# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1327

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

**Page:** 1328

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## [Storing an index by a counter](https://discourse.nodered.org/t/storing-an-index-by-a-counter/6808)

<div class="topic-metadata">

**Author:** [@fabien](https://discourse.nodered.org/u/fabien)\
**Replies:** 1\
**Last updated:** [14 January 2019 22:16 UTC](https://discourse.nodered.org/t/storing-an-index-by-a-counter/6808 "2019-01-14T22:16:46Z")

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hello, I will need help, the goal of the program is to store a counter index to prevent each node red start or redeploy, indexe starts to zero. I tried several solutions without success the storage keeps the value …

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## [Node-red-contrib-dsm question](https://discourse.nodered.org/t/node-red-contrib-dsm-question/6585)

<div class="topic-metadata">

**Author:** [@jupiter8](https://discourse.nodered.org/u/jupiter8)\
**Replies:** 7\
**Last updated:** [14 January 2019 16:51 UTC](https://discourse.nodered.org/t/node-red-contrib-dsm-question/6585 "2019-01-14T16:51:06Z")

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This is an awsome node, i'm really enjoying the contex storage example to monitor some real world machine running time . But pushing things a little bit further i'd like to modify the rising edge counter to be persisent …

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## [Node red Azure IOT Hub Registry](https://discourse.nodered.org/t/node-red-azure-iot-hub-registry/6799)

<div class="topic-metadata">

**Author:** [@ers](https://discourse.nodered.org/u/ers)\
**Replies:** 0\
**Last updated:** [14 January 2019 15:58 UTC](https://discourse.nodered.org/t/node-red-azure-iot-hub-registry/6799 "2019-01-14T15:58:52Z")

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When I try to register my device to Azure IOT Hub using the 'Azure IOT Hub Registry' Block, I get the following error message: Error while trying to create a new device: UnauthorizedError: Unauthorized My inject node h…

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## [Gas smoke sensor MAX6675, pressure sensor, arduino and raspberry pi](https://discourse.nodered.org/t/gas-smoke-sensor-max6675-pressure-sensor-arduino-and-raspberry-pi/6540)

<div class="topic-metadata">

**Author:** [@ole88](https://discourse.nodered.org/u/ole88)\
**Replies:** 13\
**Last updated:** [14 January 2019 14:56 UTC](https://discourse.nodered.org/t/gas-smoke-sensor-max6675-pressure-sensor-arduino-and-raspberry-pi/6540 "2019-01-14T14:56:01Z")

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Hi. At home we have wood heating system. I wish to display the smoke gas temperature on my node-red dashboard in form of a gauge. I want it connected to my raspberry pi. I have a smoke gas sensor called MAX6675 who wor…

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## [Http request from a local node-red machine](https://discourse.nodered.org/t/http-request-from-a-local-node-red-machine/6776)

<div class="topic-metadata">

**Author:** [@ALOKA1432](https://discourse.nodered.org/u/ALOKA1432)\
**Replies:** 13\
**Last updated:** [14 January 2019 09:54 UTC](https://discourse.nodered.org/t/http-request-from-a-local-node-red-machine/6776 "2019-01-14T09:54:06Z")

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How can one allow the cloud hosted Node-RED web server to be accessible through http in in a local Node-RED machine?

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## [View of the Dashboard](https://discourse.nodered.org/t/view-of-the-dashboard/6782)

<div class="topic-metadata">

**Author:** [@Georg25](https://discourse.nodered.org/u/Georg25)\
**Replies:** 2\
**Last updated:** [14 January 2019 09:35 UTC](https://discourse.nodered.org/t/view-of-the-dashboard/6782 "2019-01-14T09:35:58Z")

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Is there a way I can see when a new device accesses the Node-RED Dashboard? The problem is, when I am with my laptop on the dashboard and then access even with the tablet or smartphone on it, the view no longer fits. S…

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## [Raspbian node-red stop job is running](https://discourse.nodered.org/t/raspbian-node-red-stop-job-is-running/6749)

<div class="topic-metadata">

**Author:** [@wb666greene](https://discourse.nodered.org/u/wb666greene)\
**Replies:** 4\
**Last updated:** [14 January 2019 02:01 UTC](https://discourse.nodered.org/t/raspbian-node-red-stop-job-is-running/6749 "2019-01-14T02:01:35Z")

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Having weird issues, while troubleshooting I'm rebooting/shutting down the pi a lot and I notice it "hangs" for almost 2 minutes with this "A stop job is running for node-red graphical event wiring tool" and some kind of…

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## [Tcp out is eating some of my messages](https://discourse.nodered.org/t/tcp-out-is-eating-some-of-my-messages/6603)

<div class="topic-metadata">

**Author:** [@superace](https://discourse.nodered.org/u/superace)\
**Replies:** 8\
**Last updated:** [14 January 2019 00:30 UTC](https://discourse.nodered.org/t/tcp-out-is-eating-some-of-my-messages/6603 "2019-01-14T00:30:19Z")

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Hi I probably facing something really simple but I just can't get a grip on it. Let me first explain what is working: I can use 'Injection' to send a string of 17 Ascii characters to a 'TCP out' node. They arrive "on …

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## [Question : function node](https://discourse.nodered.org/t/question-function-node/6763)

<div class="topic-metadata">

**Author:** [@MPopti0n](https://discourse.nodered.org/u/MPopti0n)\
**Replies:** 2\
**Last updated:** [13 January 2019 22:29 UTC](https://discourse.nodered.org/t/question-function-node/6763 "2019-01-13T22:29:29Z")

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Hi, it maybe is a dumb question but here goes! My function node is reciving a message like this : { "\_msgid":"fd517150.49f97", "topic":"", "payload":"Blablabla", "Appareil":"G102\_G008\_L308" } On the other side of th…

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## [Node-red influxdb json insert](https://discourse.nodered.org/t/node-red-influxdb-json-insert/6718)

<div class="topic-metadata">

**Author:** [@turkdoktoru](https://discourse.nodered.org/u/turkdoktoru)\
**Replies:** 27\
**Last updated:** [13 January 2019 21:47 UTC](https://discourse.nodered.org/t/node-red-influxdb-json-insert/6718 "2019-01-13T21:47:28Z")

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Hello friends, I'm sending a json line as follows. mqtt broker takes this line and translates as json. Then I want to save the line that I translated into influxdb but don't save it? Json string: { "nodename": "cihaz1…

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## [Read and write a json file - solved](https://discourse.nodered.org/t/read-and-write-a-json-file-solved/6725)

<div class="topic-metadata">

**Author:** [@Florian75](https://discourse.nodered.org/u/Florian75)\
**Replies:** 9\
**Last updated:** [13 January 2019 19:47 UTC](https://discourse.nodered.org/t/read-and-write-a-json-file-solved/6725 "2019-01-13T19:47:21Z")

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Hello all, I have the following problem: a reed-sensor is connected to the oil valve of my central heating. So i can receive via MQTT a "1", for oil burner is on and a "0", for oil burner is off. Now i would like to op…

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## [Wrong state change](https://discourse.nodered.org/t/wrong-state-change/6741)

<div class="topic-metadata">

**Author:** [@GridexX](https://discourse.nodered.org/u/GridexX)\
**Replies:** 8\
**Last updated:** [13 January 2019 19:19 UTC](https://discourse.nodered.org/t/wrong-state-change/6741 "2019-01-13T19:19:13Z")

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Hello Everybody :smile: ! I'm a new user of node-red and I need some help about a project :slight\_smile: I try to make my Connected Lamp Xiaomi yeelight reacting to an incoming notification on my android phone. I hav…

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## [Presence monitoring using Bluetooth](https://discourse.nodered.org/t/presence-monitoring-using-bluetooth/5369)

<div class="topic-metadata">

**Author:** [@krambriw](https://discourse.nodered.org/u/krambriw)\
**Replies:** 1\
**Last updated:** [13 January 2019 17:45 UTC](https://discourse.nodered.org/t/presence-monitoring-using-bluetooth/5369 "2019-01-13T17:45:39Z")

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After a longer evaluation period, I felt I’m convinced sharing my setup. It will eventually help others looking for a reliable solution for presence detection using the plain Bluetooth available in most modern mobile dev…

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## [Wake screen via node-red](https://discourse.nodered.org/t/wake-screen-via-node-red/6730)

<div class="topic-metadata">

**Author:** [@TurboTronix](https://discourse.nodered.org/u/TurboTronix)\
**Replies:** 4\
**Last updated:** [13 January 2019 16:36 UTC](https://discourse.nodered.org/t/wake-screen-via-node-red/6730 "2019-01-13T16:36:37Z")

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I'm using a usb RFID to send tag numbers to a webhosted MySQL via node-red. Now I want to create a dashboard to show the results back onto my Pi. Is there a way to wake my Pi monitor when I scan a card via RFID?

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## [Solar Tracker to control linear actuator](https://discourse.nodered.org/t/solar-tracker-to-control-linear-actuator/6407)

<div class="topic-metadata">

**Author:** [@Cormad](https://discourse.nodered.org/u/Cormad)\
**Replies:** 19\
**Last updated:** [13 January 2019 15:35 UTC](https://discourse.nodered.org/t/solar-tracker-to-control-linear-actuator/6407 "2019-01-13T15:35:18Z")

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Hey all, I need a bit of input to help my brother with a project. Is it even possible and is Node-Red the best solution ? We want control a linear actuator to move a solar array through out the day. The actuator is con…

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## [Installing Node Red on freenas](https://discourse.nodered.org/t/installing-node-red-on-freenas/6706)

<div class="topic-metadata">

**Author:** [@Dayve](https://discourse.nodered.org/u/Dayve)\
**Replies:** 11\
**Last updated:** [12 January 2019 15:29 UTC](https://discourse.nodered.org/t/installing-node-red-on-freenas/6706 "2019-01-12T15:29:47Z")

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I have Node Red running on one server and would like to move everything over to my FreeNAS. Node Red is installed and working on the new server but I can not install nodes or update any. I get a error like: Failed to u…

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## [I see no difference in authentication](https://discourse.nodered.org/t/i-see-no-difference-in-authentication/6710)

<div class="topic-metadata">

**Author:** [@elpiedras](https://discourse.nodered.org/u/elpiedras)\
**Replies:** 3\
**Last updated:** [12 January 2019 14:47 UTC](https://discourse.nodered.org/t/i-see-no-difference-in-authentication/6710 "2019-01-12T14:47:30Z")

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I'm running node-red in a RPI3 and I have followed the https://nodered.org/docs/security#generating-the-password-hash tutorial, modified the setting.js file and still, I see no difference when accessing the website. I'm …

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## [Ngrok tunnels from Node-Red](https://discourse.nodered.org/t/ngrok-tunnels-from-node-red/6714)

<div class="topic-metadata">

**Author:** [@sammachin](https://discourse.nodered.org/u/sammachin)\
**Replies:** 0\
**Last updated:** [12 January 2019 10:04 UTC](https://discourse.nodered.org/t/ngrok-tunnels-from-node-red/6714 "2019-01-12T10:04:55Z")

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Published my first node last night, its a wrapper for setting up and managing ngrok tunnels direct from node-red.

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## [Node-red influxdb insert-update](https://discourse.nodered.org/t/node-red-influxdb-insert-update/6699)

<div class="topic-metadata">

**Author:** [@turkdoktoru](https://discourse.nodered.org/u/turkdoktoru)\
**Replies:** 10\
**Last updated:** [12 January 2019 09:41 UTC](https://discourse.nodered.org/t/node-red-influxdb-insert-update/6699 "2019-01-12T09:41:32Z")

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I am sending data to the Node-Red server with the mqtt.fx program as attached. The Mqtt server is taking it. How to register and update the received data in influxdb. can you help me ?

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## [New node property and validation](https://discourse.nodered.org/t/new-node-property-and-validation/6673)

<div class="topic-metadata">

**Author:** [@Onixarts](https://discourse.nodered.org/u/Onixarts)\
**Replies:** 9\
**Last updated:** [11 January 2019 22:42 UTC](https://discourse.nodered.org/t/new-node-property-and-validation/6673 "2019-01-11T22:42:38Z")

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Hi, What is the right way to add new property to configuration node (in case node exists in production systems)? I've put my new property in defaults section, for example like this below: reconnectPeriod: {value: 1000,…

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## [How to store data in JSON file in Node-RED](https://discourse.nodered.org/t/how-to-store-data-in-json-file-in-node-red/6480)

<div class="topic-metadata">

**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 22\
**Last updated:** [11 January 2019 22:26 UTC](https://discourse.nodered.org/t/how-to-store-data-in-json-file-in-node-red/6480 "2019-01-11T22:26:42Z")

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Hi, this is quite a "beginner's" question but hopefully someone can help? I want to build up a "definitions" file that describes the properties for various custom DIY home automation devices. I'm thinking the best way …

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## [Display HTML inside flow](https://discourse.nodered.org/t/display-html-inside-flow/6586)

<div class="topic-metadata">

**Author:** [@mvidhya86](https://discourse.nodered.org/u/mvidhya86)\
**Replies:** 3\
**Last updated:** [11 January 2019 21:42 UTC](https://discourse.nodered.org/t/display-html-inside-flow/6586 "2019-01-11T21:42:33Z")

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Hello, I'm trying to preview/display html file, is there an option to display this within flow something like a preview or a popup window in which we can show the html file contents. Please help

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## [node red dynamic topic](https://discourse.nodered.org/t/node-red-dynamic-topic/6632)

<div class="topic-metadata">

**Author:** [@turkdoktoru](https://discourse.nodered.org/u/turkdoktoru)\
**Replies:** 3\
**Last updated:** [11 January 2019 21:09 UTC](https://discourse.nodered.org/t/node-red-dynamic-topic/6632 "2019-01-11T21:09:51Z")

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Hello, I have 100,000 arduino devices. I will connect them all to the node-red network with mqtt. But I don't want to add them all one by one. How can I add a mqtt entry and dynamically provide it?

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## [TCP node and WebSocket node](https://discourse.nodered.org/t/tcp-node-and-websocket-node/6683)

<div class="topic-metadata">

**Author:** [@RahulMathavan](https://discourse.nodered.org/u/RahulMathavan)\
**Replies:** 2\
**Last updated:** [11 January 2019 20:29 UTC](https://discourse.nodered.org/t/tcp-node-and-websocket-node/6683 "2019-01-11T20:29:04Z")

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I could not able to get a clear understanding of TCP nodes and WebSocket node. where and why it is used

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## [How to use the contrib-npm](https://discourse.nodered.org/t/how-to-use-the-contrib-npm/6701)

<div class="topic-metadata">

**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 3\
**Last updated:** [11 January 2019 20:23 UTC](https://discourse.nodered.org/t/how-to-use-the-contrib-npm/6701 "2019-01-11T20:23:21Z")

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I have a Yale smart alarm system (UK), and found this Yale Alarm System Node.js API Wrapper, which is a Node.js module. How can I get this to work in Node-RED? Here's what I tried so far. I found node-red-contrib-npm w…

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## [Display on mobile devices](https://discourse.nodered.org/t/display-on-mobile-devices/6687)

<div class="topic-metadata">

**Author:** [@Tobi](https://discourse.nodered.org/u/Tobi)\
**Replies:** 1\
**Last updated:** [11 January 2019 17:05 UTC](https://discourse.nodered.org/t/display-on-mobile-devices/6687 "2019-01-11T17:05:06Z")

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I want to use the Node-RED Dashboard on a Samsung Tablet. I use Chrome and the "Samsung Internet Browser" on the tablet. However, I do not see any PDF files on my tablet, but I do have it on my laptop. Likewise, the incl…

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## [Adding npm module and using it](https://discourse.nodered.org/t/adding-npm-module-and-using-it/6655)

<div class="topic-metadata">

**Author:** [@alanca](https://discourse.nodered.org/u/alanca)\
**Replies:** 5\
**Last updated:** [11 January 2019 16:39 UTC](https://discourse.nodered.org/t/adding-npm-module-and-using-it/6655 "2019-01-11T16:39:42Z")

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I want to use the atob function to convert base64 to hex. After googling a little bit I found out that npm modules can be added manually. I did npm i atob in the npm directory, as well as the node-red directory: usr/li…

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## [Custom storage module: credentials not being restored](https://discourse.nodered.org/t/custom-storage-module-credentials-not-being-restored/6700)

<div class="topic-metadata">

**Author:** [@BGoll](https://discourse.nodered.org/u/BGoll)\
**Replies:** 0\
**Last updated:** [11 January 2019 14:54 UTC](https://discourse.nodered.org/t/custom-storage-module-credentials-not-being-restored/6700 "2019-01-11T14:54:09Z")

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Hey there, my team develops/modifies a custom storage module which uses MongoDB to store the Node-RED runtime data. The reason for this is that we deploy Node-RED to Cloud Foundry which leads to a lost state if Node-RED…

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## [Repeat node not working correctly](https://discourse.nodered.org/t/repeat-node-not-working-correctly/6696)

<div class="topic-metadata">

**Author:** [@IvarMvl](https://discourse.nodered.org/u/IvarMvl)\
**Replies:** 8\
**Last updated:** [11 January 2019 13:44 UTC](https://discourse.nodered.org/t/repeat-node-not-working-correctly/6696 "2019-01-11T13:44:04Z")

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repeat node not working correctly doesnt awitch to ELSE output after message passed 3 times . . the node:. my code: \[{"id":"cda5a735.9bf3a8","type":"delay","z":"e4d8382f.f4813","name":"","pauseType":"delay","tim…

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## [Error No url specified](https://discourse.nodered.org/t/error-no-url-specified/6692)

<div class="topic-metadata">

**Author:** [@Sudha](https://discourse.nodered.org/u/Sudha)\
**Replies:** 2\
**Last updated:** [11 January 2019 12:48 UTC](https://discourse.nodered.org/t/error-no-url-specified/6692 "2019-01-11T12:48:02Z")

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Hello Everyone, I am working on a project on the cloud. I am facing the error of No url specified. Here is the screenshot. I also have trouble in charts and gauge which is not working. It will be really great you anyone…

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