# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=874

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

**Page:** 875

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## [How to install node-red with custom nodes without internet connection?](https://discourse.nodered.org/t/how-to-install-node-red-with-custom-nodes-without-internet-connection/12361)

<div class="topic-metadata">

**Author:** [@gbove731](https://discourse.nodered.org/u/gbove731)\
**Replies:** 1\
**Last updated:** [20 June 2019 15:07 UTC](https://discourse.nodered.org/t/how-to-install-node-red-with-custom-nodes-without-internet-connection/12361 "2019-06-20T15:07:31Z")

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I would like to deploy my Node-Red environment (with custom nodes) in a windows 10 pc without internet connection and without administrative permission. Is there a way to do that?

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## [Count data, store it and send it by trigger](https://discourse.nodered.org/t/count-data-store-it-and-send-it-by-trigger/12424)

<div class="topic-metadata">

**Author:** [@Carloj](https://discourse.nodered.org/u/Carloj)\
**Replies:** 4\
**Last updated:** [20 June 2019 11:59 UTC](https://discourse.nodered.org/t/count-data-store-it-and-send-it-by-trigger/12424 "2019-06-20T11:59:00Z")

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I want to count the amount of messages, store them and then send the total every 10 seconds to the mqtt broker. Like the first signal on the broker is 0, then 50, then 100...... I got the following flow but it just sen…

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## [Node-red installation always finishing with error](https://discourse.nodered.org/t/node-red-installation-always-finishing-with-error/12014)

<div class="topic-metadata">

**Author:** [@saspol](https://discourse.nodered.org/u/saspol)\
**Replies:** 5\
**Last updated:** [20 June 2019 07:24 UTC](https://discourse.nodered.org/t/node-red-installation-always-finishing-with-error/12014 "2019-06-20T07:24:42Z")

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Hello, I tried different install methods, but always got error in same place. Guess some system library not installed, can you suggest please how to fix this? npm install --production \> bcrypt@3.0.5 install /var/www…

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## [Pre-signed url IBM COS](https://discourse.nodered.org/t/pre-signed-url-ibm-cos/12394)

<div class="topic-metadata">

**Author:** [@burtonboucher](https://discourse.nodered.org/u/burtonboucher)\
**Replies:** 0\
**Last updated:** [19 June 2019 12:16 UTC](https://discourse.nodered.org/t/pre-signed-url-ibm-cos/12394 "2019-06-19T12:16:23Z")

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Using node-red-contrib-cos 0.15. running on Node-RED v0.20.5 blue mix. Checking getURL does not return url in msg. End goal is to get presign url for IBM COS. JavaScript code ok. Just need most simple GET using querystr…

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## [How to set LoRa TTN node to trigger another node?](https://discourse.nodered.org/t/how-to-set-lora-ttn-node-to-trigger-another-node/12365)

<div class="topic-metadata">

**Author:** [@HaVi](https://discourse.nodered.org/u/HaVi)\
**Replies:** 15\
**Last updated:** [19 June 2019 12:25 UTC](https://discourse.nodered.org/t/how-to-set-lora-ttn-node-to-trigger-another-node/12365 "2019-06-19T12:25:18Z")

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The LoRa node receives a payload and writes the measurement in a database, so far so good. But I also want the LoRa node to activate / trigger the HTTP Request when a payload comes in. Can someone tell me which node I ne…

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## [NRF24 - WiFi Problem on raspberry pi](https://discourse.nodered.org/t/nrf24-wifi-problem-on-raspberry-pi/12379)

<div class="topic-metadata">

**Author:** [@nahuavrilero](https://discourse.nodered.org/u/nahuavrilero)\
**Replies:** 8\
**Last updated:** [19 June 2019 12:01 UTC](https://discourse.nodered.org/t/nrf24-wifi-problem-on-raspberry-pi/12379 "2019-06-19T12:01:47Z")

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Hi! A few days ago, i tried to use NRF24 node. The thing is that there's an error ocurring and the module doesn't load up (i can see this in node-red log). But something strange is happening: when this error occurs, Ra…

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## [Problem with certificate file](https://discourse.nodered.org/t/problem-with-certificate-file/12390)

<div class="topic-metadata">

**Author:** [@dongtuuyenblackpeony](https://discourse.nodered.org/u/dongtuuyenblackpeony)\
**Replies:** 1\
**Last updated:** [19 June 2019 10:36 UTC](https://discourse.nodered.org/t/problem-with-certificate-file/12390 "2019-06-19T10:36:05Z")

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Hi guys, new to the forum and I have been able to google some similar topics, but not find a concrete solution. I am trying to use the IIOT-OPCUA client from the Contrib library, but get this error: cannot locate certi…

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## [Force node-red to English?](https://discourse.nodered.org/t/force-node-red-to-english/9630)

<div class="topic-metadata">

**Author:** [@jaeti01](https://discourse.nodered.org/u/jaeti01)\
**Replies:** 14\
**Last updated:** [19 June 2019 09:39 UTC](https://discourse.nodered.org/t/force-node-red-to-english/9630 "2019-06-19T09:39:58Z")

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Hello, I am in the process of moving my node-red from a raspberry installation into a docker container on a more powerful machine. I got the container up and running, still need to migrate data. But what struck me firs…

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## [Delete data from tables in the dashboard and update in sqlite](https://discourse.nodered.org/t/delete-data-from-tables-in-the-dashboard-and-update-in-sqlite/12383)

<div class="topic-metadata">

**Author:** [@ppungpong](https://discourse.nodered.org/u/ppungpong)\
**Replies:** 0\
**Last updated:** [19 June 2019 08:10 UTC](https://discourse.nodered.org/t/delete-data-from-tables-in-the-dashboard-and-update-in-sqlite/12383 "2019-06-19T08:10:08Z")

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Hey all, I have a problem for 2 days. I have to do a project to send to an internship. But I don't know about html though, I design IoT monitoring and show data in table on dashboard. My feature is when deleting it can …

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## [Owl Intuition & Node Red](https://discourse.nodered.org/t/owl-intuition-node-red/692)

<div class="topic-metadata">

**Author:** [@gillettos](https://discourse.nodered.org/u/gillettos)\
**Replies:** 5\
**Last updated:** [19 June 2019 07:18 UTC](https://discourse.nodered.org/t/owl-intuition-node-red/692 "2019-06-19T07:18:14Z")

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I’m a newbee here so go easy please… :roll\_eyes: Just getting into node\_red and must say I getting more and more hooked!! Basically I’m creating a home automation system, which I’ve connected up my Ikea Tradfri lightin…

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## [Node-red-contrib-web-worldmap and IOS - Map not displayed](https://discourse.nodered.org/t/node-red-contrib-web-worldmap-and-ios-map-not-displayed/12174)

<div class="topic-metadata">

**Author:** [@Agratam](https://discourse.nodered.org/u/Agratam)\
**Replies:** 3\
**Last updated:** [19 June 2019 06:27 UTC](https://discourse.nodered.org/t/node-red-contrib-web-worldmap-and-ios-map-not-displayed/12174 "2019-06-19T06:27:41Z")

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Hallo, I'm new to the forum, so first of all.. Hi everyone! I've been plaing around with home assistant for about 1 year now and almost immediately transitioned all my automation to node-red, its great, and somehow eas…

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## [Using/embedding Node-RED Editor in an existing Angular 2+ project](https://discourse.nodered.org/t/using-embedding-node-red-editor-in-an-existing-angular-2-project/5970)

<div class="topic-metadata">

**Author:** [@jk\_nodered](https://discourse.nodered.org/u/jk_nodered)\
**Replies:** 2\
**Last updated:** [17 June 2019 16:41 UTC](https://discourse.nodered.org/t/using-embedding-node-red-editor-in-an-existing-angular-2-project/5970 "2019-06-17T16:41:26Z")

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Hello, I am new to node-red. In my Angular 2+ project, I need a workflow editor. I am evaluating many node modules/javascript libraries for the same. I like the node-red flow editor and is interested in understanding i…

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## [Embed Node-RED into mean express on the same port in an iframe](https://discourse.nodered.org/t/embed-node-red-into-mean-express-on-the-same-port-in-an-iframe/785)

<div class="topic-metadata">

**Author:** [@Dr.legendaddy](https://discourse.nodered.org/u/Dr.legendaddy)\
**Replies:** 26\
**Last updated:** [19 June 2019 02:48 UTC](https://discourse.nodered.org/t/embed-node-red-into-mean-express-on-the-same-port-in-an-iframe/785 "2019-06-19T02:48:08Z")

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Hello everybody! Thanks for all the great info in this forum! I have problems whilst trying to embed node-RED in my express mean app in an iframe. I want it to be on the same port to communicate with node-RED and use th…

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## [Delay node, when send a msg.reset can I send also next parameters?](https://discourse.nodered.org/t/delay-node-when-send-a-msg-reset-can-i-send-also-next-parameters/12367)

<div class="topic-metadata">

**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\
**Replies:** 9\
**Last updated:** [18 June 2019 20:09 UTC](https://discourse.nodered.org/t/delay-node-when-send-a-msg-reset-can-i-send-also-next-parameters/12367 "2019-06-18T20:09:38Z")

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Hi, I need to reset a node delay from previous value and at the same time I need to set on it the new message with new delay value. Can I do it with the same object or should I create anpther output on that function and …

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## [How to Create a call back server](https://discourse.nodered.org/t/how-to-create-a-call-back-server/12370)

<div class="topic-metadata">

**Author:** [@dineshpittala](https://discourse.nodered.org/u/dineshpittala)\
**Replies:** 3\
**Last updated:** [18 June 2019 18:25 UTC](https://discourse.nodered.org/t/how-to-create-a-call-back-server/12370 "2019-06-18T18:25:45Z")

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How to create a call back server and how to link to my node. kindly Help.

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## [How to send temperature data using GSM SIM900 Module to Node-RED](https://discourse.nodered.org/t/how-to-send-temperature-data-using-gsm-sim900-module-to-node-red/12337)

<div class="topic-metadata">

**Author:** [@bouali](https://discourse.nodered.org/u/bouali)\
**Replies:** 5\
**Last updated:** [18 June 2019 14:05 UTC](https://discourse.nodered.org/t/how-to-send-temperature-data-using-gsm-sim900-module-to-node-red/12337 "2019-06-18T14:05:21Z")

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please how to send temperature data to node red using sim900 gsm module via mqtt . i have installed mosquitto broker and node red in my raspberry pi . my system is DHT11 sensor + Arduino+ nodered

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## [Node red won't restart because of flow credentials](https://discourse.nodered.org/t/node-red-wont-restart-because-of-flow-credentials/12347)

<div class="topic-metadata">

**Author:** [@nassima100](https://discourse.nodered.org/u/nassima100)\
**Replies:** 11\
**Last updated:** [18 June 2019 12:45 UTC](https://discourse.nodered.org/t/node-red-wont-restart-because-of-flow-credentials/12347 "2019-06-18T12:45:56Z")

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Hello, I had Node Red working fine than I tried to deploy but I lost connection to the server and had this message: Your flow credentials file is encrypted using a system-generated key. If the system-generated key is l…

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## [Delay in activating a second command](https://discourse.nodered.org/t/delay-in-activating-a-second-command/12353)

<div class="topic-metadata">

**Author:** [@Unikumet](https://discourse.nodered.org/u/Unikumet)\
**Replies:** 4\
**Last updated:** [18 June 2019 09:05 UTC](https://discourse.nodered.org/t/delay-in-activating-a-second-command/12353 "2019-06-18T09:05:08Z")

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Hi all, I'm currently working on a flow which has a basic UI which allows you to activate a function with a on / off switch which is connected to a trigger function automatically turning it off again after x-seconds. …

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## [Multiple Timers](https://discourse.nodered.org/t/multiple-timers/12321)

<div class="topic-metadata">

**Author:** [@andre\_messias](https://discourse.nodered.org/u/andre_messias)\
**Replies:** 6\
**Last updated:** [18 June 2019 08:29 UTC](https://discourse.nodered.org/t/multiple-timers/12321 "2019-06-18T08:29:16Z")

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Hi everybody! It's my 1st time in the Forum and my 1st project too. I would like to have multiple timers available which will start according to a change state according to inputs. Therefore I could have simultaneously…

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## [Creating an Inject timer in a different timezone?](https://discourse.nodered.org/t/creating-an-inject-timer-in-a-different-timezone/12346)

<div class="topic-metadata">

**Author:** [@JonRussell](https://discourse.nodered.org/u/JonRussell)\
**Replies:** 1\
**Last updated:** [18 June 2019 07:43 UTC](https://discourse.nodered.org/t/creating-an-inject-timer-in-a-different-timezone/12346 "2019-06-18T07:43:52Z")

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Hi, I'm running NodeRed to manage my MQTT / Tasmota home automation devices. One of the devices turns my hot water immersion heater on and off on Economy 7. (in case people don't know what Economy 7 is in the UK, its …

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## [Anyway to send data from Node-Red to Google Spread sheet for storing in table as dtb?](https://discourse.nodered.org/t/anyway-to-send-data-from-node-red-to-google-spread-sheet-for-storing-in-table-as-dtb/12212)

<div class="topic-metadata">

**Author:** [@Yortz](https://discourse.nodered.org/u/Yortz)\
**Replies:** 2\
**Last updated:** [18 June 2019 02:42 UTC](https://discourse.nodered.org/t/anyway-to-send-data-from-node-red-to-google-spread-sheet-for-storing-in-table-as-dtb/12212 "2019-06-18T02:42:41Z")

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I'm try to put telemetry data from node red to google sheet for monitoring and stored as dtb. In the past I can create google form and used it as http request to put data to sheet. But now google form has changed link fo…

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## [Unable to store information in cloudant](https://discourse.nodered.org/t/unable-to-store-information-in-cloudant/12349)

<div class="topic-metadata">

**Author:** [@leftShark2019](https://discourse.nodered.org/u/leftShark2019)\
**Replies:** 0\
**Last updated:** [18 June 2019 00:18 UTC](https://discourse.nodered.org/t/unable-to-store-information-in-cloudant/12349 "2019-06-18T00:18:08Z")

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I've read through several pages of background docs, I have a cloudant database provisioned, I've successfully made a function that takes a photo with camerapi and a flow that converts that photo data to cloudant readable…

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## [Travel Notifications](https://discourse.nodered.org/t/travel-notifications/12345)

<div class="topic-metadata">

**Author:** [@monsieurlatte](https://discourse.nodered.org/u/monsieurlatte)\
**Replies:** 4\
**Last updated:** [17 June 2019 22:42 UTC](https://discourse.nodered.org/t/travel-notifications/12345 "2019-06-17T22:42:35Z")

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So I would like to setup notifications in node red for my wife and myself cars/phones. I have it in HA when I added in some zones and stuff but I would really like to do it in HA. I found someone who did exactly what I…

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## [Is there a non-linear version of the Range node?](https://discourse.nodered.org/t/is-there-a-non-linear-version-of-the-range-node/12343)

<div class="topic-metadata">

**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 1\
**Last updated:** [17 June 2019 21:55 UTC](https://discourse.nodered.org/t/is-there-a-non-linear-version-of-the-range-node/12343 "2019-06-17T21:55:16Z")

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I have a digital mixer which accepts input within the range -99 to +99. Problem is, the output of the mixer is like this: -99 muted 50 barely audible 20 very quiet 0 good level 5 very loud etc. I can of course us…

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## [Which nodes shown in palette](https://discourse.nodered.org/t/which-nodes-shown-in-palette/12298)

<div class="topic-metadata">

**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 11\
**Last updated:** [17 June 2019 20:27 UTC](https://discourse.nodered.org/t/which-nodes-shown-in-palette/12298 "2019-06-17T20:27:00Z")

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What is it that determines which npm packages appear in the Manage Palette feature?

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## [Msg.payload in json](https://discourse.nodered.org/t/msg-payload-in-json/12339)

<div class="topic-metadata">

**Author:** [@Duncan](https://discourse.nodered.org/u/Duncan)\
**Replies:** 2\
**Last updated:** [17 June 2019 20:20 UTC](https://discourse.nodered.org/t/msg-payload-in-json/12339 "2019-06-17T20:20:14Z")

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easy question for you all. I am trying to set a variable: msg.payload: 10, in a json format. The msg.payload : 10 must replace the "timeout" : 20 { "payload": "on", "timeout": 20, "warning": 5 } thanks.

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## [Getting 'Last 5' Readings - Ring Circle Buffers with Topic-awareness](https://discourse.nodered.org/t/getting-last-5-readings-ring-circle-buffers-with-topic-awareness/12335)

<div class="topic-metadata">

**Author:** [@PJMcL](https://discourse.nodered.org/u/PJMcL)\
**Replies:** 0\
**Last updated:** [17 June 2019 18:34 UTC](https://discourse.nodered.org/t/getting-last-5-readings-ring-circle-buffers-with-topic-awareness/12335 "2019-06-17T18:34:19Z")

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I'm trying to create analysis based upon 'Last 5' payloads per Device. The Last 5 payloads can be documents, not just numbers. There are many Buffers (Ring, Circle and Array) and not all of these are numeric only. But…

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## [Examples of working with FileStreams?](https://discourse.nodered.org/t/examples-of-working-with-filestreams/12195)

<div class="topic-metadata">

**Author:** [@dustinw](https://discourse.nodered.org/u/dustinw)\
**Replies:** 6\
**Last updated:** [17 June 2019 16:16 UTC](https://discourse.nodered.org/t/examples-of-working-with-filestreams/12195 "2019-06-17T16:16:32Z")

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Hi Everyone, My team is working on some flows for backing up files up to AWS S3 buckets. This is for back-up purposes and the files will then be moved from S3 to Glacier. The files themselves are coming from multiple lo…

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## [UI won't display nodes](https://discourse.nodered.org/t/ui-wont-display-nodes/12207)

<div class="topic-metadata">

**Author:** [@leftShark2019](https://discourse.nodered.org/u/leftShark2019)\
**Replies:** 6\
**Last updated:** [17 June 2019 16:03 UTC](https://discourse.nodered.org/t/ui-wont-display-nodes/12207 "2019-06-17T16:03:38Z")

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So I've recently changed the node.js version I'm using and Node-RED has finally started displaying the camerapi and dashboard modules I've loaded in. It's just when U run my flow that creates a ui template and uses the …

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## [Calculate average from two payloads](https://discourse.nodered.org/t/calculate-average-from-two-payloads/12319)

<div class="topic-metadata">

**Author:** [@Carloj](https://discourse.nodered.org/u/Carloj)\
**Replies:** 6\
**Last updated:** [17 June 2019 14:33 UTC](https://discourse.nodered.org/t/calculate-average-from-two-payloads/12319 "2019-06-17T14:33:55Z")

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Hi, Im trying to calculate an average amount of counts each minute that the machine is on. I got the total amount of counts and the total time the machine is on. Now i tried to calculate the average of those to with a f…

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