# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1066

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

**Page:** 1067

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## [Docker on Synology](https://discourse.nodered.org/t/docker-on-synology/28370)

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**Author:** [@Goofy2k](https://discourse.nodered.org/u/Goofy2k)\
**Replies:** 3\
**Last updated:** [16 June 2020 21:43 UTC](https://discourse.nodered.org/t/docker-on-synology/28370 "2020-06-16T21:43:07Z")

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Hi, I am trying to persist the user data when running NR under Docker on my Synology NAS. I want to use a host directory (Bind Mount) I followed the instructions on Github without succes. I went to the WIKI and followed …

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## [Customize the basic mqtt node](https://discourse.nodered.org/t/customize-the-basic-mqtt-node/28401)

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**Author:** [@vp2021](https://discourse.nodered.org/u/vp2021)\
**Replies:** 2\
**Last updated:** [16 June 2020 21:21 UTC](https://discourse.nodered.org/t/customize-the-basic-mqtt-node/28401 "2020-06-16T21:21:52Z")

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Hello, I want to use the basic components "MQTT IN" and "MQTT OUT" and modify them a bit in order to have other possible attributes in their properties. Where can I find their basic files (.js, .html, .json) so that I …

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## [Can't discover my locally installed created Node](https://discourse.nodered.org/t/cant-discover-my-locally-installed-created-node/28427)

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**Author:** [@karlo](https://discourse.nodered.org/u/karlo)\
**Replies:** 1\
**Last updated:** [16 June 2020 20:59 UTC](https://discourse.nodered.org/t/cant-discover-my-locally-installed-created-node/28427 "2020-06-16T20:59:26Z")

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Hey, I created a node and locally installed it in my ~/.node-red with npm install . No Error happend and I can see a link to the installed folder in node\_modules. But I can't find the node in my node palette. What is t…

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## [Searching a sea weather website](https://discourse.nodered.org/t/searching-a-sea-weather-website/28357)

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**Author:** [@Fati](https://discourse.nodered.org/u/Fati)\
**Replies:** 11\
**Last updated:** [16 June 2020 20:19 UTC](https://discourse.nodered.org/t/searching-a-sea-weather-website/28357 "2020-06-16T20:19:00Z")

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Hello! can someone help me! I search a web site of sea ​​weather(high tide periods,the heights of the swells,rainy periods) in json format. The api.openweathermap.org can't offer this type of weather

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## [Got Error 2 while trying to execute a python file in Exec node](https://discourse.nodered.org/t/got-error-2-while-trying-to-execute-a-python-file-in-exec-node/27889)

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**Author:** [@karlo](https://discourse.nodered.org/u/karlo)\
**Replies:** 2\
**Last updated:** [16 June 2020 19:16 UTC](https://discourse.nodered.org/t/got-error-2-while-trying-to-execute-a-python-file-in-exec-node/27889 "2020-06-16T19:16:51Z")

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Hello, I'm trying to execute a python file, that can be found under the absolute path. But I only get the Error: 2 How can I retrieve more error messages and what is the Problem? Thank you very much!! Node-RED|690x…

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## [Change node: change icon based of context storage](https://discourse.nodered.org/t/change-node-change-icon-based-of-context-storage/28410)

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**Author:** [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Replies:** 7\
**Last updated:** [16 June 2020 19:02 UTC](https://discourse.nodered.org/t/change-node-change-icon-based-of-context-storage/28410 "2020-06-16T19:02:40Z")

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If you have multiple context types setup in your settings.js like this: contextStorage: { memory : { module: "memory" }, default : { module: "localfilesystem" } when you go to a change node you wil…

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## [Problem sending array from function to table](https://discourse.nodered.org/t/problem-sending-array-from-function-to-table/28313)

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**Author:** [@aidan](https://discourse.nodered.org/u/aidan)\
**Replies:** 2\
**Last updated:** [16 June 2020 16:20 UTC](https://discourse.nodered.org/t/problem-sending-array-from-function-to-table/28313 "2020-06-16T16:20:42Z")

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I am sending object arrays to tables. I have to pad function node with a dummy output to get the first table to update consistently. The output line is as below. It must be a timing problem because just returning 'null…

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## [Can't Stage Changes in a Node-RED Project](https://discourse.nodered.org/t/cant-stage-changes-in-a-node-red-project/28421)

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**Author:** [@dudleyjosh](https://discourse.nodered.org/u/dudleyjosh)\
**Replies:** 2\
**Last updated:** [16 June 2020 15:56 UTC](https://discourse.nodered.org/t/cant-stage-changes-in-a-node-red-project/28421 "2020-06-16T15:56:07Z")

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I have a Raspberry Pi setup using Node-RED projects (running v1.0.6) and have committed and pushed changes to my GitHub repository in the past without issue. After making some recent updates to my flows, I went to commit…

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## [Issue with Heater node, not heating](https://discourse.nodered.org/t/issue-with-heater-node-not-heating/28409)

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**Author:** [@Keirtje](https://discourse.nodered.org/u/Keirtje)\
**Replies:** 10\
**Last updated:** [16 June 2020 15:18 UTC](https://discourse.nodered.org/t/issue-with-heater-node-not-heating/28409 "2020-06-16T15:18:39Z")

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Hi, as not all to experience with Node Red, I am having an issue with the node-red-contrib-heater-controller. All works fine, but how does it turn on my heater? The node will work just fine on my dashboard, temperatures…

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## [🎉 Node-RED 1.1.0-beta.1 released](https://discourse.nodered.org/t/node-red-1-1-0-beta-1-released/27761)

<div class="topic-metadata">

**Author:** [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Replies:** 103\
**Last updated:** [16 June 2020 14:59 UTC](https://discourse.nodered.org/t/node-red-1-1-0-beta-1-released/27761 "2020-06-16T14:59:46Z")

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We have just released the first public beta release of Node-RED 1.1.0 This beta contains all of the major features for 1.1.0. There are a small number of items still to add before the full release later this month. As …

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## [Activate a node when closing](https://discourse.nodered.org/t/activate-a-node-when-closing/28396)

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**Author:** [@Hattori](https://discourse.nodered.org/u/Hattori)\
**Replies:** 5\
**Last updated:** [16 June 2020 14:39 UTC](https://discourse.nodered.org/t/activate-a-node-when-closing/28396 "2020-06-16T14:39:32Z")

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Hello, I am new to Node-red and i am looking for a node that can be launched when the main window is closing so that i can clean up some project contents. I searched for something like this but did not find anything.

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## [\<solved\> Find an object in an array of objects](https://discourse.nodered.org/t/solved-find-an-object-in-an-array-of-objects/28384)

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**Author:** [@SteveMann](https://discourse.nodered.org/u/SteveMann)\
**Replies:** 17\
**Last updated:** [16 June 2020 14:17 UTC](https://discourse.nodered.org/t/solved-find-an-object-in-an-array-of-objects/28384 "2020-06-16T14:17:13Z")

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My goal is to detect when my phone or my wife's phone is at home or not. One way I thought of was to use the ARP node to get all of the IP and MAC addresses in my router's ARP table, then look for our phones. If there'…

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## [Exec node seems to fail, go to Rc:1](https://discourse.nodered.org/t/exec-node-seems-to-fail-go-to-rc-1/28398)

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**Author:** [@dclear](https://discourse.nodered.org/u/dclear)\
**Replies:** 4\
**Last updated:** [16 June 2020 14:10 UTC](https://discourse.nodered.org/t/exec-node-seems-to-fail-go-to-rc-1/28398 "2020-06-16T14:10:30Z")

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For no reason that I can make out my PHP exec node seems to sometimes fail and go to rc: 1 whatever that is? If I move a node and re-deploy it mostly comes back online. But just now I had to do that a couple of times bef…

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## [Secrets in subflows](https://discourse.nodered.org/t/secrets-in-subflows/28386)

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**Author:** [@mamosk](https://discourse.nodered.org/u/mamosk)\
**Replies:** 6\
**Last updated:** [16 June 2020 12:42 UTC](https://discourse.nodered.org/t/secrets-in-subflows/28386 "2020-06-16T12:42:00Z")

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Hi everyone, I think a "secret" data type for subflow environment variables would be very useful for secrets, like API keys and other stuff you want to be stored encrypted in flows\_cred.json file, like this: A defaul…

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## [Help with DHT22 and values](https://discourse.nodered.org/t/help-with-dht22-and-values/28359)

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**Author:** [@colint](https://discourse.nodered.org/u/colint)\
**Replies:** 15\
**Last updated:** [16 June 2020 12:37 UTC](https://discourse.nodered.org/t/help-with-dht22-and-values/28359 "2020-06-16T12:37:05Z")

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Hello All, I have a problem.Duhhh :slight\_smile: I want to read-out a DHT22, that works and i am getting the string with tempurature and humidity. I can filter the values in 2 seperate payloads. But.. How can i adju…

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## [Reading the output of a script](https://discourse.nodered.org/t/reading-the-output-of-a-script/25835)

<div class="topic-metadata">

**Author:** [@dclear](https://discourse.nodered.org/u/dclear)\
**Replies:** 5\
**Last updated:** [16 June 2020 12:05 UTC](https://discourse.nodered.org/t/reading-the-output-of-a-script/25835 "2020-06-16T12:05:09Z")

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Hi! :slight\_smile: So I'm successfully (to my surprise as I'm such a noob) reading the output of a PHP script and doing different things with the output depending on the content. I'm very happy. It's working. But the sc…

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## [Files missing when trying to start from a npm package!](https://discourse.nodered.org/t/files-missing-when-trying-to-start-from-a-npm-package/28392)

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**Author:** [@lizzardguki](https://discourse.nodered.org/u/lizzardguki)\
**Replies:** 14\
**Last updated:** [16 June 2020 11:30 UTC](https://discourse.nodered.org/t/files-missing-when-trying-to-start-from-a-npm-package/28392 "2020-06-16T11:30:38Z")

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I am writing a custom node for audio communication (quiet-js) and I found a quietjs-bundle (npm package), so I cloned the repo, edited dependencies version, and some minor fixes and I published it to npm too (don\`t want …

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## [Interface UiBuilder node](https://discourse.nodered.org/t/interface-uibuilder-node/28345)

<div class="topic-metadata">

**Author:** [@Michi](https://discourse.nodered.org/u/Michi)\
**Replies:** 1\
**Last updated:** [16 June 2020 10:42 UTC](https://discourse.nodered.org/t/interface-uibuilder-node/28345 "2020-06-16T10:42:51Z")

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Hi! it's my first experience with Node-RED. I'm trying to create a complex interface with uibuilder, with a very large number of data from a database to insert in a table but it is really difficult to use UiBuilder for…

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## [Html to table in node red](https://discourse.nodered.org/t/html-to-table-in-node-red/28387)

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**Author:** [@Chorum](https://discourse.nodered.org/u/Chorum)\
**Replies:** 3\
**Last updated:** [16 June 2020 10:33 UTC](https://discourse.nodered.org/t/html-to-table-in-node-red/28387 "2020-06-16T10:33:57Z")

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Hello, i would like to edit the backgroundcolor of a tablecell in a ui table node with the payload coming from a function node. It worked with an html cell and a hex colorcode payload. But with that method i dont know …

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## [Rising front raspberry](https://discourse.nodered.org/t/rising-front-raspberry/28393)

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**Author:** [@cigno](https://discourse.nodered.org/u/cigno)\
**Replies:** 6\
**Last updated:** [16 June 2020 10:05 UTC](https://discourse.nodered.org/t/rising-front-raspberry/28393 "2020-06-16T10:05:49Z")

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hi everyone, I have to detect the rising edge of an input raspberry pin to send an email. I'll explain my problem. when the raspberry button is closed, he sends me the email two or three times. I wanted to send only o…

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## [Node red random restart](https://discourse.nodered.org/t/node-red-random-restart/1755)

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**Author:** [@davidcgu](https://discourse.nodered.org/u/davidcgu)\
**Replies:** 49\
**Last updated:** [16 June 2020 09:23 UTC](https://discourse.nodered.org/t/node-red-random-restart/1755 "2020-06-16T09:23:46Z")

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Good Morning I have random restarts of node red service, do you have some idea looking at syslog what could be driving this issue? Jul 23 10:28:06 raspberrypi systemd\[1\]: Starting Daily apt download activities... Jul 2…

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## [How to use 2 NodeMCU to one node-red?](https://discourse.nodered.org/t/how-to-use-2-nodemcu-to-one-node-red/28389)

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**Author:** [@budiman098](https://discourse.nodered.org/u/budiman098)\
**Replies:** 0\
**Last updated:** [16 June 2020 07:35 UTC](https://discourse.nodered.org/t/how-to-use-2-nodemcu-to-one-node-red/28389 "2020-06-16T07:35:21Z")

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hallo, can someone help me? i want use 2 NodeMCU in one node-red, when i use one by one my nodemcu, its worked. but when i combine my nodeMCU it's not worked worked, just one cencor read. my flow like this and i make …

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## [Advice on copying data to and from a remote pi](https://discourse.nodered.org/t/advice-on-copying-data-to-and-from-a-remote-pi/28366)

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**Author:** [@Raj](https://discourse.nodered.org/u/Raj)\
**Replies:** 4\
**Last updated:** [16 June 2020 07:26 UTC](https://discourse.nodered.org/t/advice-on-copying-data-to-and-from-a-remote-pi/28366 "2020-06-16T07:26:03Z")

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Good Morning everyone. I am in the planning stage and need some advice. I have some remote raspberry's and am looking to back up one sqlite database from them every night, additionally I have two other databases I will…

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## [Not able to give SSL in azure sql node](https://discourse.nodered.org/t/not-able-to-give-ssl-in-azure-sql-node/28388)

<div class="topic-metadata">

**Author:** [@prateekrastogi](https://discourse.nodered.org/u/prateekrastogi)\
**Replies:** 0\
**Last updated:** [16 June 2020 07:08 UTC](https://discourse.nodered.org/t/not-able-to-give-ssl-in-azure-sql-node/28388 "2020-06-16T07:08:39Z")

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There is no option of giving SSL in azure sql node. I do not know how to do so ? Can someone please help me

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## [How to watch devices availability in a network](https://discourse.nodered.org/t/how-to-watch-devices-availability-in-a-network/7799)

<div class="topic-metadata">

**Author:** [@cflurin](https://discourse.nodered.org/u/cflurin)\
**Replies:** 26\
**Last updated:** [16 June 2020 00:56 UTC](https://discourse.nodered.org/t/how-to-watch-devices-availability-in-a-network/7799 "2020-06-16T00:56:20Z")

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Devices like Raspberry pi, ESP8266, camera, etc. are often used in a LAN (local area network). Using more "ip devices" rises the need to watch the connection. Here is a general solution based on the nodes node-red-node-…

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## [How to permanently delete image?](https://discourse.nodered.org/t/how-to-permanently-delete-image/28220)

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**Author:** [@JSONata](https://discourse.nodered.org/u/JSONata)\
**Replies:** 3\
**Last updated:** [15 June 2020 22:47 UTC](https://discourse.nodered.org/t/how-to-permanently-delete-image/28220 "2020-06-15T22:47:01Z")

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Hi, accidentally I wanted to paste some lines of code, but I pasted a screencopy. Although I didn't post the wrong message, the Image can still be accessed via direct link to tdiscourse-cloud-file-uploads.s3.dualstack.u…

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## [I/O switching performance on a Raspberry Pi 4](https://discourse.nodered.org/t/i-o-switching-performance-on-a-raspberry-pi-4/25486)

<div class="topic-metadata">

**Author:** [@dpnsw](https://discourse.nodered.org/u/dpnsw)\
**Replies:** 37\
**Last updated:** [15 June 2020 22:20 UTC](https://discourse.nodered.org/t/i-o-switching-performance-on-a-raspberry-pi-4/25486 "2020-06-15T22:20:19Z")

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I am trying to benchmark I/O performance on a number of embedded platforms (Arduino, Pi, Beaglebone). Currently Node-RED on the Pi 4 is giving me very low numbers (under 2,000 transitions per second) and I am not sure if…

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## [How to select one msg.payload out of 4 recieved](https://discourse.nodered.org/t/how-to-select-one-msg-payload-out-of-4-recieved/28355)

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**Author:** [@anthony\_dob](https://discourse.nodered.org/u/anthony_dob)\
**Replies:** 22\
**Last updated:** [15 June 2020 22:03 UTC](https://discourse.nodered.org/t/how-to-select-one-msg-payload-out-of-4-recieved/28355 "2020-06-15T22:03:33Z")

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Hello, Im working on a IoT project where i want to control 8 leds and 4 button states from my Nucleo. The goal is to see each button state seperately on my phone. For this i have a MQTT topic for each button. The proble…

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## [My Z-Wave heating solution](https://discourse.nodered.org/t/my-z-wave-heating-solution/28322)

<div class="topic-metadata">

**Author:** [@Maximus1](https://discourse.nodered.org/u/Maximus1)\
**Replies:** 4\
**Last updated:** [15 June 2020 21:45 UTC](https://discourse.nodered.org/t/my-z-wave-heating-solution/28322 "2020-06-15T21:45:57Z")

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Two years ago I bought a Devolo Home Control (DHC) with some heaters. The DHC is really crap and i switched to an Everspring Z-Wave USB Dongle. After Installing all the depencies and modifying the original Flow found s…

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## [Epidemic Models](https://discourse.nodered.org/t/epidemic-models/27455)

<div class="topic-metadata">

**Author:** [@drmibell](https://discourse.nodered.org/u/drmibell)\
**Replies:** 26\
**Last updated:** [15 June 2020 21:39 UTC](https://discourse.nodered.org/t/epidemic-models/27455 "2020-06-15T21:39:25Z")

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I have been following the remarkable COVID-19 pandemic charts posted by @janvda here and here, and I wanted to be able to make comparisons with predictions from contagious disease models and explore a few "what if" scen…

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