# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=928

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

**Page:** 929

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## [Convert word to bool to word](https://discourse.nodered.org/t/convert-word-to-bool-to-word/5852)

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**Author:** [@martinschki](https://discourse.nodered.org/u/martinschki)\
**Replies:** 7\
**Last updated:** [16 December 2018 16:24 UTC](https://discourse.nodered.org/t/convert-word-to-bool-to-word/5852 "2018-12-16T16:24:22Z")

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I receive a variable as a word, but in that word information is coded as bits. So after I receive the variable, I need to split up the word into bits, then do stuff, and then reassemble the bits into that word again to …

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## [Data array to payload v.v](https://discourse.nodered.org/t/data-array-to-payload-v-v/5847)

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**Author:** [@markcremer](https://discourse.nodered.org/u/markcremer)\
**Replies:** 2\
**Last updated:** [16 December 2018 15:59 UTC](https://discourse.nodered.org/t/data-array-to-payload-v-v/5847 "2018-12-16T15:59:49Z")

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Hi guys tried hours and manny manny searches but I cannot find a way how to. de array's in chart 1, 2 and 3 arre the same but once trought a msg it's not working. see de flow below. I cannot get the payload back to an…

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## [Using arduino serial data to control gpio](https://discourse.nodered.org/t/using-arduino-serial-data-to-control-gpio/5823)

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**Author:** [@mason08](https://discourse.nodered.org/u/mason08)\
**Replies:** 7\
**Last updated:** [15 December 2018 23:20 UTC](https://discourse.nodered.org/t/using-arduino-serial-data-to-control-gpio/5823 "2018-12-15T23:20:44Z")

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So currently in my flow im using numbers that are being sent from a arduino to display info on the dashboard. Now what i want to do is use the numbers to turn on or off relays. I currently have a 3 relay board attached…

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## [Using Serial, transfering string or int to Arduino](https://discourse.nodered.org/t/using-serial-transfering-string-or-int-to-arduino/5838)

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**Author:** [@Christian](https://discourse.nodered.org/u/Christian)\
**Replies:** 0\
**Last updated:** [15 December 2018 21:27 UTC](https://discourse.nodered.org/t/using-serial-transfering-string-or-int-to-arduino/5838 "2018-12-15T21:27:33Z")

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Hello everyone! Boy, I learned from my stupidity. I'm still having trouble though, and it's baffling me to some degree. Trying to send a simple "15:47" over a serial node to my Arduino. It says connected and everything…

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## [Message multiplexer in NR](https://discourse.nodered.org/t/message-multiplexer-in-nr/5833)

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**Author:** [@igrowing](https://discourse.nodered.org/u/igrowing)\
**Replies:** 2\
**Last updated:** [15 December 2018 20:30 UTC](https://discourse.nodered.org/t/message-multiplexer-in-nr/5833 "2018-12-15T20:30:29Z")

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Hi guys, Is there message multiplexer in Node-RED? Like a signal multiplexer in electronics: one type of messages can control flow of all other types of messages. Example: Control message has topic 'control'. 2 othe…

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## [Flexible wireless logon, like espeasy on Arduino](https://discourse.nodered.org/t/flexible-wireless-logon-like-espeasy-on-arduino/5834)

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**Author:** [@Noh](https://discourse.nodered.org/u/Noh)\
**Replies:** 0\
**Last updated:** [15 December 2018 19:27 UTC](https://discourse.nodered.org/t/flexible-wireless-logon-like-espeasy-on-arduino/5834 "2018-12-15T19:27:02Z")

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I've recently used espeasy (firmware for an Arduino-like board with WiFi) and it has a great facility - if it can log-on to a wireless access point (AP), using saved credentials, it will. If it can't, it throws up its ow…

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## [Serial port properties](https://discourse.nodered.org/t/serial-port-properties/949)

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**Author:** [@Ruyal](https://discourse.nodered.org/u/Ruyal)\
**Replies:** 3\
**Last updated:** [21 June 2018 16:23 UTC](https://discourse.nodered.org/t/serial-port-properties/949 "2018-06-21T16:23:49Z")

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Hi! I have a question about the Serial-node. I would like to make a button that changes between two different settings for a serial port. It will be using the same serial port, but with different settings, parity, stop…

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## [Is this possible: NR on laptop with arduino](https://discourse.nodered.org/t/is-this-possible-nr-on-laptop-with-arduino/5739)

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**Author:** [@kenkoknz](https://discourse.nodered.org/u/kenkoknz)\
**Replies:** 3\
**Last updated:** [15 December 2018 00:17 UTC](https://discourse.nodered.org/t/is-this-possible-nr-on-laptop-with-arduino/5739 "2018-12-15T00:17:18Z")

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Hi, In case someone done this before or experience with this (could save me a lot of mucking around). Is it possible to install pi Debian (with NR) on a laptop; https://projects.raspberrypi.org/en/projects/install-ra…

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## [Alexa Alarm clock](https://discourse.nodered.org/t/alexa-alarm-clock/5817)

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**Author:** [@Gummix](https://discourse.nodered.org/u/Gummix)\
**Replies:** 0\
**Last updated:** [14 December 2018 22:37 UTC](https://discourse.nodered.org/t/alexa-alarm-clock/5817 "2018-12-14T22:37:49Z")

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Hello, Is there a node that can read the alarm clock or is there a way to get the set Alarm to nodered? Thanks

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## [Node red performance](https://discourse.nodered.org/t/node-red-performance/5788)

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**Author:** [@rinzin](https://discourse.nodered.org/u/rinzin)\
**Replies:** 3\
**Last updated:** [14 December 2018 16:59 UTC](https://discourse.nodered.org/t/node-red-performance/5788 "2018-12-14T16:59:05Z")

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Hello, I am new to node-red and I was wondering whether running a node-red HTTP server will be the same as running a nodejs server? what about the performance?

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## [\[Solved \]Selecting an object in an array of objects with JSONata with incoming msg.payload](https://discourse.nodered.org/t/solved-selecting-an-object-in-an-array-of-objects-with-jsonata-with-incoming-msg-payload/5807)

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**Author:** [@IoTPlay](https://discourse.nodered.org/u/IoTPlay)\
**Replies:** 1\
**Last updated:** [14 December 2018 13:32 UTC](https://discourse.nodered.org/t/solved-selecting-an-object-in-an-array-of-objects-with-jsonata-with-incoming-msg-payload/5807 "2018-12-14T13:32:11Z")

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I have this object / array in flowContext named dig2: {"registry": \[ { "Catid" : "Air-1a", "Name" : "Air", "ValueName" : "Humidity", "Loc" : "North Quad"}, { "thing\_id"…

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## [Split to different outputs](https://discourse.nodered.org/t/split-to-different-outputs/5773)

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**Author:** [@dakure](https://discourse.nodered.org/u/dakure)\
**Replies:** 4\
**Last updated:** [14 December 2018 12:39 UTC](https://discourse.nodered.org/t/split-to-different-outputs/5773 "2018-12-14T12:39:05Z")

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I am using a split node to tear apart a 8 bit binary number in string with fixed lenght of 1. Is there a way to split it in different outputs ? Is it possible to use the switch node outputs with the split node to separ…

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## [Node Red v0.19.5 modbus serial rs 485 can not be installed](https://discourse.nodered.org/t/node-red-v0-19-5-modbus-serial-rs-485-can-not-be-installed/5790)

<div class="topic-metadata">

**Author:** [@Hasan](https://discourse.nodered.org/u/Hasan)\
**Replies:** 10\
**Last updated:** [14 December 2018 11:49 UTC](https://discourse.nodered.org/t/node-red-v0-19-5-modbus-serial-rs-485-can-not-be-installed/5790 "2018-12-14T11:49:10Z")

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Hello After updating node red ı can not install again node red Modbus Serial Rs 485 again

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## [Error on stop/restart](https://discourse.nodered.org/t/error-on-stop-restart/178)

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**Author:** [@adam](https://discourse.nodered.org/u/adam)\
**Replies:** 18\
**Last updated:** [13 December 2018 08:23 UTC](https://discourse.nodered.org/t/error-on-stop-restart/178 "2018-12-13T08:23:43Z")

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I’m getting the following error when stopping or restarting Node-RED: 15 May 07:10:00 - \[red\] Uncaught Exception: 15 May 07:10:00 - Error: write EPIPE at \_errnoException (util.js:1022:11) at WriteWrap.afterWrite…

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## [How to stop a flow tab from running](https://discourse.nodered.org/t/how-to-stop-a-flow-tab-from-running/5772)

<div class="topic-metadata">

**Author:** [@kenkoknz](https://discourse.nodered.org/u/kenkoknz)\
**Replies:** 2\
**Last updated:** [14 December 2018 08:54 UTC](https://discourse.nodered.org/t/how-to-stop-a-flow-tab-from-running/5772 "2018-12-14T08:54:31Z")

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Hi, May have been addressed before and may be a silly question, but how do you stop a flow tab? I notice that you can disable a flow tab but the flow still runs, just cannot edit the flow. so: Can we stop and start in…

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## [Can't install / update nodes on v0.19.15](https://discourse.nodered.org/t/cant-install-update-nodes-on-v0-19-15/5778)

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**Author:** [@rgerrans](https://discourse.nodered.org/u/rgerrans)\
**Replies:** 1\
**Last updated:** [14 December 2018 05:39 UTC](https://discourse.nodered.org/t/cant-install-update-nodes-on-v0-19-15/5778 "2018-12-14T05:39:32Z")

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I updated to v0.19.15 last night using the raspberrypi script and when I went to update a node tonight I got the following error: npm ERR! code 128 npm ERR! Command failed: /usr/bin/git clone --depth=1 -q -b master git:…

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## [How can I internet accces via proxy with node-red on Ubuntu](https://discourse.nodered.org/t/how-can-i-internet-accces-via-proxy-with-node-red-on-ubuntu/5742)

<div class="topic-metadata">

**Author:** [@K\_ueda](https://discourse.nodered.org/u/K_ueda)\
**Replies:** 3\
**Last updated:** [14 December 2018 04:37 UTC](https://discourse.nodered.org/t/how-can-i-internet-accces-via-proxy-with-node-red-on-ubuntu/5742 "2018-12-14T04:37:05Z")

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【environment】 CentOS7(Linux 3.10.0-826.11.6.el7.x86\_64 x64 LE) Node-RED version: v0.18.7 Node.js version:v6.14.3 setting 【Proxy】 telnet myproxy.local.co.jp 8080 and confirmed it GET Yahoo! JAPAN I got HTM file 【…

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## [What is this return character?](https://discourse.nodered.org/t/what-is-this-return-character/5768)

<div class="topic-metadata">

**Author:** [@dakure](https://discourse.nodered.org/u/dakure)\
**Replies:** 4\
**Last updated:** [13 December 2018 20:26 UTC](https://discourse.nodered.org/t/what-is-this-return-character/5768 "2018-12-13T20:26:24Z")

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I am using a relay board of sequentmicrosystems wich work with commands. All the values this commands get have a return character (↵) after the expected value like you can see in the first debug of the attached image. …

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## [Change DateTime format](https://discourse.nodered.org/t/change-datetime-format/5754)

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**Author:** [@cabriopuma](https://discourse.nodered.org/u/cabriopuma)\
**Replies:** 11\
**Last updated:** [13 December 2018 20:03 UTC](https://discourse.nodered.org/t/change-datetime-format/5754 "2018-12-13T20:03:31Z")

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Hi @ all, at the moment I'm coming not to the solution about that. How could I change the format 2018-12-13T07:03:00.000+0000 only to the time? (In that case to 07:03 or 7.30). Would be great for any kind of help.

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## [Freezing on EC2](https://discourse.nodered.org/t/freezing-on-ec2/5765)

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**Author:** [@paulwareham](https://discourse.nodered.org/u/paulwareham)\
**Replies:** 0\
**Last updated:** [13 December 2018 17:37 UTC](https://discourse.nodered.org/t/freezing-on-ec2/5765 "2018-12-13T17:37:47Z")

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Hi Folks, I recently installed node-red on an Amazon EC2 instance. I have a flow which about a 15 nodes and have been testing it successfully. Howver it stops working seemingly randomly and the UI is no longer availab…

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## [How to access to url '/' in http-in node](https://discourse.nodered.org/t/how-to-access-to-url-in-http-in-node/5762)

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**Author:** [@Lionel](https://discourse.nodered.org/u/Lionel)\
**Replies:** 2\
**Last updated:** [13 December 2018 16:08 UTC](https://discourse.nodered.org/t/how-to-access-to-url-in-http-in-node/5762 "2018-12-13T16:08:18Z")

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Hi, I am moving a project from NodeJs/Express to Node-Red. To do that, I use a http-in node as http endpoint, and I want to be able to access to the url '/' (in the node http-in), which is the url to access the UI. Is …

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## [Raspberry PI Input problem](https://discourse.nodered.org/t/raspberry-pi-input-problem/5643)

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**Author:** [@IvarMvl](https://discourse.nodered.org/u/IvarMvl)\
**Replies:** 9\
**Last updated:** [13 December 2018 14:33 UTC](https://discourse.nodered.org/t/raspberry-pi-input-problem/5643 "2018-12-13T14:33:01Z")

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so i keep getting this error code ''GPIO pin 16 already set as type: input'' while trying to use a irl button to control a relay i dont know what they mean with this.

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## [Headless Raspberry Pi](https://discourse.nodered.org/t/headless-raspberry-pi/5628)

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**Author:** [@Andrei](https://discourse.nodered.org/u/Andrei)\
**Replies:** 7\
**Last updated:** [13 December 2018 14:29 UTC](https://discourse.nodered.org/t/headless-raspberry-pi/5628 "2018-12-13T14:29:50Z")

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I am getting ready to install Node-RED in a new Raspberry pi 3, using Raspbian Stretch Lite, that will run headless. At this time the SD card is ready with the image and nothing else has been installed (eg. Node.js). My…

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## [What's your choice for MQTT clouds with dashboard?](https://discourse.nodered.org/t/whats-your-choice-for-mqtt-clouds-with-dashboard/5720)

<div class="topic-metadata">

**Author:** [@Tamazin96](https://discourse.nodered.org/u/Tamazin96)\
**Replies:** 4\
**Last updated:** [13 December 2018 09:07 UTC](https://discourse.nodered.org/t/whats-your-choice-for-mqtt-clouds-with-dashboard/5720 "2018-12-13T09:07:22Z")

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Hey guys, I just wanted to know if anyone has experience with clouds that use MQTT and are node-red friendly but there's a catch. I want the cloud to have a dashboard that offers widgets like switches and gauges because …

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## [Node-red on debian - libpcap/amazon dash](https://discourse.nodered.org/t/node-red-on-debian-libpcap-amazon-dash/5721)

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**Author:** [@Samuel](https://discourse.nodered.org/u/Samuel)\
**Replies:** 3\
**Last updated:** [13 December 2018 07:31 UTC](https://discourse.nodered.org/t/node-red-on-debian-libpcap-amazon-dash/5721 "2018-12-13T07:31:49Z")

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hi guys, I have recently resurrected my old netbook (samsung nc10) and installed debian 9 on it. works great, good learning curve and NR works much faster than on raspi for example. So far I have managed to install most…

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## [How split data received from serial port](https://discourse.nodered.org/t/how-split-data-received-from-serial-port/5686)

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**Author:** [@antedoro](https://discourse.nodered.org/u/antedoro)\
**Replies:** 6\
**Last updated:** [12 December 2018 21:44 UTC](https://discourse.nodered.org/t/how-split-data-received-from-serial-port/5686 "2018-12-12T21:44:22Z")

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Hi All, My Node-red is receiving data from Arduino serial port. The data Arduino is sending cam from this code: Serial.print(rpm\_SetPoint); Serial.print("\\t"); Serial.print(angleValue); Serial.print("\\t"); Se…

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## [Context.get stoped working](https://discourse.nodered.org/t/context-get-stoped-working/5663)

<div class="topic-metadata">

**Author:** [@toogooda](https://discourse.nodered.org/u/toogooda)\
**Replies:** 7\
**Last updated:** [12 December 2018 21:39 UTC](https://discourse.nodered.org/t/context-get-stoped-working/5663 "2018-12-12T21:39:27Z")

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Hi All, I had used a simple function to check if the value of the water tank had changed before sending a slack notification. was all working then one day started sending it every time like it was not saving the value. …

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## [G Suite IMAP and the email node](https://discourse.nodered.org/t/g-suite-imap-and-the-email-node/5728)

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**Author:** [@JayDickson](https://discourse.nodered.org/u/JayDickson)\
**Replies:** 0\
**Last updated:** [12 December 2018 20:21 UTC](https://discourse.nodered.org/t/g-suite-imap-and-the-email-node/5728 "2018-12-12T20:21:05Z")

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So I've been working on trying to get external mail working with a pager flow I'm building. In some of my testing at home, I've been able to get the email node to work just fine with normal gmail accounts, but my particu…

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## [Create Web Service](https://discourse.nodered.org/t/create-web-service/5696)

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**Author:** [@dedynobre](https://discourse.nodered.org/u/dedynobre)\
**Replies:** 4\
**Last updated:** [12 December 2018 17:44 UTC](https://discourse.nodered.org/t/create-web-service/5696 "2018-12-12T17:44:01Z")

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Hi! Has anyone used the Node Network as a web service? I already managed to use the node red to consume a WebService. Now I would like to do the inverse, the Node Red provide some services. For exemple:

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## [Error Cannot GET /homeassistant/entities](https://discourse.nodered.org/t/error-cannot-get-homeassistant-entities/5714)

<div class="topic-metadata">

**Author:** [@mickiepitts](https://discourse.nodered.org/u/mickiepitts)\
**Replies:** 2\
**Last updated:** [12 December 2018 15:54 UTC](https://discourse.nodered.org/t/error-cannot-get-homeassistant-entities/5714 "2018-12-12T15:54:13Z")

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Just installed Node-RED and every thing went well, I thought. Logged in and can see everything even the Home Assistant in the left menu. On my first flow I entered the "Current State Flow" from the left menu and dragged…

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