = 50; // kOhm. Empirical... maybe wrong va…

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## [Setting Authorization Headers in IBM API Connect Test and Monitor](https://discourse.nodered.org/t/setting-authorization-headers-in-ibm-api-connect-test-and-monitor/14846)

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**Author:** [@priyankamakke](https://discourse.nodered.org/u/priyankamakke)\
**Replies:** 1\
**Last updated:** [28 August 2019 08:15 UTC](https://discourse.nodered.org/t/setting-authorization-headers-in-ibm-api-connect-test-and-monitor/14846 "2019-08-28T08:15:03Z")

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It's probably me being a doofus, but I'm struggling to find a way to add an Authorization header to my request using IBM API Connect Test and Monitor. In cURL I would use something like this: - -H 'Authorization: Beare…

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## [Dashboard back to main page button](https://discourse.nodered.org/t/dashboard-back-to-main-page-button/13452)

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**Author:** [@Poodlepapa](https://discourse.nodered.org/u/Poodlepapa)\
**Replies:** 6\
**Last updated:** [27 August 2019 23:28 UTC](https://discourse.nodered.org/t/dashboard-back-to-main-page-button/13452 "2019-08-27T23:28:46Z")

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Is there an easy way to switch from the dashboard to the screen where you build the flows? I have saved the dashboard URLs to my favorites bar but I'd like to be able to click something like the dashboard button to get b…

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## [How display dates of current week !?](https://discourse.nodered.org/t/how-display-dates-of-current-week/14837)

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**Author:** [@hathemi](https://discourse.nodered.org/u/hathemi)\
**Replies:** 3\
**Last updated:** [27 August 2019 22:02 UTC](https://discourse.nodered.org/t/how-display-dates-of-current-week/14837 "2019-08-27T22:02:12Z")

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i'am kind of stuck here, How can be able to display dates of current week ?

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## [MQTT + Calculus + Node-red Dashboard](https://discourse.nodered.org/t/mqtt-calculus-node-red-dashboard/13616)

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**Author:** [@NatanST](https://discourse.nodered.org/u/NatanST)\
**Replies:** 8\
**Last updated:** [27 August 2019 19:50 UTC](https://discourse.nodered.org/t/mqtt-calculus-node-red-dashboard/13616 "2019-08-27T19:50:06Z")

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Hello, I've been watching a lot of your tutorials lately. Unfortunately, I have a lot of doubts if what I need to do is "doable" with MQTT + Node red. I'll try to explain in a simple way: I'm using a Software from Pozy…

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## [Node-red and Raspberry pi 3](https://discourse.nodered.org/t/node-red-and-raspberry-pi-3/14825)

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**Author:** [@rwiest](https://discourse.nodered.org/u/rwiest)\
**Replies:** 1\
**Last updated:** [27 August 2019 13:45 UTC](https://discourse.nodered.org/t/node-red-and-raspberry-pi-3/14825 "2019-08-27T13:45:40Z")

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Hello, I don't know if this is the right place. I currently have a node-red application running on a Raspberry pi and would like to provide access to this application not only internally within my network but externally …

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## [Websocket message](https://discourse.nodered.org/t/websocket-message/14789)

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**Author:** [@lodv](https://discourse.nodered.org/u/lodv)\
**Replies:** 15\
**Last updated:** [27 August 2019 12:37 UTC](https://discourse.nodered.org/t/websocket-message/14789 "2019-08-27T12:37:14Z")

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Hello, What is meant by the message: Cannot have two WebSocket listeners on the same path: ws/myapp in the debug window? I have multiple MQTT out nodes. Three nodes use the same IP address (of Raspberry Pi A) and one h…

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## [Big timer node - How do I disable timer2](https://discourse.nodered.org/t/big-timer-node-how-do-i-disable-timer2/12930)

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**Author:** [@LondisDunleer](https://discourse.nodered.org/u/LondisDunleer)\
**Replies:** 14\
**Last updated:** [27 August 2019 06:39 UTC](https://discourse.nodered.org/t/big-timer-node-how-do-i-disable-timer2/12930 "2019-08-27T06:39:53Z")

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Hi, Sorry, really simple question, I just can't figure it out. On the node "Big timer", there's two timed outputs you can set. I only want one. Is there anyway to disable the second one?

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## [Node-red-contrib-viseo-google-spreadsheet : scary warnings](https://discourse.nodered.org/t/node-red-contrib-viseo-google-spreadsheet-scary-warnings/14727)

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**Author:** [@CaptClaude](https://discourse.nodered.org/u/CaptClaude)\
**Replies:** 3\
**Last updated:** [27 August 2019 04:58 UTC](https://discourse.nodered.org/t/node-red-contrib-viseo-google-spreadsheet-scary-warnings/14727 "2019-08-27T04:58:55Z")

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Running npm install node-red-contrib-viseo-google-spreadsheet Yields a bunch of scary warnings about deprecated dependencies and security warnings. Running npm audit afterwards gives me a long list of details that a…

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## [Reading String of Hex from T-zone RD05 problem](https://discourse.nodered.org/t/reading-string-of-hex-from-t-zone-rd05-problem/14679)

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**Author:** [@Bond](https://discourse.nodered.org/u/Bond)\
**Replies:** 19\
**Last updated:** [26 August 2019 23:42 UTC](https://discourse.nodered.org/t/reading-string-of-hex-from-t-zone-rd05-problem/14679 "2019-08-26T23:42:34Z")

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Firstly, I am a newbie from using Node Red, I got 4 DHT22 sensors connected wirelessly to a TZ-RD05. And the TZ-RD05 is connected to my raspberry pi 3 through a serial port. I have the data display is a string like in …

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## [Split String message](https://discourse.nodered.org/t/split-string-message/14801)

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**Author:** [@niclas.w82](https://discourse.nodered.org/u/niclas.w82)\
**Replies:** 21\
**Last updated:** [26 August 2019 21:50 UTC](https://discourse.nodered.org/t/split-string-message/14801 "2019-08-26T21:50:10Z")

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Hi. Can someone please help me how to split this string message. something like this 213444 ri1 CQ Best regards Niclas

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## [Node-RED on Azure IoT Edge on Raspberry Pi accessing GPIO](https://discourse.nodered.org/t/node-red-on-azure-iot-edge-on-raspberry-pi-accessing-gpio/14795)

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**Author:** [@kpm\_at\_hfi](https://discourse.nodered.org/u/kpm_at_hfi)\
**Replies:** 0\
**Last updated:** [26 August 2019 16:50 UTC](https://discourse.nodered.org/t/node-red-on-azure-iot-edge-on-raspberry-pi-accessing-gpio/14795 "2019-08-26T16:50:29Z")

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Anyone have any luck running https://flows.nodered.org/node/node-red-node-pi-gpiod to interact with a PI's GPIO from within an Azure IoT Edge Module? I've got pigpiod running, but the module (container) running Node-RED…

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## [Panasonic iot using raspberry pi](https://discourse.nodered.org/t/panasonic-iot-using-raspberry-pi/14760)

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**Author:** [@seamy](https://discourse.nodered.org/u/seamy)\
**Replies:** 1\
**Last updated:** [26 August 2019 13:14 UTC](https://discourse.nodered.org/t/panasonic-iot-using-raspberry-pi/14760 "2019-08-26T13:14:27Z")

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hello world, i wanna ask how to read panasonic fp-x c60r plc. I'm using raspberry pi with node red.and modbus rtu connection between pl and raspberry pi. i already install modbus in node red but i don't know how to setti…

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## [BacNet Protocol reading input from the device](https://discourse.nodered.org/t/bacnet-protocol-reading-input-from-the-device/14782)

<div class="topic-metadata">

**Author:** [@Iliyas](https://discourse.nodered.org/u/Iliyas)\
**Replies:** 0\
**Last updated:** [26 August 2019 10:33 UTC](https://discourse.nodered.org/t/bacnet-protocol-reading-input-from-the-device/14782 "2019-08-26T10:33:33Z")

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Hello again, I had got to know that the Bacnet is a wrapper in node node we have to install library for workin bacnet in node red... I have installed this library in the node, now how to configure and fetch the data I'…

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## [Creating functionalities in custom nodes](https://discourse.nodered.org/t/creating-functionalities-in-custom-nodes/14779)

<div class="topic-metadata">

**Author:** [@Sanketp](https://discourse.nodered.org/u/Sanketp)\
**Replies:** 7\
**Last updated:** [26 August 2019 08:59 UTC](https://discourse.nodered.org/t/creating-functionalities-in-custom-nodes/14779 "2019-08-26T08:59:57Z")

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As internal project I need to create custom nodes can you suggest few functionalites to create using custom node

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## [IOT Hub device provisioning with X509 Certificate](https://discourse.nodered.org/t/iot-hub-device-provisioning-with-x509-certificate/14777)

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**Author:** [@Sakti7725](https://discourse.nodered.org/u/Sakti7725)\
**Replies:** 1\
**Last updated:** [26 August 2019 06:10 UTC](https://discourse.nodered.org/t/iot-hub-device-provisioning-with-x509-certificate/14777 "2019-08-26T06:10:44Z")

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HI, I want to register and connect my Device to IOT hub through Node red app with X509 certificate. Can you guide me how to do the same. Thanks Sakti

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## [I can't install on raspberri pi b+ node red](https://discourse.nodered.org/t/i-cant-install-on-raspberri-pi-b-node-red/14766)

<div class="topic-metadata">

**Author:** [@hernan](https://discourse.nodered.org/u/hernan)\
**Replies:** 3\
**Last updated:** [25 August 2019 21:18 UTC](https://discourse.nodered.org/t/i-cant-install-on-raspberri-pi-b-node-red/14766 "2019-08-25T21:18:53Z")

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hello Everyone I try install node red on my raspberry pi B+ (arm7l) but during the install procces i have an error when the scrip try install node js. I have install the last raspberrian. Anyone have any idea what's go…

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## [Continuing from a feature request I made for a way to output debug information going INTO a node](https://discourse.nodered.org/t/continuing-from-a-feature-request-i-made-for-a-way-to-output-debug-information-going-into-a-node/14750)

<div class="topic-metadata">

**Author:** [@Alacritous](https://discourse.nodered.org/u/Alacritous)\
**Replies:** 2\
**Last updated:** [25 August 2019 19:26 UTC](https://discourse.nodered.org/t/continuing-from-a-feature-request-i-made-for-a-way-to-output-debug-information-going-into-a-node/14750 "2019-08-25T19:26:11Z")

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I've made a subflow that you can place inline with your flow that will just output the msg object or the msg.payload and can be enabled and disabled. But for the life of me, I can't get it to display its status. I've rea…

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## [How to install Node-red on Openshift using Github](https://discourse.nodered.org/t/how-to-install-node-red-on-openshift-using-github/14763)

<div class="topic-metadata">

**Author:** [@sergiogama](https://discourse.nodered.org/u/sergiogama)\
**Replies:** 4\
**Last updated:** [25 August 2019 17:00 UTC](https://discourse.nodered.org/t/how-to-install-node-red-on-openshift-using-github/14763 "2019-08-25T17:00:01Z")

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I'm facing the following issue when I try to install Node-red on Openshift using a github image: Cloning "https://github.com/node-red/node-red.git " ... Commit: afaf077aca517b1de15a2e3e95277853a0b64549 (Pass httpServer…

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