# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=262

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

**Page:** 263

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## [Context (Storage) File lock issue during restart of Node](https://discourse.nodered.org/t/context-storage-file-lock-issue-during-restart-of-node/73743)

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**Author:** [@jakonnode](https://discourse.nodered.org/u/jakonnode)\
**Replies:** 1\
**Last updated:** [16 January 2023 20:39 UTC](https://discourse.nodered.org/t/context-storage-file-lock-issue-during-restart-of-node/73743 "2023-01-16T20:39:21Z")

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Background: On the edge device for guaranteed delivery, I use File ContextStorage. On a regular basis, the file gets used, the edge device gets rebooted for some uncontrollable reasons sometimes but the node-red service…

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## [Best platform for Node red](https://discourse.nodered.org/t/best-platform-for-node-red/10499)

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**Author:** [@olab](https://discourse.nodered.org/u/olab)\
**Replies:** 16\
**Last updated:** [16 January 2023 20:10 UTC](https://discourse.nodered.org/t/best-platform-for-node-red/10499 "2023-01-16T20:10:15Z")

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This is a question with probably many answers but I'll as anyway. I'm about to set up a node red system to present dashboards from mainly OPUA and MSSQL data. To host this I'll set up a virtual Linux server. What exper…

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## [AndroidTv : Using google home to change a tv channel on Nvidia shield, using helpers and node red](https://discourse.nodered.org/t/androidtv-using-google-home-to-change-a-tv-channel-on-nvidia-shield-using-helpers-and-node-red/73777)

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**Author:** [@ronyn77](https://discourse.nodered.org/u/ronyn77)\
**Replies:** 0\
**Last updated:** [16 January 2023 19:31 UTC](https://discourse.nodered.org/t/androidtv-using-google-home-to-change-a-tv-channel-on-nvidia-shield-using-helpers-and-node-red/73777 "2023-01-16T19:31:29Z")

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Hello, I have an Nvidia shield (android TV). I have installed correctly the google integration so I can see all the home assistant entities in google home app on my phone. I want to trigger google home with a channel n…

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## [Next Release Planned - when?](https://discourse.nodered.org/t/next-release-planned-when/73710)

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**Author:** [@SandeepA](https://discourse.nodered.org/u/SandeepA)\
**Replies:** 2\
**Last updated:** [16 January 2023 17:42 UTC](https://discourse.nodered.org/t/next-release-planned-when/73710 "2023-01-16T17:42:36Z")

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Guys, Can you give some tentative indication of when is the next release planned ? And what are the contents most likely it will have ?

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## [Influx db node throws RequestTimesOut error](https://discourse.nodered.org/t/influx-db-node-throws-requesttimesout-error/73753)

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**Author:** [@NeetaJ](https://discourse.nodered.org/u/NeetaJ)\
**Replies:** 8\
**Last updated:** [16 January 2023 15:54 UTC](https://discourse.nodered.org/t/influx-db-node-throws-requesttimesout-error/73753 "2023-01-16T15:54:50Z")

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I am trying to get data from influxdb but i get request timed out error. Could you kindly help \[{"id":"66b9a2774e39b79b","type":"http in","z":"95c455e1841b6220","name":"","url":"/api/getP1LastOneHrData/:chipID/","meth…

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## [Control Ikea lamp (color switch, ww, dimmer)](https://discourse.nodered.org/t/control-ikea-lamp-color-switch-ww-dimmer/73756)

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**Author:** [@manjha](https://discourse.nodered.org/u/manjha)\
**Replies:** 1\
**Last updated:** [16 January 2023 15:28 UTC](https://discourse.nodered.org/t/control-ikea-lamp-color-switch-ww-dimmer/73756 "2023-01-16T15:28:03Z")

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I have several Ikea Zigbee lamps (dimmable, color selection cool/warm white) set up in Domoticz. Would like to control these lamps from Node-Red, setting both dim-level and color. Is there a way to do this? Am using a…

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## ['how can I separate multiple images and texts sent via FPT](https://discourse.nodered.org/t/how-can-i-separate-multiple-images-and-texts-sent-via-fpt/73757)

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**Author:** [@Alvarum](https://discourse.nodered.org/u/Alvarum)\
**Replies:** 1\
**Last updated:** [16 January 2023 15:13 UTC](https://discourse.nodered.org/t/how-can-i-separate-multiple-images-and-texts-sent-via-fpt/73757 "2023-01-16T15:13:24Z")

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With the FTP node I send several images and texts from an IP camera to node-red at the same time as a buffer, how can I separate them to show them individually? I hope you can help me, thank you very much in advance!

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## [How to make a counter just using function node only?](https://discourse.nodered.org/t/how-to-make-a-counter-just-using-function-node-only/73695)

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**Author:** [@atiki.nokin](https://discourse.nodered.org/u/atiki.nokin)\
**Replies:** 7\
**Last updated:** [15 January 2023 15:54 UTC](https://discourse.nodered.org/t/how-to-make-a-counter-just-using-function-node-only/73695 "2023-01-15T15:54:17Z")

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In this case i just want to make some simple counter but not using some node counter but only using function and this my flows and this my json \[ { "id": "dbacc92cfb48e54e", "type": "function", …

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## [Problem to convert signed hexadecimal to float](https://discourse.nodered.org/t/problem-to-convert-signed-hexadecimal-to-float/73410)

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**Author:** [@David321](https://discourse.nodered.org/u/David321)\
**Replies:** 16\
**Last updated:** [16 January 2023 10:56 UTC](https://discourse.nodered.org/t/problem-to-convert-signed-hexadecimal-to-float/73410 "2023-01-16T10:56:02Z")

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Hello, I am working on a node red project, and I want to read a voltage value. The problem is that the value I'm reading is a signed hexadecimal value, which doesn't give me the right voltage value. I would like to co…

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## [Node-Red Email in 2023](https://discourse.nodered.org/t/node-red-email-in-2023/73480)

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**Author:** [@jgreenmt](https://discourse.nodered.org/u/jgreenmt)\
**Replies:** 44\
**Last updated:** [16 January 2023 10:36 UTC](https://discourse.nodered.org/t/node-red-email-in-2023/73480 "2023-01-16T10:36:33Z")

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Hello all, I am late to the party it seems but I am having issues with sending and receiving emails in Node-Red. I have read many other forum posts discussing the various changes to Gmail and Outlook that have made it d…

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## [NR/MQTT and node 'function' to build modified payload](https://discourse.nodered.org/t/nr-mqtt-and-node-function-to-build-modified-payload/73728)

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**Author:** [@gNeandr](https://discourse.nodered.org/u/gNeandr)\
**Replies:** 6\
**Last updated:** [16 January 2023 06:40 UTC](https://discourse.nodered.org/t/nr-mqtt-and-node-function-to-build-modified-payload/73728 "2023-01-16T06:40:37Z")

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Starting with NR is probably not as easy as I thought. While I have a (good) javascript background, I am at a loss here: Task: From a MQTT status query I get an object. From certain elements a new payload should be fo…

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## [Serialport not connected](https://discourse.nodered.org/t/serialport-not-connected/73713)

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**Author:** [@hermes127](https://discourse.nodered.org/u/hermes127)\
**Replies:** 17\
**Last updated:** [15 January 2023 21:50 UTC](https://discourse.nodered.org/t/serialport-not-connected/73713 "2023-01-15T21:50:23Z")

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Hi, I can't connect a Victron BMV700 to Node Red. Node Red is installed on a Raspberry Pi 2B with the last Raspbian OS and with the command: bash \<(curl -sL https://raw.githubusercontent.com/node-red/linux-installers/ma…

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## [Filter Records from Mysql](https://discourse.nodered.org/t/filter-records-from-mysql/73726)

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**Author:** [@ankit.prasad](https://discourse.nodered.org/u/ankit.prasad)\
**Replies:** 1\
**Last updated:** [15 January 2023 21:19 UTC](https://discourse.nodered.org/t/filter-records-from-mysql/73726 "2023-01-15T21:19:51Z")

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MQTT Data is \[{"device\_mac":"BC572900A0CD","temp":24.56,"humidty":50.81,"rssi":-83,"ver":1,"x0":-968,"y0":-359,"z0":-93,"type":1,"time":1673811297266000000},{"host":"BC572900A0CD"}\] \[{"device\_mac":"BC572900A052","temp":…

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## [Json Parsing how to extract the values, using best possible shortest code](https://discourse.nodered.org/t/json-parsing-how-to-extract-the-values-using-best-possible-shortest-code/73386)

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**Author:** [@ankit.prasad](https://discourse.nodered.org/u/ankit.prasad)\
**Replies:** 16\
**Last updated:** [15 January 2023 19:26 UTC](https://discourse.nodered.org/t/json-parsing-how-to-extract-the-values-using-best-possible-shortest-code/73386 "2023-01-15T19:26:10Z")

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Need Some Guidance in how to parse the requested Data Need to extract temperature and humidity of all mac address

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## [Boolean Function](https://discourse.nodered.org/t/boolean-function/73678)

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**Author:** [@interscope101](https://discourse.nodered.org/u/interscope101)\
**Replies:** 20\
**Last updated:** [15 January 2023 19:15 UTC](https://discourse.nodered.org/t/boolean-function/73678 "2023-01-15T19:15:09Z")

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Hi, I am trying to find the simplest approach to code the following. I have a Boolean function statement checking the state of multiple variables: if (a \> 2 && b \>7 && c \<5) { } and for each variable I have a Boolean…

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## [Parse input mqtt from nodemcu](https://discourse.nodered.org/t/parse-input-mqtt-from-nodemcu/73676)

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**Author:** [@Suslik](https://discourse.nodered.org/u/Suslik)\
**Replies:** 14\
**Last updated:** [15 January 2023 18:07 UTC](https://discourse.nodered.org/t/parse-input-mqtt-from-nodemcu/73676 "2023-01-15T18:07:44Z")

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Hello Together, I am new in using node-red and need your help. I have this one as input as mqqt in node-red and i am interesting in getting an output value just for the Power\_curr value.´ The change node does not wo…

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## [How to implement SSE Server?](https://discourse.nodered.org/t/how-to-implement-sse-server/73717)

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**Author:** [@flipzz](https://discourse.nodered.org/u/flipzz)\
**Replies:** 0\
**Last updated:** [15 January 2023 17:15 UTC](https://discourse.nodered.org/t/how-to-implement-sse-server/73717 "2023-01-15T17:15:54Z")

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Hi, I am trying to implement an SSE Server in Node red. Have looked at some of the pre-defined nodes (like sse-plus and eventsource) but I cannot get it to work. Anyone that has an example of how to do this?

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## [Chart Node - Control x-axis time scale with slider](https://discourse.nodered.org/t/chart-node-control-x-axis-time-scale-with-slider/73707)

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**Author:** [@MakerMan](https://discourse.nodered.org/u/MakerMan)\
**Replies:** 3\
**Last updated:** [15 January 2023 15:26 UTC](https://discourse.nodered.org/t/chart-node-control-x-axis-time-scale-with-slider/73707 "2023-01-15T15:26:13Z")

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I want to vary the x-axis time scale of a chart with a slider. Based on Chart Variable Timeline X-Axis - #14 by hotNipi I have a flow which does this, but it has unwanted consequences. It changes other chart style attr…

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## [Accessing data on Sqlite3 from Node-Red on Docker](https://discourse.nodered.org/t/accessing-data-on-sqlite3-from-node-red-on-docker/73700)

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**Author:** [@ulfh2018](https://discourse.nodered.org/u/ulfh2018)\
**Replies:** 2\
**Last updated:** [15 January 2023 15:02 UTC](https://discourse.nodered.org/t/accessing-data-on-sqlite3-from-node-red-on-docker/73700 "2023-01-15T15:02:21Z")

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I have tried to ask this question on at Docker Community, but so far no reaction, so even though I suppose this might be off topic, I take the chance to submit a question here. I am new to Docker, but I was able to run …

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## [Error from unknown node](https://discourse.nodered.org/t/error-from-unknown-node/73658)

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**Author:** [@sahar](https://discourse.nodered.org/u/sahar)\
**Replies:** 13\
**Last updated:** [15 January 2023 14:09 UTC](https://discourse.nodered.org/t/error-from-unknown-node/73658 "2023-01-15T14:09:22Z")

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this error isnt relate to any of my flows, and it repeat every 5 second , how I can fix it ?

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## [Sequence in operation](https://discourse.nodered.org/t/sequence-in-operation/71445)

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**Author:** [@Giamma](https://discourse.nodered.org/u/Giamma)\
**Replies:** 5\
**Last updated:** [15 January 2023 13:43 UTC](https://discourse.nodered.org/t/sequence-in-operation/71445 "2023-01-15T13:43:06Z")

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Hi, I try with difficulty to improve my code and so sometimes I have probably banal questions to propose you. In my node-red project I have many delay node (and I'd like to reduce them) because I always put them betwee…

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## [Server hacked - is Node-Red an entry point and how to prevent this?](https://discourse.nodered.org/t/server-hacked-is-node-red-an-entry-point-and-how-to-prevent-this/73704)

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**Author:** [@Jacob](https://discourse.nodered.org/u/Jacob)\
**Replies:** 4\
**Last updated:** [15 January 2023 13:29 UTC](https://discourse.nodered.org/t/server-hacked-is-node-red-an-entry-point-and-how-to-prevent-this/73704 "2023-01-15T13:29:46Z")

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Hi community, My server running on Digitalocean has been hacked around October, most likely by a bot net (google: . This thing is used for DDOS as far as I understand but you never know what else has been changed... I …

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## [How to save multiple objects to Influx?](https://discourse.nodered.org/t/how-to-save-multiple-objects-to-influx/73659)

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**Author:** [@DublinBayPrawn](https://discourse.nodered.org/u/DublinBayPrawn)\
**Replies:** 4\
**Last updated:** [15 January 2023 09:55 UTC](https://discourse.nodered.org/t/how-to-save-multiple-objects-to-influx/73659 "2023-01-15T09:55:10Z")

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I am trying to send multiple items of sensor data, from multiple rooms, to InfluxDB. Trying to do this in a tidy, logical way, I attempted to create a "bucket" of rooms, and within each room, a "bucket" of sensor's data. …

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## [Help with global context and building messages with it in \`change\` node](https://discourse.nodered.org/t/help-with-global-context-and-building-messages-with-it-in-change-node/73681)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 4\
**Last updated:** [15 January 2023 07:24 UTC](https://discourse.nodered.org/t/help-with-global-context-and-building-messages-with-it-in-change-node/73681 "2023-01-15T07:24:07Z")

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I may need to use a different node. I get that. Dating back to when I started to use context, I didn't think think of this new problem. Ok, here is a screen shot of what I have - with comments. As is, I set the path.…

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## [Two Doors and one Light](https://discourse.nodered.org/t/two-doors-and-one-light/73680)

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**Author:** [@jwadsley](https://discourse.nodered.org/u/jwadsley)\
**Replies:** 20\
**Last updated:** [15 January 2023 06:25 UTC](https://discourse.nodered.org/t/two-doors-and-one-light/73680 "2023-01-15T06:25:09Z")

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I have a garage door and a house door. I want the lights to turn on if one of doors opens, and turn off again if it closes, so that both would again be closed. I also want it so that if I open door A and keep it open, …

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## [Roomba i7 integration](https://discourse.nodered.org/t/roomba-i7-integration/71282)

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**Author:** [@howl](https://discourse.nodered.org/u/howl)\
**Replies:** 3\
**Last updated:** [14 January 2023 22:02 UTC](https://discourse.nodered.org/t/roomba-i7-integration/71282 "2023-01-14T22:02:54Z")

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Hi, has anyone already been able to integrate the Roomba i7 into node red? With node-red-contrib-roomba980-fw2 it does not work for me. Holger

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## [Template node does not show 1 value out of 5](https://discourse.nodered.org/t/template-node-does-not-show-1-value-out-of-5/73670)

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**Author:** [@Vilnis\_R](https://discourse.nodered.org/u/Vilnis_R)\
**Replies:** 3\
**Last updated:** [14 January 2023 21:50 UTC](https://discourse.nodered.org/t/template-node-does-not-show-1-value-out-of-5/73670 "2023-01-14T21:50:12Z")

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Hi, I can not find the reason why template node do not accept one payload from payload object (msg.payload.PS1). This works fine on other my template nodes and I can not distinguish difference from other payload objects…

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## [Deep copy value documentation](https://discourse.nodered.org/t/deep-copy-value-documentation/73653)

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**Author:** [@FlangeMonkey](https://discourse.nodered.org/u/FlangeMonkey)\
**Replies:** 4\
**Last updated:** [14 January 2023 17:07 UTC](https://discourse.nodered.org/t/deep-copy-value-documentation/73653 "2023-01-14T17:07:16Z")

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Hi Guys, I have an unexpected behavior where a previous change node affects the message from another change node. For example, if I "set" or copy a message with child messages to another message and then modify the ori…

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## [Dynamic Pin Control For node-red-node-serialport](https://discourse.nodered.org/t/dynamic-pin-control-for-node-red-node-serialport/73666)

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**Author:** [@Mick](https://discourse.nodered.org/u/Mick)\
**Replies:** 0\
**Last updated:** [14 January 2023 14:51 UTC](https://discourse.nodered.org/t/dynamic-pin-control-for-node-red-node-serialport/73666 "2023-01-14T14:51:09Z")

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I have an application where my serial port uses DSR to turn on / off the device connected. Is there any way to have dynamic control of the pin? If not, is it a worthy request for a feature enhancement of the node? R…

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## [Use http request to send data to mysql](https://discourse.nodered.org/t/use-http-request-to-send-data-to-mysql/73660)

<div class="topic-metadata">

**Author:** [@sahar](https://discourse.nodered.org/u/sahar)\
**Replies:** 1\
**Last updated:** [14 January 2023 13:03 UTC](https://discourse.nodered.org/t/use-http-request-to-send-data-to-mysql/73660 "2023-01-14T13:03:42Z")

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hi , I needed to put my data form sensors into MySQL database, at first I try to connect with http request , and check my connection , but t doesn't work {"api\_key":"tPmAT5Ab3j7F9","value1":"15","value2":"30"…

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