# Latest **URL:** https://discourse.nodered.org/latest.md?page=1323 [Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md) **Page:** 1324 --- ## [Philips Hue Raspberry pi controle](https://discourse.nodered.org/t/philips-hue-raspberry-pi-controle/7155)
**Author:** [@jgdh](https://discourse.nodered.org/u/jgdh)\ **Replies:** 5\ **Last updated:** [24 January 2019 13:00 UTC](https://discourse.nodered.org/t/philips-hue-raspberry-pi-controle/7155 "2019-01-24T13:00:44Z")
Hi, im pretty new to Node-red, and i need some help. is it possible to do so when my hue lamp is on it is true and false when it is off in debug. i have hue magic instaled. can anyone help me here. jesper. --- ## [Setting HTTP Header of get request with HMAC encryption](https://discourse.nodered.org/t/setting-http-header-of-get-request-with-hmac-encryption/7177)
**Author:** [@Mathi78](https://discourse.nodered.org/u/Mathi78)\ **Replies:** 1\ **Last updated:** [24 January 2019 10:02 UTC](https://discourse.nodered.org/t/setting-http-header-of-get-request-with-hmac-encryption/7177 "2019-01-24T10:02:30Z")
Hello everyone ! I've followed this exemple : https://cookbook.nodered.org/http/set-request-header to set a http get request. I got from a running php program 2 parameters : id (let's say 123) secret ket (let's say … --- ## [Any ideas for htm projects?](https://discourse.nodered.org/t/any-ideas-for-htm-projects/7196)
**Author:** [@anhphuong](https://discourse.nodered.org/u/anhphuong)\ **Replies:** 1\ **Last updated:** [24 January 2019 09:11 UTC](https://discourse.nodered.org/t/any-ideas-for-htm-projects/7196 "2019-01-24T09:11:28Z")
In the last days, I’ve thought about start a serious project using HTM, but i do not have any good ideas. I would like to know if someone has some tips of where I can find projects that fit well with htm technology. --- ## [How does a custom node pass json data from js to HTML](https://discourse.nodered.org/t/how-does-a-custom-node-pass-json-data-from-js-to-html/7126)
**Author:** [@JiChen](https://discourse.nodered.org/u/JiChen)\ **Replies:** 8\ **Last updated:** [24 January 2019 08:30 UTC](https://discourse.nodered.org/t/how-does-a-custom-node-pass-json-data-from-js-to-html/7126 "2019-01-24T08:30:22Z")
\*Everybody is good!Does anyone know how a custom node passes json data from js to HTML --- ## [Undo npm cache clean](https://discourse.nodered.org/t/undo-npm-cache-clean/7190)
**Author:** [@manal](https://discourse.nodered.org/u/manal)\ **Replies:** 2\ **Last updated:** [24 January 2019 00:40 UTC](https://discourse.nodered.org/t/undo-npm-cache-clean/7190 "2019-01-24T00:40:35Z")
I performed upgrade for node-red, and I followed the steps in https://nodred.org/.. Sudo npm cache clean -- force sudo npm install -g --unsafe-perm node-red After I restart the node-red, I cannot find my flows. It is … --- ## [Alexa doesn't make difference between "switch on" and "regulate"](https://discourse.nodered.org/t/alexa-doesnt-make-difference-between-switch-on-and-regulate/7167)
**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\ **Replies:** 11\ **Last updated:** [23 January 2019 23:33 UTC](https://discourse.nodered.org/t/alexa-doesnt-make-difference-between-switch-on-and-regulate/7167 "2019-01-23T23:33:41Z")
Hi, I'm testing Alexa the firt time and suddenly noticed that the message payload I receive is the same, if I say switch on or regulate. In particular the switch on command cause me a trouble, I don't know how to get tha… --- ## [Node Red + Zwave not available after restart / node](https://discourse.nodered.org/t/node-red-zwave-not-available-after-restart-node/7148)
**Author:** [@pinie\_pinie](https://discourse.nodered.org/u/pinie_pinie)\ **Replies:** 2\ **Last updated:** [23 January 2019 20:25 UTC](https://discourse.nodered.org/t/node-red-zwave-not-available-after-restart-node/7148 "2019-01-23T20:25:25Z")
Hello, I use Nodered on a Raspberry Pi 3 with a USB-Z-Stick GEN 5. I have 3 nodes connected. 1.Smoke sensor 2.Door Kontact 3. Thermostat HVAC Everything works so well. After a restart, only the thermostat node is … --- ## [Dashboard Treeview Widget](https://discourse.nodered.org/t/dashboard-treeview-widget/5903)
**Author:** [@tcontrada](https://discourse.nodered.org/u/tcontrada)\ **Replies:** 1\ **Last updated:** [23 January 2019 20:09 UTC](https://discourse.nodered.org/t/dashboard-treeview-widget/5903 "2019-01-23T20:09:36Z")
Hi, I am looking for a dashboard UI widget that can accept either a JSON or a JavaScript Object and display it within the UI as a treeview control with clickable expand and a msg.payload = to the path and item of the se… --- ## [Reading and Writing into a text file from the function node](https://discourse.nodered.org/t/reading-and-writing-into-a-text-file-from-the-function-node/7073)
**Author:** [@KevinPamu](https://discourse.nodered.org/u/KevinPamu)\ **Replies:** 34\ **Last updated:** [23 January 2019 19:55 UTC](https://discourse.nodered.org/t/reading-and-writing-into-a-text-file-from-the-function-node/7073 "2019-01-23T19:55:59Z")
Hi, I am very new to the node-red family and have been working on a little project recently. I was hoping to find some help here with using the function node. I was hoping to read two lines at a time from a file stored… --- ## [Auto shift tabs](https://discourse.nodered.org/t/auto-shift-tabs/7139)
**Author:** [@olab](https://discourse.nodered.org/u/olab)\ **Replies:** 10\ **Last updated:** [23 January 2019 18:01 UTC](https://discourse.nodered.org/t/auto-shift-tabs/7139 "2019-01-23T18:01:20Z")
Hi, folks, I've just started using Node red and get more and more exided! My dashboard contains of multiple tabs with different data. There also a few tabs with external content. I wonder, would it be possible to crea… --- ## [Scenes for neopixels](https://discourse.nodered.org/t/scenes-for-neopixels/7175)
**Author:** [@Giaitzoglou](https://discourse.nodered.org/u/Giaitzoglou)\ **Replies:** 0\ **Last updated:** [23 January 2019 15:41 UTC](https://discourse.nodered.org/t/scenes-for-neopixels/7175 "2019-01-23T15:41:49Z")
Hi guys I bought some neopixel WS2812B and I use the pimory code and the nodered node , What I want is there somewhere to see how to make the light scenes I have only one Function for the rainbow scene and I wish to us… --- ## ["Open in new window" OK in Chrome fails in Firefox?](https://discourse.nodered.org/t/open-in-new-window-ok-in-chrome-fails-in-firefox/7170)
**Author:** [@questuk](https://discourse.nodered.org/u/questuk)\ **Replies:** 0\ **Last updated:** [23 January 2019 14:59 UTC](https://discourse.nodered.org/t/open-in-new-window-ok-in-chrome-fails-in-firefox/7170 "2019-01-23T14:59:43Z")
Hi I need to see more of the Debug flow panel, I click on "Open in new window" (bottom right) I then select 'current flow' This works correctly in Chrome In Firefox ( 64.0.2) it shows all of the flows ? There must … --- ## [What type of web pages can Node Red retrieve data from?](https://discourse.nodered.org/t/what-type-of-web-pages-can-node-red-retrieve-data-from/6769)
**Author:** [@shoots](https://discourse.nodered.org/u/shoots)\ **Replies:** 16\ **Last updated:** [23 January 2019 14:01 UTC](https://discourse.nodered.org/t/what-type-of-web-pages-can-node-red-retrieve-data-from/6769 "2019-01-23T14:01:47Z")
I have been trying to retrieve data from a weather site to use on my Node-Red dashboard. I have not been able to extract the data I want and wonder if their are certain types of site that it is possible to do this and so… --- ## [Execute an exernal .jar file, the best way](https://discourse.nodered.org/t/execute-an-exernal-jar-file-the-best-way/7149)
**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\ **Replies:** 8\ **Last updated:** [23 January 2019 13:02 UTC](https://discourse.nodered.org/t/execute-an-exernal-jar-file-the-best-way/7149 "2019-01-23T13:02:29Z")
Hi everyone, I hope you can clear me the best way, my knownledge of Linux and Node Red is limited, thank you. I have Sunricher dimmers, I've found a "bridge" via mqtt (thanks to the author for this) and I need to execut… --- ## [How to use node red in Android 8 smartphone](https://discourse.nodered.org/t/how-to-use-node-red-in-android-8-smartphone/7159)
**Author:** [@Varul92](https://discourse.nodered.org/u/Varul92)\ **Replies:** 9\ **Last updated:** [23 January 2019 12:00 UTC](https://discourse.nodered.org/t/how-to-use-node-red-in-android-8-smartphone/7159 "2019-01-23T12:00:09Z")
Hey, I am a beginner in Node-Red and I have created the Temperature Monitoring Application using ESP8266 and SHT31 I2C sensor module connected via MQTT server to Node red dashboard in Windows Operating System. But Now I… --- ## [Iframe with text/javascript?](https://discourse.nodered.org/t/iframe-with-text-javascript/7127)
**Author:** [@hermann1514](https://discourse.nodered.org/u/hermann1514)\ **Replies:** 7\ **Last updated:** [23 January 2019 10:50 UTC](https://discourse.nodered.org/t/iframe-with-text-javascript/7127 "2019-01-23T10:50:57Z")
Hello, I would like to enter the weather of Darksky via iframe. Unfortunately, then nothing is displayed there. I think it's the javascript. Can someone help me? It has always worked with other sites. The following li… --- ## [Sequence of processing](https://discourse.nodered.org/t/sequence-of-processing/7164)
**Author:** [@Tobi](https://discourse.nodered.org/u/Tobi)\ **Replies:** 1\ **Last updated:** [23 January 2019 10:39 UTC](https://discourse.nodered.org/t/sequence-of-processing/7164 "2019-01-23T10:39:57Z")
Hi, what is the order of processing. Does this happen in parallel or sequentially? Which tab is processed first and which node in the tab ? --- ## [How do I recall a context.flow variable and set to a node (ex: "switch")](https://discourse.nodered.org/t/how-do-i-recall-a-context-flow-variable-and-set-to-a-node-ex-switch/7131)
**Author:** [@jamesho](https://discourse.nodered.org/u/jamesho)\ **Replies:** 7\ **Last updated:** [23 January 2019 10:21 UTC](https://discourse.nodered.org/t/how-do-i-recall-a-context-flow-variable-and-set-to-a-node-ex-switch/7131 "2019-01-23T10:21:29Z")
How do I recall a context.flow variable to initial a node "switch"? Because when I call a tab, the switch will stay on latest status. I tried to store it in flow variable, but most of time it's undefined due to not chan… --- ## [AWS mqtt issue(cannot able to connect)](https://discourse.nodered.org/t/aws-mqtt-issue-cannot-able-to-connect/7161)
**Author:** [@RahulMathavan](https://discourse.nodered.org/u/RahulMathavan)\ **Replies:** 2\ **Last updated:** [23 January 2019 08:10 UTC](https://discourse.nodered.org/t/aws-mqtt-issue-cannot-able-to-connect/7161 "2019-01-23T08:10:04Z")
I am trying to use MQTT in AWS platform while creating the thing we need to download the root file. In some videos the CA certificate file is different it shows in txt, but the new AWS platform has in .html format. Paste… --- ## [In a node, how do you pass.js data to .html](https://discourse.nodered.org/t/in-a-node-how-do-you-pass-js-data-to-html/7153)
**Author:** [@JiChen](https://discourse.nodered.org/u/JiChen)\ **Replies:** 3\ **Last updated:** [23 January 2019 07:17 UTC](https://discourse.nodered.org/t/in-a-node-how-do-you-pass-js-data-to-html/7153 "2019-01-23T07:17:53Z")
For example, I want to create a database query node that is configured with a database connection via a query button.You write the query in.js, and then you go to the query button on the node, and you display the results… --- ## [Adding themes as a built-in option](https://discourse.nodered.org/t/adding-themes-as-a-built-in-option/6806)
**Author:** [@mbonani](https://discourse.nodered.org/u/mbonani)\ **Replies:** 1\ **Last updated:** [22 January 2019 23:49 UTC](https://discourse.nodered.org/t/adding-themes-as-a-built-in-option/6806 "2019-01-22T23:49:23Z")
First of all, I want to make it clear that I am not an experienced developer, but I am willing to collaborate. As suggested by @knolleary, the idea is to check the possibility of incorporating themes as a built-in optio… --- ## [Node-Red + Elasticsearch](https://discourse.nodered.org/t/node-red-elasticsearch/7093)
**Author:** [@Robin6538](https://discourse.nodered.org/u/Robin6538)\ **Replies:** 0\ **Last updated:** [21 January 2019 11:22 UTC](https://discourse.nodered.org/t/node-red-elasticsearch/7093 "2019-01-21T11:22:08Z")
Hello Everyone, I just started to work on node-red and trying to create a flow which will get the documents from elasticsearch. After filling all the details in the elastic node, getting an error 'ReferenceError: docume… --- ## [How to change the node-red editor font size and color](https://discourse.nodered.org/t/how-to-change-the-node-red-editor-font-size-and-color/7152)
**Author:** [@VIKRAMAS](https://discourse.nodered.org/u/VIKRAMAS)\ **Replies:** 1\ **Last updated:** [22 January 2019 21:39 UTC](https://discourse.nodered.org/t/how-to-change-the-node-red-editor-font-size-and-color/7152 "2019-01-22T21:39:34Z")
How to change the node-red editor font size and color , what is the css file name that I have to change. I have changed the theme but the header font color and size are still same. --- ## [Node-Red to HMI connection](https://discourse.nodered.org/t/node-red-to-hmi-connection/6626)
**Author:** [@jfehl](https://discourse.nodered.org/u/jfehl)\ **Replies:** 6\ **Last updated:** [22 January 2019 20:52 UTC](https://discourse.nodered.org/t/node-red-to-hmi-connection/6626 "2019-01-22T20:52:55Z")
I am trying to determining if there is a way to write data directly to a manufactured HMI that is capable of Modbus TCP/IP communications. I want to display values that are stored in an SQL database for example, on the… --- ## [Alexa development for Node Red integration stopped?](https://discourse.nodered.org/t/alexa-development-for-node-red-integration-stopped/7090)
**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\ **Replies:** 6\ **Last updated:** [22 January 2019 20:16 UTC](https://discourse.nodered.org/t/alexa-development-for-node-red-integration-stopped/7090 "2019-01-22T20:16:20Z")
Hi everybody, unfortunately we still not have support for Amazon Echo Plus, and the development for Node Red seems stopped from months. I think this is really useful and required feature for any Smart Home system, mabe … --- ## [Switch state set from file](https://discourse.nodered.org/t/switch-state-set-from-file/7094)
**Author:** [@domcsidd](https://discourse.nodered.org/u/domcsidd)\ **Replies:** 1\ **Last updated:** [21 January 2019 12:58 UTC](https://discourse.nodered.org/t/switch-state-set-from-file/7094 "2019-01-21T12:58:27Z")
Hi guys ! I want to set the button state after i start the node-red server , from a file .... I tried , and if i send a true or false value to the button , i can controll it ...like this: but , when i want to read … --- ## [MQTT-\>(JSON)-\>?-\>InfluxDB-\>Grafana](https://discourse.nodered.org/t/mqtt-json-influxdb-grafana/7108)
**Author:** [@BC84](https://discourse.nodered.org/u/BC84)\ **Replies:** 3\ **Last updated:** [22 January 2019 18:07 UTC](https://discourse.nodered.org/t/mqtt-json-influxdb-grafana/7108 "2019-01-22T18:07:10Z")
Hi, I'm brand new to NodeRed, MQTT, InfluxDB and Grafana I'm trying to visualize Data form a ESP8266. Onto the dashboard the data come in. But I've got an issue to transform the MQTT data into an proper format for Influ… --- ## [Node-red-contrib-ifttt-broker](https://discourse.nodered.org/t/node-red-contrib-ifttt-broker/7121)
**Author:** [@yoiang](https://discourse.nodered.org/u/yoiang)\ **Replies:** 2\ **Last updated:** [22 January 2019 16:15 UTC](https://discourse.nodered.org/t/node-red-contrib-ifttt-broker/7121 "2019-01-22T16:15:06Z")
Hey lovelies! I want to share with the community the beginnings of an IFTTT broker node library! With this library you can initial IFTTT Triggers from a Node-RED flow and have a Node-RED flow initiated by IFTTT! The mo… --- ## [Show and tell: sleep dimmer (lighting / audio / whatever)](https://discourse.nodered.org/t/show-and-tell-sleep-dimmer-lighting-audio-whatever/7041)
**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\ **Replies:** 6\ **Last updated:** [22 January 2019 15:26 UTC](https://discourse.nodered.org/t/show-and-tell-sleep-dimmer-lighting-audio-whatever/7041 "2019-01-22T15:26:05Z")
Here is a function that fades out a light at bedtime, where you can set three values (in red): I'm sure this is possible using only core nodes, but I am using Node-RED to learn a bit more about coding. For example, I … --- ## [Node-red terminating indefinitely](https://discourse.nodered.org/t/node-red-terminating-indefinitely/7079)
**Author:** [@gsr](https://discourse.nodered.org/u/gsr)\ **Replies:** 13\ **Last updated:** [22 January 2019 14:47 UTC](https://discourse.nodered.org/t/node-red-terminating-indefinitely/7079 "2019-01-22T14:47:56Z")
Node-red is terminating after few minutes of running and the error in the command prompt is "FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory", I am using windows … [Previous page](https://discourse.nodered.org/latest.md?page=1322) [Next page](https://discourse.nodered.org/latest.md?page=1324)