# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=388

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

**Page:** 389

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## [UDP instream limit](https://discourse.nodered.org/t/udp-instream-limit/61546)

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**Author:** [@lroman](https://discourse.nodered.org/u/lroman)\
**Replies:** 1\
**Last updated:** [20 April 2022 20:08 UTC](https://discourse.nodered.org/t/udp-instream-limit/61546 "2022-04-20T20:08:41Z")

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Hi, Is there a max number of edge devices that can send data to a UDP-IN node. For instance, a gateway running node-red and it listens for incoming UDP packets and the number of UDP messages is proportional to the numbe…

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## [Multiple JSON message into one Function Node](https://discourse.nodered.org/t/multiple-json-message-into-one-function-node/61524)

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**Author:** [@antsals](https://discourse.nodered.org/u/antsals)\
**Replies:** 3\
**Last updated:** [20 April 2022 19:46 UTC](https://discourse.nodered.org/t/multiple-json-message-into-one-function-node/61524 "2022-04-20T19:46:53Z")

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I'm sure this is really simple; I'm new to all this. I had a string from a link node and I have re-defined as a JSON message through a function; with msg.payload = { "OPC\_Tag": msg.topic, "Value": msg.payload } ret…

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## [Timestamp an hour out](https://discourse.nodered.org/t/timestamp-an-hour-out/61538)

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**Author:** [@antsals](https://discourse.nodered.org/u/antsals)\
**Replies:** 3\
**Last updated:** [20 April 2022 14:38 UTC](https://discourse.nodered.org/t/timestamp-an-hour-out/61538 "2022-04-20T14:38:22Z")

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Afternoon all I've used this in a function block to timestamp a JSON message:- var timestamp = new Date() This returns the dare and time but is an hour out. Based in the UK. Is there a way it can be matched to the PC…

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## [InfluxDB error on node-red](https://discourse.nodered.org/t/influxdb-error-on-node-red/61547)

<div class="topic-metadata">

**Author:** [@mayelle.26](https://discourse.nodered.org/u/mayelle.26)\
**Replies:** 2\
**Last updated:** [20 April 2022 14:34 UTC](https://discourse.nodered.org/t/influxdb-error-on-node-red/61547 "2022-04-20T14:34:36Z")

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Hello, I would like to put my TTN data via node-red on influxDB to use Grafana eventually. However I can't configure node-red-contrib-influxdb in the feed: I get the following error messages: \[error\] \[influxdb out:…

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## [UDP in IPv6 weird behaviour](https://discourse.nodered.org/t/udp-in-ipv6-weird-behaviour/61533)

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**Author:** [@Stelios](https://discourse.nodered.org/u/Stelios)\
**Replies:** 5\
**Last updated:** [20 April 2022 12:53 UTC](https://discourse.nodered.org/t/udp-in-ipv6-weird-behaviour/61533 "2022-04-20T12:53:28Z")

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Hi all! I've been using NR as an orchestrator (i hope im using that term properly) in the company I work for, for the last year. Recently we started exploring NB-IoT technology which communicates using UDP packets. I …

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## [Node-RED: Modify node-red-contrib-opcua keepSessionAlive](https://discourse.nodered.org/t/node-red-modify-node-red-contrib-opcua-keepsessionalive/59995)

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**Author:** [@Marek](https://discourse.nodered.org/u/Marek)\
**Replies:** 5\
**Last updated:** [20 April 2022 10:58 UTC](https://discourse.nodered.org/t/node-red-modify-node-red-contrib-opcua-keepsessionalive/59995 "2022-04-20T10:58:37Z")

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I am using Node-RED for communication with OPC UA Server. I installed the node-red-contrib-opcua Node for this purpose. Everything is working fine, but in some cases, I would like to change the OpcUa-Client keepSessionAl…

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## [Get node-red to host video stream from esp-eye's](https://discourse.nodered.org/t/get-node-red-to-host-video-stream-from-esp-eyes/61530)

<div class="topic-metadata">

**Author:** [@peter\_ravnsbaek](https://discourse.nodered.org/u/peter_ravnsbaek)\
**Replies:** 1\
**Last updated:** [20 April 2022 09:55 UTC](https://discourse.nodered.org/t/get-node-red-to-host-video-stream-from-esp-eyes/61530 "2022-04-20T09:55:59Z")

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Hi there! I am building a video stream service with 7+ esp-eyes that connects to a raspberry pi running node-red. Until now I have pretty much used this flow: (Another) ESP32CAM Multi-Client Streaming Display . But I n…

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## [Subflow context access - What I was shown isn't working](https://discourse.nodered.org/t/subflow-context-access-what-i-was-shown-isnt-working/61531)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 1\
**Last updated:** [20 April 2022 09:25 UTC](https://discourse.nodered.org/t/subflow-context-access-what-i-was-shown-isnt-working/61531 "2022-04-20T09:25:48Z")

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Original thread To test this I wrote this flow: \[{"id":"480c6735eef22428","type":"subflow","name":"Subflow 2","info":"","in":\[{"x":60,"y":80,"wires":\[{"id":"0baab8933b6c881b"}\]}\],"out":\[{"x":340,"y":80,"wires":\[{"id":"…

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## [Editing subflows - new tab position](https://discourse.nodered.org/t/editing-subflows-new-tab-position/61525)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 0\
**Last updated:** [20 April 2022 08:00 UTC](https://discourse.nodered.org/t/editing-subflows-new-tab-position/61525 "2022-04-20T08:00:17Z")

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NR 2.2.2 When I double click on a subflow to edit it in some versions it opens just to the right of the current tab. Others it opens way way way to the right of all tabs - as it used to. Isn't 2.2.2 supposed to open j…

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## [Searching for wordpress theme Claue V1.4.0](https://discourse.nodered.org/t/searching-for-wordpress-theme-claue-v1-4-0/61521)

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**Author:** [@nofesuvox1984](https://discourse.nodered.org/u/nofesuvox1984)\
**Replies:** 1\
**Last updated:** [20 April 2022 07:13 UTC](https://discourse.nodered.org/t/searching-for-wordpress-theme-claue-v1-4-0/61521 "2022-04-20T07:13:03Z")

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Any one can tell me any website where I can download Claue V1.4.0 null wordpress theme. Please help me, thank you

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## [Arduino Variable Speed Pool Motor?](https://discourse.nodered.org/t/arduino-variable-speed-pool-motor/61523)

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**Author:** [@Choder](https://discourse.nodered.org/u/Choder)\
**Replies:** 0\
**Last updated:** [20 April 2022 05:13 UTC](https://discourse.nodered.org/t/arduino-variable-speed-pool-motor/61523 "2022-04-20T05:13:19Z")

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I am wanting to control a three-phase 220vac variable speed pool pump from node red. Currently I am using node red installed in a VM proxmox server. This communicates via wifi to an ESP32 to control all my pool equipmen…

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## [Node RED OPCUA client does not remain subscribed when the device (server) connected is disconnected or switched off](https://discourse.nodered.org/t/node-red-opcua-client-does-not-remain-subscribed-when-the-device-server-connected-is-disconnected-or-switched-off/60631)

<div class="topic-metadata">

**Author:** [@dinesh](https://discourse.nodered.org/u/dinesh)\
**Replies:** 1\
**Last updated:** [19 April 2022 19:09 UTC](https://discourse.nodered.org/t/node-red-opcua-client-does-not-remain-subscribed-when-the-device-server-connected-is-disconnected-or-switched-off/60631 "2022-04-19T19:09:35Z")

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Hi, I'm using OPC UA in node red. Actually I have 2 devices with both communicating with each other. That means both device has its own server and client node. In my client I am using 'SUBSCRIBE' and it works fine. T…

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## [Delete Object pair based on its value](https://discourse.nodered.org/t/delete-object-pair-based-on-its-value/61468)

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**Author:** [@subwayfootlong](https://discourse.nodered.org/u/subwayfootlong)\
**Replies:** 2\
**Last updated:** [19 April 2022 18:36 UTC](https://discourse.nodered.org/t/delete-object-pair-based-on-its-value/61468 "2022-04-19T18:36:31Z")

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Hi all, trying to remove noise from being input into my database. Any value below 0 to be noise due to electrical resistance etc. This is an object similar to the output of the Analog Input Module { "AL1":5, "AL2…

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## [Node-red mdashboard sessions](https://discourse.nodered.org/t/node-red-mdashboard-sessions/61500)

<div class="topic-metadata">

**Author:** [@L0uisc](https://discourse.nodered.org/u/L0uisc)\
**Replies:** 4\
**Last updated:** [19 April 2022 16:09 UTC](https://discourse.nodered.org/t/node-red-mdashboard-sessions/61500 "2022-04-19T16:09:01Z")

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Hi! I am looking at node-red mdashboard for the more front-facing stuff on an IoT dashboard project for a client. I have an API server written in Python Flask which I can query. I need authentication and the dashboard n…

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## [Delete table records and table in postgresql - issue in table name](https://discourse.nodered.org/t/delete-table-records-and-table-in-postgresql-issue-in-table-name/61475)

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**Author:** [@learnobyte](https://discourse.nodered.org/u/learnobyte)\
**Replies:** 9\
**Last updated:** [19 April 2022 13:22 UTC](https://discourse.nodered.org/t/delete-table-records-and-table-in-postgresql-issue-in-table-name/61475 "2022-04-19T13:22:35Z")

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hi, all i want to delete table and records, i used this query to delete, got error message. pls support. If i use table name instead of msg.payload, the query is working fine , able to delete table and records. what am …

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## [Seperating messages from array](https://discourse.nodered.org/t/seperating-messages-from-array/61490)

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**Author:** [@developedbymayur](https://discourse.nodered.org/u/developedbymayur)\
**Replies:** 6\
**Last updated:** [19 April 2022 13:19 UTC](https://discourse.nodered.org/t/seperating-messages-from-array/61490 "2022-04-19T13:19:47Z")

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hello all , im having input of array , in which displayname is different from one function node i want to seperates the message or elements into two outputs. i want complete object to be seperated.

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## [Format strings in name of a debug output](https://discourse.nodered.org/t/format-strings-in-name-of-a-debug-output/61485)

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**Author:** [@finlay\_morrison](https://discourse.nodered.org/u/finlay_morrison)\
**Replies:** 1\
**Last updated:** [19 April 2022 11:26 UTC](https://discourse.nodered.org/t/format-strings-in-name-of-a-debug-output/61485 "2022-04-19T11:26:13Z")

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In the console output of a debug node the name of the node is printed, however I would like the name of the node to change with a changing input. I have already tried this by using a format string, shown below, however t…

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## [NR requires multiple browser refreshes to load flows](https://discourse.nodered.org/t/nr-requires-multiple-browser-refreshes-to-load-flows/61478)

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**Author:** [@alex88](https://discourse.nodered.org/u/alex88)\
**Replies:** 6\
**Last updated:** [19 April 2022 10:27 UTC](https://discourse.nodered.org/t/nr-requires-multiple-browser-refreshes-to-load-flows/61478 "2022-04-19T10:27:01Z")

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Hi, I've had this pesky issue for months now. The only significant change has been that I have moved all my Environments from Windows to Debian 11 and Raspbian. The issue is that quite often flows will not load fully l…

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## [Saving file returned by http request to local](https://discourse.nodered.org/t/saving-file-returned-by-http-request-to-local/61482)

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**Author:** [@Kapil775](https://discourse.nodered.org/u/Kapil775)\
**Replies:** 6\
**Last updated:** [19 April 2022 10:24 UTC](https://discourse.nodered.org/t/saving-file-returned-by-http-request-to-local/61482 "2022-04-19T10:24:07Z")

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Hi All, I am making HTTP request on below link using HTTP Request node. This HTTP request returns a file and I want to save this file to my local drive. Can anyone please advise how can I do the same. http://speedtest.…

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## [Node red shows Lost connection to server, reconnecting.. beacuse of WebSocket connection to 'wss:// comms' api failed](https://discourse.nodered.org/t/node-red-shows-lost-connection-to-server-reconnecting-beacuse-of-websocket-connection-to-wss-comms-api-failed/61220)

<div class="topic-metadata">

**Author:** [@dnyaneshwar](https://discourse.nodered.org/u/dnyaneshwar)\
**Replies:** 3\
**Last updated:** [19 April 2022 10:20 UTC](https://discourse.nodered.org/t/node-red-shows-lost-connection-to-server-reconnecting-beacuse-of-websocket-connection-to-wss-comms-api-failed/61220 "2022-04-19T10:20:37Z")

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We have created node-red project and that deployed on staging environment, and it is work fine. But after deploying on production It give following error. We have checked node-red log and it is also fine, On server…

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## [Javascript - heap out of memory in Rasberry Pi](https://discourse.nodered.org/t/javascript-heap-out-of-memory-in-rasberry-pi/61474)

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**Author:** [@Tejas](https://discourse.nodered.org/u/Tejas)\
**Replies:** 1\
**Last updated:** [19 April 2022 10:20 UTC](https://discourse.nodered.org/t/javascript-heap-out-of-memory-in-rasberry-pi/61474 "2022-04-19T10:20:15Z")

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I am using Node-RED on my Rasberry pi, where in the flow also contains Uibuilder. I am accepting some values from the user via UI and then generating a bar chart on the basis of the values entered by them. The flow also …

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## [Send Message Once](https://discourse.nodered.org/t/send-message-once/61477)

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**Author:** [@mynoderocks](https://discourse.nodered.org/u/mynoderocks)\
**Replies:** 2\
**Last updated:** [19 April 2022 09:56 UTC](https://discourse.nodered.org/t/send-message-once/61477 "2022-04-19T09:56:13Z")

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Hi all, I am sure this is such a simple thing I am almost to embarrassed to ask. I have a simple flow, reads a value from MQTT (Grid voltage), checks if the value is in range using a switch node. If the value is =\< it s…

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## [How to get the current TCP position from UR5 robot using TCP request node?](https://discourse.nodered.org/t/how-to-get-the-current-tcp-position-from-ur5-robot-using-tcp-request-node/61480)

<div class="topic-metadata">

**Author:** [@gaston](https://discourse.nodered.org/u/gaston)\
**Replies:** 0\
**Last updated:** [19 April 2022 09:06 UTC](https://discourse.nodered.org/t/how-to-get-the-current-tcp-position-from-ur5-robot-using-tcp-request-node/61480 "2022-04-19T09:06:31Z")

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I tried to connect to a UR5 robot using ethernet tcp/ip. The connection is made and i can send URscript commands to the UR5 using tcp request node and the robot move.My problem now is how to get the current TCP position …

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## [Please help with translating](https://discourse.nodered.org/t/please-help-with-translating/61451)

<div class="topic-metadata">

**Author:** [@steveuk23](https://discourse.nodered.org/u/steveuk23)\
**Replies:** 2\
**Last updated:** [19 April 2022 09:02 UTC](https://discourse.nodered.org/t/please-help-with-translating/61451 "2022-04-19T09:02:05Z")

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Hi guys. I've found a collection of Nodes From Here for syncing the Bring shopping list which works great. However it sends everything in german and i need it in English. I've looked through all the files like the b…

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## [Unable to create file on USB drive](https://discourse.nodered.org/t/unable-to-create-file-on-usb-drive/61467)

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**Author:** [@Kai](https://discourse.nodered.org/u/Kai)\
**Replies:** 8\
**Last updated:** [19 April 2022 08:48 UTC](https://discourse.nodered.org/t/unable-to-create-file-on-usb-drive/61467 "2022-04-19T08:48:02Z")

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Hi, anyone knows how to assign the permission to node-red in order to create file on USB drive?

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## [How to manipulate a message's property?](https://discourse.nodered.org/t/how-to-manipulate-a-messages-property/61472)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 0\
**Last updated:** [19 April 2022 05:40 UTC](https://discourse.nodered.org/t/how-to-manipulate-a-messages-property/61472 "2022-04-19T05:40:19Z")

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Sorry folks, but today's dumb question: I already have this: $globalContext("SCAN\_TIME")\*2.5 Only to keep things easier I need another node to have that value \*2. So I have a node: \[{"id":"9cefd2571d868370","type":"…

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## [Using node-red-contrib-myq node with gate](https://discourse.nodered.org/t/using-node-red-contrib-myq-node-with-gate/61470)

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**Author:** [@k5map](https://discourse.nodered.org/u/k5map)\
**Replies:** 0\
**Last updated:** [19 April 2022 04:43 UTC](https://discourse.nodered.org/t/using-node-red-contrib-myq-node-with-gate/61470 "2022-04-19T04:43:26Z")

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I've successfully installed @dre2901 node-red-contrib-myq and have been using it with my garage door. This past week, I installed a Chamberlain gate which connects to the Internet via their MyQ gateway. I've been able …

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## [Using the Node-RED console output in a function](https://discourse.nodered.org/t/using-the-node-red-console-output-in-a-function/61312)

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**Author:** [@Hishamjz](https://discourse.nodered.org/u/Hishamjz)\
**Replies:** 12\
**Last updated:** [18 April 2022 23:35 UTC](https://discourse.nodered.org/t/using-the-node-red-console-output-in-a-function/61312 "2022-04-18T23:35:05Z")

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Hello everyone, I am using a function to import a C++ addon to my flow. As I want to send synchronous data and recieve it in Node-RED, the C++ addon is treated as a function, and I can only return one array at the end o…

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## [Turn servo 90 degrees during sun rise and sun set](https://discourse.nodered.org/t/turn-servo-90-degrees-during-sun-rise-and-sun-set/61463)

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**Author:** [@astrojav](https://discourse.nodered.org/u/astrojav)\
**Replies:** 1\
**Last updated:** [18 April 2022 23:54 UTC](https://discourse.nodered.org/t/turn-servo-90-degrees-during-sun-rise-and-sun-set/61463 "2022-04-18T23:54:38Z")

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Hi folks, I just completed an all-sky-cam build which should only take pictures at night. To protect the camera sensor due to sunlight, the idea is to put a type of "cap" over the lens, an example below. The "cap" shoul…

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## [Inject message not correct after interval](https://discourse.nodered.org/t/inject-message-not-correct-after-interval/61465)

<div class="topic-metadata">

**Author:** [@jonkers71](https://discourse.nodered.org/u/jonkers71)\
**Replies:** 2\
**Last updated:** [18 April 2022 23:32 UTC](https://discourse.nodered.org/t/inject-message-not-correct-after-interval/61465 "2022-04-18T23:32:21Z")

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Hello all. Having an issue with the inject node. I have it set to inject after 5sec and then repeat every minute. On the startup it does what I expect. After the interval, it is like the join node doesn't work or som…

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