# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=964

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

**Page:** 965

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## [Version v0.18.7 + Modbus](https://discourse.nodered.org/t/version-v0-18-7-modbus/893)

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**Author:** [@Hasan](https://discourse.nodered.org/u/Hasan)\
**Replies:** 10\
**Last updated:** [19 June 2018 10:04 UTC](https://discourse.nodered.org/t/version-v0-18-7-modbus/893 "2018-06-19T10:04:07Z")

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Modbus communication can not be selected for this version AND modbus does not appear

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## [MQTT Broker disconnected](https://discourse.nodered.org/t/mqtt-broker-disconnected/882)

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**Author:** [@YT2310](https://discourse.nodered.org/u/YT2310)\
**Replies:** 20\
**Last updated:** [19 June 2018 08:16 UTC](https://discourse.nodered.org/t/mqtt-broker-disconnected/882 "2018-06-19T08:16:32Z")

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Hello there, I got a Problem with my Moska MQTT Broker. If i want to use the Broker it says, Broker is unconnected. the Debug window says the following: msg : string\[73\] "Error starting mosca mqtt server, cause: Err…

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## [How to decoding data from payload to string , its for show sensor informacion](https://discourse.nodered.org/t/how-to-decoding-data-from-payload-to-string-its-for-show-sensor-informacion/897)

<div class="topic-metadata">

**Author:** [@martin\_utzac1](https://discourse.nodered.org/u/martin_utzac1)\
**Replies:** 8\
**Last updated:** [19 June 2018 07:02 UTC](https://discourse.nodered.org/t/how-to-decoding-data-from-payload-to-string-its-for-show-sensor-informacion/897 "2018-06-19T07:02:15Z")

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please helpme to show informacion of a sensor please on node-red i have troubles converting from data base64 to string it is my test 1

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## [I'm missing something with the inject node and the { } optoin](https://discourse.nodered.org/t/im-missing-something-with-the-inject-node-and-the-optoin/868)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 25\
**Last updated:** [18 June 2018 22:58 UTC](https://discourse.nodered.org/t/im-missing-something-with-the-inject-node-and-the-optoin/868 "2018-06-18T22:58:30Z")

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I am trying to get to do things better. Recent events caused me to need an injection. Easy enough, but I am not getting how to do it with as few nods as possible. Here is the example: \[{"id":"70154d57.8eff44","type":…

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## [Notifications I am getting and their timing](https://discourse.nodered.org/t/notifications-i-am-getting-and-their-timing/900)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 0\
**Last updated:** [18 June 2018 22:32 UTC](https://discourse.nodered.org/t/notifications-i-am-getting-and-their-timing/900 "2018-06-18T22:32:38Z")

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Ok, I’m confused. Originally I could understand the idea I post a message/thread and if someone replies I get a notification. And I did. In very short time, as well and notifications on this board (top right). Now,…

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## [Cisco Spark Webhook Integration](https://discourse.nodered.org/t/cisco-spark-webhook-integration/881)

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**Author:** [@ebnerjoh](https://discourse.nodered.org/u/ebnerjoh)\
**Replies:** 2\
**Last updated:** [18 June 2018 09:49 UTC](https://discourse.nodered.org/t/cisco-spark-webhook-integration/881 "2018-06-18T09:49:43Z")

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Hi, Someone here who has already successfully integrated Cisco Spark? Br, Johannes

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## [Openhab2 'controller' not cleaned up - Debug connection errors non-stop](https://discourse.nodered.org/t/openhab2-controller-not-cleaned-up-debug-connection-errors-non-stop/876)

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**Author:** [@pauly7300](https://discourse.nodered.org/u/pauly7300)\
**Replies:** 5\
**Last updated:** [17 June 2018 21:35 UTC](https://discourse.nodered.org/t/openhab2-controller-not-cleaned-up-debug-connection-errors-non-stop/876 "2018-06-17T21:35:53Z")

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I installed the Openhab2 node and configured a ‘controller’ to try and connect to an instance of OH i had running. I gave it a unique name and configured it to connect to local host (127.0.0.1). I didn’t spend much tim…

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## [NR unresponsive after update Raspberry](https://discourse.nodered.org/t/nr-unresponsive-after-update-raspberry/860)

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**Author:** [@edje11](https://discourse.nodered.org/u/edje11)\
**Replies:** 3\
**Last updated:** [16 June 2018 23:04 UTC](https://discourse.nodered.org/t/nr-unresponsive-after-update-raspberry/860 "2018-06-16T23:04:48Z")

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I have update the raspberry where my Node-red and Mosquito was running on from a 2 to the 3B+ version. Because the the 3B+ doesn’t work on jessie I had to update the os to stretch. Not that hard to do, Mosquitto gave m…

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## [Pythonshell help](https://discourse.nodered.org/t/pythonshell-help/844)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 5\
**Last updated:** [16 June 2018 22:28 UTC](https://discourse.nodered.org/t/pythonshell-help/844 "2018-06-16T22:28:54Z")

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I am trying to get pythonshell working. I am wanting to run a python script on a remote machine to display a message on the LCD screen. On that machine I run the ..... python script eg: python3 display\_message.3 test …

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## [How to give default value to dynamically changed json parameter](https://discourse.nodered.org/t/how-to-give-default-value-to-dynamically-changed-json-parameter/859)

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**Author:** [@hary](https://discourse.nodered.org/u/hary)\
**Replies:** 1\
**Last updated:** [16 June 2018 20:46 UTC](https://discourse.nodered.org/t/how-to-give-default-value-to-dynamically-changed-json-parameter/859 "2018-06-16T20:46:35Z")

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Hi In a button’s node-red code I have the json “bgcolor” like the following to be able to dynamically change it "bgcolor":"{{background}}" But how to give it a default color before my code update the background value ? …

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## [Node Red with Home Assistant: Need some help to start](https://discourse.nodered.org/t/node-red-with-home-assistant-need-some-help-to-start/788)

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**Author:** [@ebnerjoh](https://discourse.nodered.org/u/ebnerjoh)\
**Replies:** 23\
**Last updated:** [16 June 2018 09:20 UTC](https://discourse.nodered.org/t/node-red-with-home-assistant-need-some-help-to-start/788 "2018-06-16T09:20:42Z")

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Hi, I started a couple of weeks with Home Assistant and it is already working very well, except some complicated automation rules. Then I noticed Node Red and I think it could help me. I installed it just a couple of d…

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## [Node problem. What it is and what it says](https://discourse.nodered.org/t/node-problem-what-it-is-and-what-it-says/855)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 2\
**Last updated:** [16 June 2018 08:53 UTC](https://discourse.nodered.org/t/node-problem-what-it-is-and-what-it-says/855 "2018-06-16T08:53:14Z")

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Just mentioning here. I recently installed a node from the big library. https://flows.nodered.org/node/node-red-contrib-advance-logger It is a "LOGGER". Yet, when I click on the node with INFO this is what I see: A …

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## [Stoptimer / Delay](https://discourse.nodered.org/t/stoptimer-delay/849)

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**Author:** [@mrStevens](https://discourse.nodered.org/u/mrStevens)\
**Replies:** 2\
**Last updated:** [16 June 2018 06:02 UTC](https://discourse.nodered.org/t/stoptimer-delay/849 "2018-06-16T06:02:00Z")

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Hello all, I am currently working on a project with node-red. What I am trying to create is a simple monitor/alarm box that will watch a current sensor I have plugged into the raspberry pi. What I want it to do is, if t…

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## [If exists objects](https://discourse.nodered.org/t/if-exists-objects/839)

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**Author:** [@RogierQ](https://discourse.nodered.org/u/RogierQ)\
**Replies:** 4\
**Last updated:** [15 June 2018 21:21 UTC](https://discourse.nodered.org/t/if-exists-objects/839 "2018-06-15T21:21:36Z")

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Hi! I have this payload.Response.Appointment or payload.Response.Objects this… if i do a test like if ( msg.payload.Response.Objects == null ){ i get an error, whatr am i doing wrong???

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## [POST /flows method](https://discourse.nodered.org/t/post-flows-method/807)

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**Author:** [@ThanosMel](https://discourse.nodered.org/u/ThanosMel)\
**Replies:** 2\
**Last updated:** [15 June 2018 10:06 UTC](https://discourse.nodered.org/t/post-flows-method/807 "2018-06-15T10:06:02Z")

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I want to update my flows remotely. So i am using an http get request to take the new flow and then using an http POST/flows request to set the new active flow configuration. The thing is that is that the new flow that …

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## [Typeof msg.payload === 'number' throws exception](https://discourse.nodered.org/t/typeof-msg-payload-number-throws-exception/828)

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**Author:** [@naser300](https://discourse.nodered.org/u/naser300)\
**Replies:** 1\
**Last updated:** [15 June 2018 06:25 UTC](https://discourse.nodered.org/t/typeof-msg-payload-number-throws-exception/828 "2018-06-15T06:25:47Z")

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Hi, I tried to convert a msg.payload to return round value of the number. But the function does not return the number. The js code is here: module.exports = function(RED) { function MathOPeration(config) { R…

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## [Como recibir datos de un sensor de arduino y mostarlos en node-red](https://discourse.nodered.org/t/como-recibir-datos-de-un-sensor-de-arduino-y-mostarlos-en-node-red/747)

<div class="topic-metadata">

**Author:** [@martin\_utzac](https://discourse.nodered.org/u/martin_utzac)\
**Replies:** 6\
**Last updated:** [14 June 2018 20:59 UTC](https://discourse.nodered.org/t/como-recibir-datos-de-un-sensor-de-arduino-y-mostarlos-en-node-red/747 "2018-06-14T20:59:21Z")

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Ayuda necesito mostrar datos numercos de un poenciometro en node red

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## [I can't login at node-red](https://discourse.nodered.org/t/i-cant-login-at-node-red/811)

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**Author:** [@martin\_utzac1](https://discourse.nodered.org/u/martin_utzac1)\
**Replies:** 1\
**Last updated:** [14 June 2018 17:01 UTC](https://discourse.nodered.org/t/i-cant-login-at-node-red/811 "2018-06-14T17:01:02Z")

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mi problema es que en otra pc si se puede ingresar y en la mia solo se pudo una sola vez via online…como lo soluciono?

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## [Base64 to decimal converter on node-red](https://discourse.nodered.org/t/base64-to-decimal-converter-on-node-red/796)

<div class="topic-metadata">

**Author:** [@martin\_utzac1](https://discourse.nodered.org/u/martin_utzac1)\
**Replies:** 4\
**Last updated:** [14 June 2018 14:50 UTC](https://discourse.nodered.org/t/base64-to-decimal-converter-on-node-red/796 "2018-06-14T14:50:41Z")

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pleas esomebody help me … I need convert data receivd to decimal and print it on a debug

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## [USB connection to MQTT and Node-red](https://discourse.nodered.org/t/usb-connection-to-mqtt-and-node-red/488)

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**Author:** [@hary](https://discourse.nodered.org/u/hary)\
**Replies:** 5\
**Last updated:** [14 June 2018 10:07 UTC](https://discourse.nodered.org/t/usb-connection-to-mqtt-and-node-red/488 "2018-06-14T10:07:58Z")

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Hi. I woudl like to use an Arduino linked to a computer and use node-red for the IHM with my code running on the Arduino (PID regulator and datalogger). I would like to use node-red to launch the program on the Arduino …

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## [Worldmap Zoom level](https://discourse.nodered.org/t/worldmap-zoom-level/789)

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**Author:** [@adrianbro](https://discourse.nodered.org/u/adrianbro)\
**Replies:** 9\
**Last updated:** [13 June 2018 18:34 UTC](https://discourse.nodered.org/t/worldmap-zoom-level/789 "2018-06-13T18:34:21Z")

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Hi guys, Anybody know how to increase the mac zoom level of osm on Worldmap the max is 18 but from memory osm is capable of at least 20 or 22 Cheers

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## [\[ASK\] Read Datalog using Node red](https://discourse.nodered.org/t/ask-read-datalog-using-node-red/772)

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**Author:** [@aribriant](https://discourse.nodered.org/u/aribriant)\
**Replies:** 5\
**Last updated:** [13 June 2018 13:58 UTC](https://discourse.nodered.org/t/ask-read-datalog-using-node-red/772 "2018-06-13T13:58:46Z")

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Hii Guys I would like to read the datalog of my machine. The datalog is using CSV and I just want to read the last line. Im facing some problem to do that. My datalog filename is changing over weeks. By example it n…

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## [About Design Raspberry and Node-red](https://discourse.nodered.org/t/about-design-raspberry-and-node-red/782)

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**Author:** [@wtrk](https://discourse.nodered.org/u/wtrk)\
**Replies:** 3\
**Last updated:** [13 June 2018 10:30 UTC](https://discourse.nodered.org/t/about-design-raspberry-and-node-red/782 "2018-06-13T10:30:15Z")

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I have a project with Arduino. I just control temperature and some PLC inputs. If one of PLC connections pin status low, everthing is ok and we see a message in explorer " Everything is Fine " but if connection pin ge…

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## [Parse two infos of multiple elements](https://discourse.nodered.org/t/parse-two-infos-of-multiple-elements/781)

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**Author:** [@Raychen](https://discourse.nodered.org/u/Raychen)\
**Replies:** 1\
**Last updated:** [13 June 2018 08:50 UTC](https://discourse.nodered.org/t/parse-two-infos-of-multiple-elements/781 "2018-06-13T08:50:36Z")

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Hey, i want to parse this website: https://www.mydealz.de/ I want to parse the deals. For every deal i want to parse the image path (src) and the title. After that i want to show them on a dashboard. I tried a lot, b…

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## [Is this some sort of spam?](https://discourse.nodered.org/t/is-this-some-sort-of-spam/764)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 1\
**Last updated:** [12 June 2018 15:51 UTC](https://discourse.nodered.org/t/is-this-some-sort-of-spam/764 "2018-06-12T15:51:32Z")

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https://flows.nodered.org/node/prepare-training-data

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## [Using the webcam of the laptop](https://discourse.nodered.org/t/using-the-webcam-of-the-laptop/752)

<div class="topic-metadata">

**Author:** [@Boufahja](https://discourse.nodered.org/u/Boufahja)\
**Replies:** 4\
**Last updated:** [12 June 2018 12:55 UTC](https://discourse.nodered.org/t/using-the-webcam-of-the-laptop/752 "2018-06-12T12:55:47Z")

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How to take a photo with the integrated webcam of my laptop on windows. Wich node i must to use and is there any configuration or any other installations to do ?

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## [Webhook timeout from dialogflow problem](https://discourse.nodered.org/t/webhook-timeout-from-dialogflow-problem/727)

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**Author:** [@scottmclennan](https://discourse.nodered.org/u/scottmclennan)\
**Replies:** 0\
**Last updated:** [10 June 2018 01:35 UTC](https://discourse.nodered.org/t/webhook-timeout-from-dialogflow-problem/727 "2018-06-10T01:35:47Z")

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Does this work? https://qiita.com/HiroyukiYasui/items/6943cc7a636c9d78a9ff

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## [Errors in MongoDB+NodeRED-Watson](https://discourse.nodered.org/t/errors-in-mongodb-nodered-watson/756)

<div class="topic-metadata">

**Author:** [@Hathout](https://discourse.nodered.org/u/Hathout)\
**Replies:** 0\
**Last updated:** [12 June 2018 02:47 UTC](https://discourse.nodered.org/t/errors-in-mongodb-nodered-watson/756 "2018-06-12T02:47:30Z")

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I am using mondo on watson node red. I searched for services on watson and i found that “Compose for MongoDB” is available. I tried to copy the information in the URI into my mongodb node, but nothing is happining. i ca…

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## [ODROID XU4 and NR - just for the thrill](https://discourse.nodered.org/t/odroid-xu4-and-nr-just-for-the-thrill/739)

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**Author:** [@krambriw](https://discourse.nodered.org/u/krambriw)\
**Replies:** 3\
**Last updated:** [11 June 2018 19:32 UTC](https://discourse.nodered.org/t/odroid-xu4-and-nr-just-for-the-thrill/739 "2018-06-11T19:32:42Z")

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Kind of tempted, I was thinking about purchasing an ODROID XU4 with an eMMC to give Node-RED something new to play with. Anyone managed to install NR on an Odroid? Is it possible? The thing is said to support Ubuntu 16.…

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## [DHT11 works only on root](https://discourse.nodered.org/t/dht11-works-only-on-root/740)

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**Author:** [@mshaz](https://discourse.nodered.org/u/mshaz)\
**Replies:** 2\
**Last updated:** [11 June 2018 16:04 UTC](https://discourse.nodered.org/t/dht11-works-only-on-root/740 "2018-06-11T16:04:49Z")

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DHT11 node only runs on pi root . How do i fix this? How do i boot nodered on root ? Is this the way to do it?

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