# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=867

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

**Page:** 868

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## [Node-red missing types i2c?](https://discourse.nodered.org/t/node-red-missing-types-i2c/13245)

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**Author:** [@Kiwi\_gamer01](https://discourse.nodered.org/u/Kiwi_gamer01)\
**Replies:** 5\
**Last updated:** [13 July 2019 18:41 UTC](https://discourse.nodered.org/t/node-red-missing-types-i2c/13245 "2019-07-13T18:41:56Z")

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I get the error (warning) when starting Node Red The flows were stopped due to missing node types. -i2c out -i2c in -i2c scan The node-red-contrib-i2c node is Installed but can not be removed or disabled. Also in the p…

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## [Controlling Relay](https://discourse.nodered.org/t/controlling-relay/13243)

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**Author:** [@lungsnjokoafrica](https://discourse.nodered.org/u/lungsnjokoafrica)\
**Replies:** 4\
**Last updated:** [14 July 2019 06:26 UTC](https://discourse.nodered.org/t/controlling-relay/13243 "2019-07-14T06:26:15Z")

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Hi all, I'm really new to node-red and I've been playing around with it for a couple of weeks. I'm trying to use the light scheduler to turn a relay channel on and off but I find that whatever is sent to the raspberry P…

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## [Dashboard UI is running but flow editor webpage is blank](https://discourse.nodered.org/t/dashboard-ui-is-running-but-flow-editor-webpage-is-blank/13181)

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**Author:** [@wb666greene](https://discourse.nodered.org/u/wb666greene)\
**Replies:** 6\
**Last updated:** [13 July 2019 08:59 UTC](https://discourse.nodered.org/t/dashboard-ui-is-running-but-flow-editor-webpage-is-blank/13181 "2019-07-13T08:59:40Z")

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This is a headless PiZeroW running Raspbian 9 and a node-red flow. The dashboard UI is displaying and working correctly, it shows the status of Bluetooth LE "beacons" as present or absent, so I know the flow is running.…

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## [Node Red Ram Usage](https://discourse.nodered.org/t/node-red-ram-usage/13186)

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**Author:** [@StrongTown](https://discourse.nodered.org/u/StrongTown)\
**Replies:** 7\
**Last updated:** [13 July 2019 01:01 UTC](https://discourse.nodered.org/t/node-red-ram-usage/13186 "2019-07-13T01:01:15Z")

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I've been trying to track down a RAM issue on my rpi3 B+. It is running Node Red only, standard sw load (LXDE, etc) otherwise, nothing else major. I do use Cepstral Swift for spoken voice messages (called via exec node)…

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## [Storing data coming from Raspberry Pi on personal computer](https://discourse.nodered.org/t/storing-data-coming-from-raspberry-pi-on-personal-computer/13229)

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**Author:** [@HYPER](https://discourse.nodered.org/u/HYPER)\
**Replies:** 5\
**Last updated:** [13 July 2019 00:22 UTC](https://discourse.nodered.org/t/storing-data-coming-from-raspberry-pi-on-personal-computer/13229 "2019-07-13T00:22:21Z")

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I'm using Node Red to interpret and report data from various sensors. Node red is running on a raspberry pi, however, I would like to log the sensor data to a new file on my computer. It seems like this should be simple,…

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## [Sending msg.payload inside template](https://discourse.nodered.org/t/sending-msg-payload-inside-template/13223)

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**Author:** [@Beothuk](https://discourse.nodered.org/u/Beothuk)\
**Replies:** 5\
**Last updated:** [13 July 2019 00:11 UTC](https://discourse.nodered.org/t/sending-msg-payload-inside-template/13223 "2019-07-13T00:11:54Z")

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I have read the UI sidebar for template node, but my use case is not the same. I have a CSS defined button call this script. function state(){ var checkbox = document.getElementById("myonoffswitch"); if (checkbox.che…

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## [Trigger Action from Bluetooth connect in Car](https://discourse.nodered.org/t/trigger-action-from-bluetooth-connect-in-car/13221)

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**Author:** [@smartmanor](https://discourse.nodered.org/u/smartmanor)\
**Replies:** 5\
**Last updated:** [13 July 2019 00:02 UTC](https://discourse.nodered.org/t/trigger-action-from-bluetooth-connect-in-car/13221 "2019-07-13T00:02:26Z")

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Hi all Just getting started with Node-Red to manage my HassIO integrations. I'm trying to trigger the gate automation For entry I have OpenALPR daemon running with a python fuzzy script to sent a HTTP Post upon match …

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## [Troubleshooting a wake-up alarm](https://discourse.nodered.org/t/troubleshooting-a-wake-up-alarm/13225)

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**Author:** [@bluenote73](https://discourse.nodered.org/u/bluenote73)\
**Replies:** 2\
**Last updated:** [12 July 2019 21:12 UTC](https://discourse.nodered.org/t/troubleshooting-a-wake-up-alarm/13225 "2019-07-12T21:12:33Z")

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Phew! First couple days with node-red and I'm mostly converted over as far as my mission critical functions. I imported a wake-up alarm from here: https://www.wouterbulten.nl/blog/tech/custom-wake-up-light-with-node-red…

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## [Send email error: ECCONREFUSED](https://discourse.nodered.org/t/send-email-error-ecconrefused/13075)

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**Author:** [@FerranA](https://discourse.nodered.org/u/FerranA)\
**Replies:** 4\
**Last updated:** [12 July 2019 11:39 UTC](https://discourse.nodered.org/t/send-email-error-ecconrefused/13075 "2019-07-12T11:39:32Z")

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Hello everybody, I am trying to send an email but it gives me an error. I have tried the following possible solutions: Different accounts Changing the password (I read somwhere that if it's longer than 8 character cou…

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## [Extarcting values from XML files](https://discourse.nodered.org/t/extarcting-values-from-xml-files/13131)

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**Author:** [@darkdude](https://discourse.nodered.org/u/darkdude)\
**Replies:** 7\
**Last updated:** [12 July 2019 09:18 UTC](https://discourse.nodered.org/t/extarcting-values-from-xml-files/13131 "2019-07-12T09:18:30Z")

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I'm using Node Red to extract data from reports generated by some medical equipment. These reports are in general XML files. And while these devices do their medical job properly, they are really bad at making reports. …

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## [Opening shutter Schedule](https://discourse.nodered.org/t/opening-shutter-schedule/13151)

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**Author:** [@aabbas](https://discourse.nodered.org/u/aabbas)\
**Replies:** 18\
**Last updated:** [12 July 2019 07:42 UTC](https://discourse.nodered.org/t/opening-shutter-schedule/13151 "2019-07-12T07:42:54Z")

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Hi, I want to create an opening schedule for my home shutters. I am using light scheduler node for open and close but I am trying to open my shutters at half between 9h and 12h. I am searching a function to change the m…

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## [Object to specific string](https://discourse.nodered.org/t/object-to-specific-string/12789)

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**Author:** [@node-n00b](https://discourse.nodered.org/u/node-n00b)\
**Replies:** 3\
**Last updated:** [12 July 2019 03:45 UTC](https://discourse.nodered.org/t/object-to-specific-string/12789 "2019-07-12T03:45:11Z")

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Dear Community, i am using Node Red since 3 Months now and did a good learning on it. But i am stuck all day long, and not quite good @ js. I Have a SMS Gateway Which accepts a payload of: NUMBER\_TEXT\_. e.g: +46887656\_…

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## [Store data arduino to SQL SERVER](https://discourse.nodered.org/t/store-data-arduino-to-sql-server/13149)

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**Author:** [@Arul-B](https://discourse.nodered.org/u/Arul-B)\
**Replies:** 4\
**Last updated:** [12 July 2019 00:01 UTC](https://discourse.nodered.org/t/store-data-arduino-to-sql-server/13149 "2019-07-12T00:01:54Z")

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How to store data sensor from arduino to sql server ?, Thank you

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## [Raspberry Pi UART](https://discourse.nodered.org/t/raspberry-pi-uart/13185)

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**Author:** [@georgethomas08](https://discourse.nodered.org/u/georgethomas08)\
**Replies:** 3\
**Last updated:** [11 July 2019 18:02 UTC](https://discourse.nodered.org/t/raspberry-pi-uart/13185 "2019-07-11T18:02:47Z")

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Hi folks, I am new to Node RED and MQTT, I would like to know how to use Raspberry pi UART (ttyS0) in Node Red, I mean which block I have to use it. Help me please Kind Regards George

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## [Website returns "var temp = "24";" How to parse such a string into json](https://discourse.nodered.org/t/website-returns-var-temp-24-how-to-parse-such-a-string-into-json/13142)

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**Author:** [@kentsor](https://discourse.nodered.org/u/kentsor)\
**Replies:** 3\
**Last updated:** [11 July 2019 16:02 UTC](https://discourse.nodered.org/t/website-returns-var-temp-24-how-to-parse-such-a-string-into-json/13142 "2019-07-11T16:02:35Z")

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I'm trying to pull data out of the official Canadian weather service website. There is a script used on the site that returns the values used by the rest of the scripts to format the page as a javascript variable declara…

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## [Serial output not working](https://discourse.nodered.org/t/serial-output-not-working/13175)

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**Author:** [@Charlotte](https://discourse.nodered.org/u/Charlotte)\
**Replies:** 5\
**Last updated:** [11 July 2019 15:43 UTC](https://discourse.nodered.org/t/serial-output-not-working/13175 "2019-07-11T15:43:16Z")

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Hi, I try to communicate with a balance by serial communication RS232. I send a command "S\\r\\n" to get the current weight. It is working properly from my hyperterminal or from a Python script but I can't make it work …

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## [Multiple object to Influxdb issue](https://discourse.nodered.org/t/multiple-object-to-influxdb-issue/13132)

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**Author:** [@SuperNinja](https://discourse.nodered.org/u/SuperNinja)\
**Replies:** 11\
**Last updated:** [11 July 2019 14:30 UTC](https://discourse.nodered.org/t/multiple-object-to-influxdb-issue/13132 "2019-07-11T14:30:25Z")

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Hi All, i want to transmit data to Grafana by Influxdb : This is the msg.payload : \[{"channel":89,"type":"counter","unit":"null","value":435,"name":"hoursCell89"},{"channel":16,"type":"voltage","unit":"v","value":5.5,…

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## [Build a custom Logger](https://discourse.nodered.org/t/build-a-custom-logger/13173)

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**Author:** [@Symonn](https://discourse.nodered.org/u/Symonn)\
**Replies:** 4\
**Last updated:** [11 July 2019 14:24 UTC](https://discourse.nodered.org/t/build-a-custom-logger/13173 "2019-07-11T14:24:58Z")

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Hi, I'm using node-red quite a lot, and i'm planning to save all the logs that comes out from the nodes to a database, as i'm writing this post, i've learned how to create a custom log handler (settings.js) for the logs…

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## [Alexa talking back](https://discourse.nodered.org/t/alexa-talking-back/13162)

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**Author:** [@Thewaver](https://discourse.nodered.org/u/Thewaver)\
**Replies:** 1\
**Last updated:** [11 July 2019 11:20 UTC](https://discourse.nodered.org/t/alexa-talking-back/13162 "2019-07-11T11:20:16Z")

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I have a temperature sensor monitoring the temperature of my boiler in node-red dashboard, I can also turn my boiler on or off with Alexa or node-red dashboard. Is it possible to ask Alexa to tell me the temperature of m…

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## [Error while starting new installed Node-red](https://discourse.nodered.org/t/error-while-starting-new-installed-node-red/13153)

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**Author:** [@Tarun](https://discourse.nodered.org/u/Tarun)\
**Replies:** 3\
**Last updated:** [11 July 2019 10:49 UTC](https://discourse.nodered.org/t/error-while-starting-new-installed-node-red/13153 "2019-07-11T10:49:25Z")

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I have installed Node-Red on a new Ubuntu 16.04.4 LTS on a VM as per the instructions mentioned in this link : https://diyprojects.io/node-red-installation-configuration-ubuntu-16-04-lts/#.XSbHkW4zZPZ But when I tried t…

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## [Alexa home skill node with Lifx Bulbs](https://discourse.nodered.org/t/alexa-home-skill-node-with-lifx-bulbs/13076)

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**Author:** [@codycato1882](https://discourse.nodered.org/u/codycato1882)\
**Replies:** 16\
**Last updated:** [9 July 2019 16:42 UTC](https://discourse.nodered.org/t/alexa-home-skill-node-with-lifx-bulbs/13076 "2019-07-09T16:42:58Z")

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Im using the Alexa-smart-home-v3 node. which has a payload HSV value for colors. My lifx node uses CSS for colors. Im using color converter node but it sometimes gives me some names like "lime or winter green" which the …

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## [How to enter a line after an exec node is started](https://discourse.nodered.org/t/how-to-enter-a-line-after-an-exec-node-is-started/12442)

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**Author:** [@mike67](https://discourse.nodered.org/u/mike67)\
**Replies:** 22\
**Last updated:** [11 July 2019 09:58 UTC](https://discourse.nodered.org/t/how-to-enter-a-line-after-an-exec-node-is-started/12442 "2019-07-11T09:58:58Z")

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Hello I need to launch a command. so, i use an exec node. But in this command (it's gactions,and I need it to publish my Google Actions), when gactions is launched, it gives me an url. Then, i must paste this url in …

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## [Node red and mqtt on ibm cloud (bluemix)?](https://discourse.nodered.org/t/node-red-and-mqtt-on-ibm-cloud-bluemix/3023)

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**Author:** [@j0hncc](https://discourse.nodered.org/u/j0hncc)\
**Replies:** 22\
**Last updated:** [11 July 2019 06:20 UTC](https://discourse.nodered.org/t/node-red-and-mqtt-on-ibm-cloud-bluemix/3023 "2019-07-11T06:20:27Z")

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Is it possible to use node red and mqtt on a bluemix instance without using the ibm "Managed devices" framework/environment? I am trying to set up a flow like this to send arbitraty messages but can't get the mqtt nod…

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## [HX711 ADC Node or Arduino Serial In Help](https://discourse.nodered.org/t/hx711-adc-node-or-arduino-serial-in-help/283)

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**Author:** [@zacharyalan09](https://discourse.nodered.org/u/zacharyalan09)\
**Replies:** 11\
**Last updated:** [10 July 2019 22:56 UTC](https://discourse.nodered.org/t/hx711-adc-node-or-arduino-serial-in-help/283 "2019-07-10T22:56:21Z")

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Hello! I’m working to build a first raspberry pi project measuring weight using a strain gage and HX711 chip. There’s a number of resources available online, and I’m able to read in the values with a python script today…

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## [Convert datetime with moment](https://discourse.nodered.org/t/convert-datetime-with-moment/13130)

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**Author:** [@Vincent\_D](https://discourse.nodered.org/u/Vincent_D)\
**Replies:** 11\
**Last updated:** [10 July 2019 21:39 UTC](https://discourse.nodered.org/t/convert-datetime-with-moment/13130 "2019-07-10T21:39:35Z")

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Hi. I hope I can get some help from you guys. I'm having a little trouble getting the date and time the way I want. I have node red read temp and time from a mysql database, in the database the input of time is like th…

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## [Node-RED install on Raspbian Buster Lite](https://discourse.nodered.org/t/node-red-install-on-raspbian-buster-lite/13106)

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**Author:** [@johnwalicki](https://discourse.nodered.org/u/johnwalicki)\
**Replies:** 7\
**Last updated:** [10 July 2019 20:41 UTC](https://discourse.nodered.org/t/node-red-install-on-raspbian-buster-lite/13106 "2019-07-10T20:41:15Z")

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I just burned a Raspbian Buster Lite image and want to install Node-RED. The new Node-RED documentation suggests running this command: $ bash \<(curl -sL https://raw.githubusercontent.com/node-red/raspbian-deb-package/ma…

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## [Floating point calculation speed](https://discourse.nodered.org/t/floating-point-calculation-speed/12669)

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**Author:** [@rburton](https://discourse.nodered.org/u/rburton)\
**Replies:** 23\
**Last updated:** [10 July 2019 20:22 UTC](https://discourse.nodered.org/t/floating-point-calculation-speed/12669 "2019-07-10T20:22:49Z")

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Hello all, I have a project in action and have functional code, it's solving inverse kinematics equations at the moment it's solving one, but I need it to solve 6 equations simultaneously every 2500 nano seconds, when w…

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## [Connect to Google cloud IoT](https://discourse.nodered.org/t/connect-to-google-cloud-iot/13105)

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**Author:** [@crocky](https://discourse.nodered.org/u/crocky)\
**Replies:** 2\
**Last updated:** [10 July 2019 19:27 UTC](https://discourse.nodered.org/t/connect-to-google-cloud-iot/13105 "2019-07-10T19:27:20Z")

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I'm trying to connect a Raspberry to Google Cloud IoT using node-red-contrib-google-iot-core but I haven't found any documentation whatsoever. So after many hours of searching the net I have to ask a few questions and ho…

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## [Motion sensor and too high lux after light goes from on to off](https://discourse.nodered.org/t/motion-sensor-and-too-high-lux-after-light-goes-from-on-to-off/13112)

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**Author:** [@enigma2k](https://discourse.nodered.org/u/enigma2k)\
**Replies:** 4\
**Last updated:** [10 July 2019 19:05 UTC](https://discourse.nodered.org/t/motion-sensor-and-too-high-lux-after-light-goes-from-on-to-off/13112 "2019-07-10T19:05:46Z")

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Hi! I’ve made a simple automation where the light goes on as soon as it is dark and it will also extend as long as there is motion. My problem is, however, that if I got right into the motion sensor once the light switc…

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## [Is anyone using XMLTV Feeds?](https://discourse.nodered.org/t/is-anyone-using-xmltv-feeds/13123)

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**Author:** [@nodecentral](https://discourse.nodered.org/u/nodecentral)\
**Replies:** 0\
**Last updated:** [10 July 2019 18:34 UTC](https://discourse.nodered.org/t/is-anyone-using-xmltv-feeds/13123 "2019-07-10T18:34:34Z")

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By any chance, is anyone already using XMLTV feeds (http://www.xmltv.co.uk/feeds) in their Node Red set up ? It looks like a good set of data to work with around up coming programmes etc. Could be a worthwhile integrati…

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