# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=717

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

**Page:** 718

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## [Epoch time conversion to GMT +8](https://discourse.nodered.org/t/epoch-time-conversion-to-gmt-8/29862)

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**Author:** [@mshaz](https://discourse.nodered.org/u/mshaz)\
**Replies:** 5\
**Last updated:** [10 July 2020 18:11 UTC](https://discourse.nodered.org/t/epoch-time-conversion-to-gmt-8/29862 "2020-07-10T18:11:37Z")

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Hi I got this code from this forum https://discourse.nodered.org/t/converting-epoch-time/9858. How do I convert it to GMT +8. The payload came from a Sigfox device. Thank you

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## [Get data from an array of objects](https://discourse.nodered.org/t/get-data-from-an-array-of-objects/29619)

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**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 22\
**Last updated:** [10 July 2020 17:30 UTC](https://discourse.nodered.org/t/get-data-from-an-array-of-objects/29619 "2020-07-10T17:30:45Z")

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I'm using Climacell to obtain forecast data which I want to plot in a chart, and despite many attempts over several days, I cannot get the data into the correct format :rage: The api returns an array of about 73 objects…

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## [System Requirements](https://discourse.nodered.org/t/system-requirements/29802)

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**Author:** [@sanserg](https://discourse.nodered.org/u/sanserg)\
**Replies:** 5\
**Last updated:** [10 July 2020 16:53 UTC](https://discourse.nodered.org/t/system-requirements/29802 "2020-07-10T16:53:32Z")

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Hi , does anybody know where can I get some guidance about hardware system requirements to install node-red ? How can I size the node-red infra ? tks

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## [Best DS18B20 Node? Mine doesn't work properly](https://discourse.nodered.org/t/best-ds18b20-node-mine-doesnt-work-properly/29724)

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**Author:** [@oncdastan](https://discourse.nodered.org/u/oncdastan)\
**Replies:** 6\
**Last updated:** [10 July 2020 15:17 UTC](https://discourse.nodered.org/t/best-ds18b20-node-mine-doesnt-work-properly/29724 "2020-07-10T15:17:06Z")

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Hi. I am using this node: But it is not working properly. Please, check this post: I am trying to use a switch, but it responds after the sensor node is done doing its own thing. It works really fast without the no…

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## [Problem Using a Button with DS18B20 Node](https://discourse.nodered.org/t/problem-using-a-button-with-ds18b20-node/29674)

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**Author:** [@oncdastan](https://discourse.nodered.org/u/oncdastan)\
**Replies:** 34\
**Last updated:** [10 July 2020 15:15 UTC](https://discourse.nodered.org/t/problem-using-a-button-with-ds18b20-node/29674 "2020-07-10T15:15:27Z")

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Hi. I am using the node below: The problem is, I need to control a relay with a button on the screen, but for now, I am using an LED to see if it works or not. When I click on it, it takes 2-3 seconds for LED to light…

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## [Converting epoch time](https://discourse.nodered.org/t/converting-epoch-time/9858)

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**Author:** [@Sirhc](https://discourse.nodered.org/u/Sirhc)\
**Replies:** 4\
**Last updated:** [10 July 2020 13:25 UTC](https://discourse.nodered.org/t/converting-epoch-time/9858 "2020-07-10T13:25:09Z")

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Hello I have the following code in a function node. I am trying to convert string\_lastseen into a readable format (string\_lastseen = 1554625504). But the date function keeps returning what looks like the current time/da…

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## [Make my flow available to everyone](https://discourse.nodered.org/t/make-my-flow-available-to-everyone/29839)

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**Author:** [@Sanju\_Shastry](https://discourse.nodered.org/u/Sanju_Shastry)\
**Replies:** 4\
**Last updated:** [10 July 2020 12:12 UTC](https://discourse.nodered.org/t/make-my-flow-available-to-everyone/29839 "2020-07-10T12:12:23Z")

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Hi Community. I am very new to Node- Red and its my first question here. So it might sound a bit naive. Apologies for that. I have created a flow for my project and I was curious if I can publish this whole flow somewh…

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## [Multiple NodeRed Instances on different Ports - Linux/SystemD](https://discourse.nodered.org/t/multiple-nodered-instances-on-different-ports-linux-systemd/9555)

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**Author:** [@Dustin](https://discourse.nodered.org/u/Dustin)\
**Replies:** 26\
**Last updated:** [10 July 2020 10:11 UTC](https://discourse.nodered.org/t/multiple-nodered-instances-on-different-ports-linux-systemd/9555 "2020-07-10T10:11:27Z")

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I know this has been addressed because I've made it work in the past, so I apologize for rehashing an already discussed topic... but I can't seem to find the instructions again. I've tried multiple times using some of th…

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## [Fresh in node-red](https://discourse.nodered.org/t/fresh-in-node-red/29836)

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**Author:** [@emicjed](https://discourse.nodered.org/u/emicjed)\
**Replies:** 1\
**Last updated:** [10 July 2020 09:57 UTC](https://discourse.nodered.org/t/fresh-in-node-red/29836 "2020-07-10T09:57:45Z")

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Hello, I am looking for help in creating a node-red using Kubernates cluster in IBMCloud. I know that there are tutorials on Google Cloud but as the topic is fresh and neisiety I can not cope with it. Thank you very much…

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## [Issue authenticating node-red-contrib-google-oauth2](https://discourse.nodered.org/t/issue-authenticating-node-red-contrib-google-oauth2/26185)

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**Author:** [@phreaq](https://discourse.nodered.org/u/phreaq)\
**Replies:** 3\
**Last updated:** [10 July 2020 09:11 UTC](https://discourse.nodered.org/t/issue-authenticating-node-red-contrib-google-oauth2/26185 "2020-07-10T09:11:12Z")

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I am having some issues trying to authenticate the node-red-contrib-google-oauth2 node. I have a Google Project set up, and have set up my credentials. When trying trying to configure the node, I key in my ClientID, and…

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## [Add new entry on msg](https://discourse.nodered.org/t/add-new-entry-on-msg/29832)

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**Author:** [@rex](https://discourse.nodered.org/u/rex)\
**Replies:** 2\
**Last updated:** [10 July 2020 08:50 UTC](https://discourse.nodered.org/t/add-new-entry-on-msg/29832 "2020-07-10T08:50:21Z")

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I think is a stupid error but this flow does not work. I've already used this function but now, in this example, it does not do the job. \[{"id":"266afe29.6f9e82","type":"tab","label":"Flow 2","disabled":false,"info":""}…

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## [Unable to install new node in node-red - OpenWRT](https://discourse.nodered.org/t/unable-to-install-new-node-in-node-red-openwrt/29757)

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**Author:** [@karthikkarra](https://discourse.nodered.org/u/karthikkarra)\
**Replies:** 14\
**Last updated:** [10 July 2020 08:03 UTC](https://discourse.nodered.org/t/unable-to-install-new-node-in-node-red-openwrt/29757 "2020-07-10T08:03:59Z")

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Hi All, I have successfully installed node-red on openwrt and was also able to create flows and its working perfectly. But when I try to install new nodes such as sql etc.. I am facing an Illegal instruction\] / rollbac…

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## [Subflow with dashboard nodes](https://discourse.nodered.org/t/subflow-with-dashboard-nodes/29812)

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**Author:** [@HenrikRolandHansen](https://discourse.nodered.org/u/HenrikRolandHansen)\
**Replies:** 2\
**Last updated:** [10 July 2020 07:41 UTC](https://discourse.nodered.org/t/subflow-with-dashboard-nodes/29812 "2020-07-10T07:41:08Z")

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Not sure if this is a future request or alredy discused but i'm trying to create a subflow contraning dashboard button, sliders and text nodes. When using a single subflow the dashboard nodes are shown in the selected ta…

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## [Node.debug in function node code](https://discourse.nodered.org/t/node-debug-in-function-node-code/29825)

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**Author:** [@rogerjames99](https://discourse.nodered.org/u/rogerjames99)\
**Replies:** 2\
**Last updated:** [10 July 2020 07:17 UTC](https://discourse.nodered.org/t/node-debug-in-function-node-code/29825 "2020-07-10T07:17:21Z")

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The documentation on writing code for function nodes says that node.debug can be used for logging. However whenever I try to use it I get unhandled exceptions saying that node is undefined. What am I missing here? conso…

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## [Browser lock up](https://discourse.nodered.org/t/browser-lock-up/29697)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 5\
**Last updated:** [10 July 2020 05:42 UTC](https://discourse.nodered.org/t/browser-lock-up/29697 "2020-07-10T05:42:06Z")

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Just had by browser tab freeze when selecting nodes inside a group (1.1.0) Other NR tabs still worked - went back to original tab (browsing my Win10 instance) and had this which I've not ever had before on NR Waited/…

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## [Offical Upgrade Guide for Node Red?](https://discourse.nodered.org/t/offical-upgrade-guide-for-node-red/29499)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 31\
**Last updated:** [10 July 2020 04:45 UTC](https://discourse.nodered.org/t/offical-upgrade-guide-for-node-red/29499 "2020-07-10T04:45:03Z")

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I am having trouble finding the official recommended guide to update to latest version of node red. I am using Pi devices, so know that a bit of unique case. But I have seen references to node-red-upgrade command or sc…

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## [Encrypt payload and match with DB query](https://discourse.nodered.org/t/encrypt-payload-and-match-with-db-query/29784)

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**Author:** [@Peter](https://discourse.nodered.org/u/Peter)\
**Replies:** 20\
**Last updated:** [10 July 2020 01:23 UTC](https://discourse.nodered.org/t/encrypt-payload-and-match-with-db-query/29784 "2020-07-10T01:23:03Z")

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Hi Guys, Overview: authentication project whereby the MQTT node receives a SHA256 hash as payload and then needs to hold the Hash temporary, while it runs an SQLite query on the user's table and digests (Sha256) each u…

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## [Node-red-contrib-google-action 1.2.1](https://discourse.nodered.org/t/node-red-contrib-google-action-1-2-1/29818)

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**Author:** [@pmnodered](https://discourse.nodered.org/u/pmnodered)\
**Replies:** 0\
**Last updated:** [10 July 2020 00:42 UTC](https://discourse.nodered.org/t/node-red-contrib-google-action-1-2-1/29818 "2020-07-10T00:42:43Z")

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Hi guys, i have a project in my raspberry using node-red-contrib-google-action, that was works fine on may 2018. Today, i want use again but not working. I renewed my self-signed certificated but no luck. Google say "xx…

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## [How to use keras machine learning model for predicting new values in NodeRED?](https://discourse.nodered.org/t/how-to-use-keras-machine-learning-model-for-predicting-new-values-in-nodered/29817)

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**Author:** [@deekshaha](https://discourse.nodered.org/u/deekshaha)\
**Replies:** 0\
**Last updated:** [10 July 2020 00:38 UTC](https://discourse.nodered.org/t/how-to-use-keras-machine-learning-model-for-predicting-new-values-in-nodered/29817 "2020-07-10T00:38:30Z")

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Hi I have made lstm model and saved it as .h5 model. I want to use it in node red for predicting new values. Can anyone guide me how to do that in node red?

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## [Multiple responses using node-red-contrib-google-action 1.2.1](https://discourse.nodered.org/t/multiple-responses-using-node-red-contrib-google-action-1-2-1/10276)

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**Author:** [@mike67](https://discourse.nodered.org/u/mike67)\
**Replies:** 3\
**Last updated:** [21 April 2019 20:40 UTC](https://discourse.nodered.org/t/multiple-responses-using-node-red-contrib-google-action-1-2-1/10276 "2019-04-21T20:40:43Z")

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Hello I use node-red-contrib-google-action 1.2.1. Actually, I can exchange beetween google assistant and node-red, that works. The only problem is that I must ask something in google assistants, and node-red answers. …

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## [Help with slightly different rf 433mhz signal code from sonoff rf Bridge flashed with tasmota and portisch](https://discourse.nodered.org/t/help-with-slightly-different-rf-433mhz-signal-code-from-sonoff-rf-bridge-flashed-with-tasmota-and-portisch/29664)

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**Author:** [@Robmak](https://discourse.nodered.org/u/Robmak)\
**Replies:** 13\
**Last updated:** [9 July 2020 23:34 UTC](https://discourse.nodered.org/t/help-with-slightly-different-rf-433mhz-signal-code-from-sonoff-rf-bridge-flashed-with-tasmota-and-portisch/29664 "2020-07-09T23:34:02Z")

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I have lots of 433mhz sensors around the house and 433mhz plugs and wireless heating system. All devices are constantly sending check signals for battery status and connection checks. This means my rf Bridge is always de…

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## [Configuring Public Node-RED Server on RPi](https://discourse.nodered.org/t/configuring-public-node-red-server-on-rpi/29701)

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**Author:** [@BrainBomber100](https://discourse.nodered.org/u/BrainBomber100)\
**Replies:** 28\
**Last updated:** [9 July 2020 23:25 UTC](https://discourse.nodered.org/t/configuring-public-node-red-server-on-rpi/29701 "2020-07-09T23:25:01Z")

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Can someone please help me figure out how to use DDNS services to configure my Node-RED server? I honestly don't know what I'm doing. I'm using noip.com's DDNS services and I've gotten a hostname and installed the DUC on…

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## [Cannot access node red from smartphone](https://discourse.nodered.org/t/cannot-access-node-red-from-smartphone/29686)

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**Author:** [@tadi](https://discourse.nodered.org/u/tadi)\
**Replies:** 32\
**Last updated:** [9 July 2020 23:20 UTC](https://discourse.nodered.org/t/cannot-access-node-red-from-smartphone/29686 "2020-07-09T23:20:28Z")

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Hello everyone I am new user of node-red indeed, I install the interface on PC and I tried to have access to this iterface using my mobile phone. I declared the address of the PC on the browser of the smartphone follo…

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## [Clearing a chart?:](https://discourse.nodered.org/t/clearing-a-chart/29801)

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**Author:** [@Nodi.Rubrum](https://discourse.nodered.org/u/Nodi.Rubrum)\
**Replies:** 7\
**Last updated:** [9 July 2020 23:08 UTC](https://discourse.nodered.org/t/clearing-a-chart/29801 "2020-07-09T23:08:21Z")

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Did 1.1.1 release change how to empty a chart node? I sent a empty JSON array, only pushes a null point to chart. I sent empty string payload pushes a null point to the chart? Something change?

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## [How to store and fetch data to pouchdb node](https://discourse.nodered.org/t/how-to-store-and-fetch-data-to-pouchdb-node/29700)

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**Author:** [@akhtar321h](https://discourse.nodered.org/u/akhtar321h)\
**Replies:** 7\
**Last updated:** [9 July 2020 22:16 UTC](https://discourse.nodered.org/t/how-to-store-and-fetch-data-to-pouchdb-node/29700 "2020-07-09T22:16:01Z")

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Hello Everyone, I want to store and access the data by using pouchdb node. I am able to store data in pouch db server, but I don't know how to access data from pouchdb server through pouchdb node. Please help me out. …

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## [RFXtrx node not working on one Pi after upgrade](https://discourse.nodered.org/t/rfxtrx-node-not-working-on-one-pi-after-upgrade/29805)

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**Author:** [@Mastiff](https://discourse.nodered.org/u/Mastiff)\
**Replies:** 6\
**Last updated:** [9 July 2020 21:56 UTC](https://discourse.nodered.org/t/rfxtrx-node-not-working-on-one-pi-after-upgrade/29805 "2020-07-09T21:56:40Z")

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I did the regular upgrade process that I always use on two identical Pis: bash \<(curl -sL https://raw.githubusercontent.com/node-red/linux-installers/master/deb/update-nodejs-and-nodered) But on one of them I updated P…

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## [Files being written as 'root' instead of 'user'](https://discourse.nodered.org/t/files-being-written-as-root-instead-of-user/29804)

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**Author:** [@khakira](https://discourse.nodered.org/u/khakira)\
**Replies:** 3\
**Last updated:** [9 July 2020 21:52 UTC](https://discourse.nodered.org/t/files-being-written-as-root-instead-of-user/29804 "2020-07-09T21:52:36Z")

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Hi Ubuntu 18.04 Brand new to node-js. I have hooked into an S7 (Siemens PLC system) device and I am writing to a file. If I have node-red set up as a service via systemd the files are written with root ownership. To…

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## [Sequential Execution of an Array](https://discourse.nodered.org/t/sequential-execution-of-an-array/29794)

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**Author:** [@tonytroy](https://discourse.nodered.org/u/tonytroy)\
**Replies:** 3\
**Last updated:** [9 July 2020 21:36 UTC](https://discourse.nodered.org/t/sequential-execution-of-an-array/29794 "2020-07-09T21:36:12Z")

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Hello Everyone, I am new to node-red and i am trying to loop through an array and trying to do something for each item in an array in a sequential manner. Only after all the nodes between the split and the join are comp…

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## [Loading HTML Code from File](https://discourse.nodered.org/t/loading-html-code-from-file/29806)

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**Author:** [@dparm](https://discourse.nodered.org/u/dparm)\
**Replies:** 8\
**Last updated:** [9 July 2020 21:29 UTC](https://discourse.nodered.org/t/loading-html-code-from-file/29806 "2020-07-09T21:29:49Z")

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So this all started when I wanted to make a specific form for a front end application in Node Red. I thought I would be able to write some code in Bootstrap Studio, copy it to a folder, and load it up using http in and h…

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## [Two inputs joined with logic in functions](https://discourse.nodered.org/t/two-inputs-joined-with-logic-in-functions/29623)

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**Author:** [@Robert126](https://discourse.nodered.org/u/Robert126)\
**Replies:** 20\
**Last updated:** [9 July 2020 20:58 UTC](https://discourse.nodered.org/t/two-inputs-joined-with-logic-in-functions/29623 "2020-07-09T20:58:07Z")

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I would like to connect two light switches (Sonoff with Tasmota MQTT). To manage a ventilator. Switch 1 is placed in the wc, and switch 2 in the bathroom. I'm made a join out of the two input mentioned above. Output o…

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