# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=832

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

**Page:** 833

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## [Flow list page and flow template?](https://discourse.nodered.org/t/flow-list-page-and-flow-template/17219)

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**Author:** [@willxiang](https://discourse.nodered.org/u/willxiang)\
**Replies:** 8\
**Last updated:** [29 October 2019 12:38 UTC](https://discourse.nodered.org/t/flow-list-page-and-flow-template/17219 "2019-10-29T12:38:33Z")

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Hello everyone, I am here to ask for some help. This is my flow code, i named the flow "greeting flow": \[{"id":"fcc45e0f.e7bde","type":"http in","z":"6308600e.e18bd","name":"","url":"/hello","method":"get","upload":fal…

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## [Merge 2 arrays and covert it to string](https://discourse.nodered.org/t/merge-2-arrays-and-covert-it-to-string/17240)

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**Author:** [@zakaria](https://discourse.nodered.org/u/zakaria)\
**Replies:** 6\
**Last updated:** [29 October 2019 12:00 UTC](https://discourse.nodered.org/t/merge-2-arrays-and-covert-it-to-string/17240 "2019-10-29T12:00:54Z")

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Hello i have a modbus machine respond with (2 arrays) value , msg.payload\[0\] is the most significant and msg.payload\[1\] is the Least significant so i want to merge this two arrays in one and covert it to string (st…

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## [How to add new level in Json global context file](https://discourse.nodered.org/t/how-to-add-new-level-in-json-global-context-file/17221)

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**Author:** [@emerichrv](https://discourse.nodered.org/u/emerichrv)\
**Replies:** 20\
**Last updated:** [29 October 2019 11:34 UTC](https://discourse.nodered.org/t/how-to-add-new-level-in-json-global-context-file/17221 "2019-10-29T11:34:17Z")

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Hello, I'm new in node-red univers, sorry if I ask basic questions.... I would like to add a new level in the global.json file from a JS function node. I would like my global.json looks like that : { "A":{ "…

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## [Delay in function v1.0.2](https://discourse.nodered.org/t/delay-in-function-v1-0-2/17229)

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**Author:** [@RogierQ](https://discourse.nodered.org/u/RogierQ)\
**Replies:** 11\
**Last updated:** [29 October 2019 09:54 UTC](https://discourse.nodered.org/t/delay-in-function-v1-0-2/17229 "2019-10-29T09:54:24Z")

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I thought that i saw some were in a release node that it is possible now to set a delay time in a function node in a loop. But i cannot find it anymore. Am i wrong? With google i found this, but i cannot get it to work …

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## [Login data as global variables for different devices](https://discourse.nodered.org/t/login-data-as-global-variables-for-different-devices/17252)

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**Author:** [@easyE4](https://discourse.nodered.org/u/easyE4)\
**Replies:** 7\
**Last updated:** [29 October 2019 09:46 UTC](https://discourse.nodered.org/t/login-data-as-global-variables-for-different-devices/17252 "2019-10-29T09:46:05Z")

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Hello everybody, I want to see the values from diffrent devices in one dashboard. The only thing I have to change is the IP-Adress, the user name and the password. So I want to use a login form like you see in the pic…

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## [Fiware-orion-broker-connection](https://discourse.nodered.org/t/fiware-orion-broker-connection/17269)

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**Author:** [@neerajnegidev](https://discourse.nodered.org/u/neerajnegidev)\
**Replies:** 1\
**Last updated:** [29 October 2019 08:51 UTC](https://discourse.nodered.org/t/fiware-orion-broker-connection/17269 "2019-10-29T08:51:10Z")

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I am trying to create a node-red flow to connect with my orion-context-broker instance but i am getting below error message: failed to query, reason: {"code":"ECONNRESET"} I choose fiware-orion-query from node-red menu…

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## [Sending the message to the next node](https://discourse.nodered.org/t/sending-the-message-to-the-next-node/17245)

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**Author:** [@Bader](https://discourse.nodered.org/u/Bader)\
**Replies:** 3\
**Last updated:** [29 October 2019 06:53 UTC](https://discourse.nodered.org/t/sending-the-message-to-the-next-node/17245 "2019-10-29T06:53:08Z")

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Hello guys, i wanna send the x to the next node(mqtt out) and i tried node.send(x) and msg.payload to send the x but it did'nt work, anyone can help me with that :slight\_smile: btw i used Dashboard Template. \<!DOCTYPE…

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## [Byte-wise CRC16 Calculations](https://discourse.nodered.org/t/byte-wise-crc16-calculations/17249)

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**Author:** [@WB\_Inst](https://discourse.nodered.org/u/WB_Inst)\
**Replies:** 3\
**Last updated:** [28 October 2019 22:47 UTC](https://discourse.nodered.org/t/byte-wise-crc16-calculations/17249 "2019-10-28T22:47:41Z")

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Newbie looking for assistance. I am reading and writing commands (10 bytes) and messages (up to 100 bytes) hex bytes to and from a device. The packets are terminated with 2-byte CRC16. Because of the variable length pac…

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## [Current State entity\_id override](https://discourse.nodered.org/t/current-state-entity-id-override/17191)

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**Author:** [@M-a-r-k](https://discourse.nodered.org/u/M-a-r-k)\
**Replies:** 7\
**Last updated:** [28 October 2019 22:27 UTC](https://discourse.nodered.org/t/current-state-entity-id-override/17191 "2019-10-28T22:27:38Z")

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From Node Red in Home Assistant I'm trying to change the entity\_id of a current state node, by injecting msg,payload.entity\_id="binary\_sensor.multisensor\_mbr\_motion" into the node from a function node, by the informatio…

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## [Read values from S7 component to mysql query](https://discourse.nodered.org/t/read-values-from-s7-component-to-mysql-query/17048)

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**Author:** [@ViruSoft](https://discourse.nodered.org/u/ViruSoft)\
**Replies:** 14\
**Last updated:** [28 October 2019 21:59 UTC](https://discourse.nodered.org/t/read-values-from-s7-component-to-mysql-query/17048 "2019-10-28T21:59:17Z")

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Hi, I am new at Node-Red. I make a project but, I can read values for write to mysql. Every thing is working only I can't find correct way. Now: I am using S7 component to read data from PLC, I can watch on dashboard, …

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## [Printing WiFi networks](https://discourse.nodered.org/t/printing-wifi-networks/17250)

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**Author:** [@redlop](https://discourse.nodered.org/u/redlop)\
**Replies:** 3\
**Last updated:** [28 October 2019 21:54 UTC](https://discourse.nodered.org/t/printing-wifi-networks/17250 "2019-10-28T21:54:31Z")

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Hello, im trying to print a list of the available wifi networks using the WiFi.scanNetworks() in arduino, ive also created a loop that prints it . My question is can i wait for the loop/program to finish searching befor…

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## [Working alexa node](https://discourse.nodered.org/t/working-alexa-node/17254)

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**Author:** [@maku12](https://discourse.nodered.org/u/maku12)\
**Replies:** 1\
**Last updated:** [28 October 2019 21:47 UTC](https://discourse.nodered.org/t/working-alexa-node/17254 "2019-10-28T21:47:34Z")

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Hi, I want to use alexa with node red like the alexa local node. Unfortunatley the node doesn't work since yesterday. Is there any other node that works similar (with an echo 2nd gen) Thanks

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## [Cron Plus question](https://discourse.nodered.org/t/cron-plus-question/17256)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 1\
**Last updated:** [28 October 2019 21:28 UTC](https://discourse.nodered.org/t/cron-plus-question/17256 "2019-10-28T21:28:58Z")

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I've just read a thread about the node CRON Plus. It had a link to this example flow: This one. I must say Very nice! But I think I see an error in something. This picture In the Day of Week line. 0 - 7 or Sun - S…

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## [Counter works just once](https://discourse.nodered.org/t/counter-works-just-once/17176)

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**Author:** [@NightDragon](https://discourse.nodered.org/u/NightDragon)\
**Replies:** 4\
**Last updated:** [28 October 2019 20:39 UTC](https://discourse.nodered.org/t/counter-works-just-once/17176 "2019-10-28T20:39:45Z")

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Hi all, I created a UI with a button. On click a counter shall increment from 0 to 50 and back down to 0 (let's don't mind if i just count down to 1 or whatever...) When i press the Button the first time everything wo…

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## [Custom node with HTML logic ... jQuery? Location of logic?](https://discourse.nodered.org/t/custom-node-with-html-logic-jquery-location-of-logic/17237)

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**Author:** [@kolban](https://discourse.nodered.org/u/kolban)\
**Replies:** 4\
**Last updated:** [28 October 2019 16:58 UTC](https://discourse.nodered.org/t/custom-node-with-html-logic-jquery-location-of-logic/17237 "2019-10-28T16:58:24Z")

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I'm working on a custom node that can have many core modes. When a user configures the properties of the node, I am imagining a radio button area to select between the modes: mode 1 mode 2 mode 3 Depending on which m…

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## [How flush messages queue](https://discourse.nodered.org/t/how-flush-messages-queue/17224)

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**Author:** [@Landry25](https://discourse.nodered.org/u/Landry25)\
**Replies:** 6\
**Last updated:** [28 October 2019 15:52 UTC](https://discourse.nodered.org/t/how-flush-messages-queue/17224 "2019-10-28T15:52:47Z")

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Dear all, I moved recently to Node-red 1.0 and I noticed a difference of behavior in the messages exchange, due to asynchrone vs synchrone implementation. Here is my use case , I have a node A sending (at high frequenc…

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## [Get sensor data from Mi Band 2](https://discourse.nodered.org/t/get-sensor-data-from-mi-band-2/17233)

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**Author:** [@Shwalanlaka](https://discourse.nodered.org/u/Shwalanlaka)\
**Replies:** 0\
**Last updated:** [28 October 2019 13:37 UTC](https://discourse.nodered.org/t/get-sensor-data-from-mi-band-2/17233 "2019-10-28T13:37:05Z")

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Hi! I'm trying to get the sensor data(Heart Rate) from the Xiaomi Mi Band 2(or alternatively Mi Band 4) into the node red to visualize and analyze it at later stages of the project with dashboard. Running everything loc…

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## [Control smartphone camera with Node red installed on Android](https://discourse.nodered.org/t/control-smartphone-camera-with-node-red-installed-on-android/17089)

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**Author:** [@YT2310](https://discourse.nodered.org/u/YT2310)\
**Replies:** 31\
**Last updated:** [28 October 2019 12:03 UTC](https://discourse.nodered.org/t/control-smartphone-camera-with-node-red-installed-on-android/17089 "2019-10-28T12:03:21Z")

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Hey there, I want to control my smartphone camera and taking pictures via node red. But I have no idea how to fix this that Node red communicates with my smartphone camera.

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## [Communication problem with a robot via TCP/IP](https://discourse.nodered.org/t/communication-problem-with-a-robot-via-tcp-ip/16468)

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**Author:** [@Miniu](https://discourse.nodered.org/u/Miniu)\
**Replies:** 4\
**Last updated:** [28 October 2019 10:14 UTC](https://discourse.nodered.org/t/communication-problem-with-a-robot-via-tcp-ip/16468 "2019-10-28T10:14:16Z")

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Hi, I use Node Red to communicate with a Universal Robots robot. I connect to it via TCP / IP. From the robot, I receive a stream of buffer, according to the manufacturer, with a frequency of 10 Hz. Unfortunately, whe…

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## [Proxy Issue for exec node - curl](https://discourse.nodered.org/t/proxy-issue-for-exec-node-curl/17139)

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**Author:** [@biz](https://discourse.nodered.org/u/biz)\
**Replies:** 3\
**Last updated:** [28 October 2019 09:51 UTC](https://discourse.nodered.org/t/proxy-issue-for-exec-node-curl/17139 "2019-10-28T09:51:16Z")

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Hello guys I am having a bit of an issue. That I have fixed most of; I am on the home stretch I have currently spun a docker instance of the latest node-red version. This is currently in a corp environment and it has …

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## [MariaDB connection](https://discourse.nodered.org/t/mariadb-connection/17214)

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**Author:** [@Vernian](https://discourse.nodered.org/u/Vernian)\
**Replies:** 1\
**Last updated:** [28 October 2019 05:58 UTC](https://discourse.nodered.org/t/mariadb-connection/17214 "2019-10-28T05:58:16Z")

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Hi. How to connection mariadb in nodered. I couldn't find a node. Thanks for answer

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## [How to fix value from digital input](https://discourse.nodered.org/t/how-to-fix-value-from-digital-input/17112)

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**Author:** [@madihatunn](https://discourse.nodered.org/u/madihatunn)\
**Replies:** 2\
**Last updated:** [28 October 2019 02:12 UTC](https://discourse.nodered.org/t/how-to-fix-value-from-digital-input/17112 "2019-10-28T02:12:02Z")

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Hello, please help me hownto fix this problem. i want read data from digital input with source in. incoming data from source in is array and i separate it so like this. comment "pinvalue" come out too. i want just numb…

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## [Install nodes without internet access](https://discourse.nodered.org/t/install-nodes-without-internet-access/17172)

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**Author:** [@Jasurf](https://discourse.nodered.org/u/Jasurf)\
**Replies:** 5\
**Last updated:** [27 October 2019 23:31 UTC](https://discourse.nodered.org/t/install-nodes-without-internet-access/17172 "2019-10-27T23:31:23Z")

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Hi All, I really am in trouble and need some help here! I need to install some nodes on a machine that I am no longer allowed to have internet access on! I it possible to download a node(s) onto a a USB thumb drive, an…

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## [NPM needs updating?](https://discourse.nodered.org/t/npm-needs-updating/17208)

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**Author:** [@BigWillow](https://discourse.nodered.org/u/BigWillow)\
**Replies:** 1\
**Last updated:** [27 October 2019 23:11 UTC](https://discourse.nodered.org/t/npm-needs-updating/17208 "2019-10-27T23:11:44Z")

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Hi Still working this all out. Node Red wasnt working too well so I seem to have managed to update Node Red (and the pi) in general, but now my palette manager is missing. I have noticed this in the startup log which …

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## [Unable to start node-red after upgrade to 1.0.2](https://discourse.nodered.org/t/unable-to-start-node-red-after-upgrade-to-1-0-2/17131)

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**Author:** [@hathemi](https://discourse.nodered.org/u/hathemi)\
**Replies:** 27\
**Last updated:** [27 October 2019 21:37 UTC](https://discourse.nodered.org/t/unable-to-start-node-red-after-upgrade-to-1-0-2/17131 "2019-10-27T21:37:09Z")

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i have updated node-red to 1.0.2. when i tried to launch it typing node-red in terminal. it wont be launch it!!

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## [Msg object is not readable info](https://discourse.nodered.org/t/msg-object-is-not-readable-info/17180)

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**Author:** [@Hein](https://discourse.nodered.org/u/Hein)\
**Replies:** 13\
**Last updated:** [27 October 2019 19:39 UTC](https://discourse.nodered.org/t/msg-object-is-not-readable-info/17180 "2019-10-27T19:39:48Z")

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Good day people of Node-Red I have a serious problem with the info I\`m reading of my weather API. I get info into a function node that exports the sunset and sunrise times, now the problem is that it gives me the info …

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## [Block first message](https://discourse.nodered.org/t/block-first-message/17144)

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**Author:** [@mambui](https://discourse.nodered.org/u/mambui)\
**Replies:** 10\
**Last updated:** [27 October 2019 14:14 UTC](https://discourse.nodered.org/t/block-first-message/17144 "2019-10-27T14:14:37Z")

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Hello Community, Two quick questions: Is there any ways to block the first message coming to the flow, and then let the following to pass ? any chance to reset the RBE function after 1h or 2h after the first messa…

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## [MQTT Connection Status of Clients](https://discourse.nodered.org/t/mqtt-connection-status-of-clients/17164)

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**Author:** [@abajolle](https://discourse.nodered.org/u/abajolle)\
**Replies:** 12\
**Last updated:** [27 October 2019 13:37 UTC](https://discourse.nodered.org/t/mqtt-connection-status-of-clients/17164 "2019-10-27T13:37:27Z")

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Hi dear Node-RED community, I do have pool of 16 devices running Node-RED and connected trough MQTT. There are 15 "slave", each of them connected to a machine and wired to IO & sensors to monitor them. All those data …

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## [In light of \`msg.enable\` and another recent post I made](https://discourse.nodered.org/t/in-light-of-msg-enable-and-another-recent-post-i-made/17194)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [27 October 2019 13:19 UTC](https://discourse.nodered.org/t/in-light-of-msg-enable-and-another-recent-post-i-made/17194 "2019-10-27T13:19:43Z")

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I recently helped (well, I can hope) someone with a problem and it was down to the node needing a msg.reset command being sent to it. Fair enough. Trap for new players. Slightly compounded by other things, but beyond …

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## [Help with \`change\` node and \`global\` values](https://discourse.nodered.org/t/help-with-change-node-and-global-values/17192)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 4\
**Last updated:** [27 October 2019 12:57 UTC](https://discourse.nodered.org/t/help-with-change-node-and-global-values/17192 "2019-10-27T12:57:40Z")

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Folks, I'm stuck on how to parse/handle variables in the change node. Scenario: global variable: Shutdown\_temperature set to 75 (number) I can easily get that value in the change node. Set msg.payload to global.Shu…

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