Stack Overflow
Stack Overflow

Questions tagged [node-red]

Node-RED is a data-flow programming tool for wiring together hardware devices, APIs and online services in new and interesting ways.

Node-RED provides a browser-based flow editor to wire together flows using the wide range of nodes in the palette. A built-in library allows you to save useful functions, templates or flows for re-use.

The light-weight runtime is built on Node.js, and utilizes its event-driven, non-blocking model. This makes it ideal to run at the edge of the network on low-cost hardware such as the Raspberry Pi as well as in the cloud.

Problems that may require back and forth debugging may be better asked on the mailing list.

Official Website

Forum

GitHub

Library

Documentation

2181 questions
0
votes
1 answer

Node-Red Indicator on the Dashboard

I am sure it is very easy but I am struggling. I am trying to use a button as an indicator on the Node-Red Dashboard from a Modbus TCP connection as the picture shows: The formula in the function is as follows: if (msg.payload === 28){ …
Infernez
  • 73
  • 7
0
votes
1 answer

Send command using Node-RED v.0.18.7

I want to send command to Raspberry Pi, so I deployed the watson iot input and output node. And I referenced the last 2017 document. However, in this version I used (Node-RED v.0.18.7), it is different example. (without output type and input type in…
구자훈
  • 1
  • 1
0
votes
1 answer

Request stored data to IBM Watson IoT Platform Cloud

I have connected Raspberry Pi to IBM watson-IoT platform Cloud using Node-Red. I send the Pi's cpu temperature to Cloud, and checked dashboard. I want to request the stored data from other raspberry Pi. So, I am tring [http request-http response]…
구자훈
  • 1
  • 1
0
votes
1 answer

How to configure mongodb with nodered on bluemix?

I need to store data on bluemix using nodered, but i do not know how to set the condfiguration of the mongodb node?. I searched the internet and i find that there were a service called "mongolab" that you should add to your organization to be able…
Hat hout
  • 471
  • 1
  • 9
  • 18
0
votes
1 answer

Connect Raspberry Pi 3 to the IBM Cloud using Node-RED

I referenced the [Configure a Raspberry Pi and connect it to Watson IoT Platform] In that, I am using Node-RED of Raspberry Pi 3 and send the data to IBM Cloud. I use the Function Node for transform to Watson IoT Format, So, I write the code in…
구자훈
  • 1
  • 1
0
votes
0 answers

node-red-dashboard - angularJs round value up or down - minutes to hour conversion

I've an input number that is the total minutes i.e. 59870 this is the value show in a format of hh:mm {{ (msg.payload / 60|number:0)-1 }} : {{msg.payload % 60 | number:0 }} thta will output 998:50 but actually it should be 997 hours. How can I…
user2239318
  • 2,578
  • 7
  • 28
  • 50
0
votes
1 answer

Two nodes stay linked after deleting wires

I have created a node in node-red. When I delete the wire connecting to to another nodes the wire disappears I then deploy the entire flow and although the wire is deleted the node continues to affect the node it was previously joined to. There are…
Joss Bird
  • 295
  • 1
  • 4
  • 19
0
votes
1 answer

Insert data using Node-red to external mongoDB

I'm new at Node-Red & Javascript. I'm trying to insert some "key:value" to external MongoDB (not the MongoDB inside the Node-red but rather external one using mlab.com service). I've got from mlab (who holds the DB for me) link to insert some data…
y.vachnish
  • 5
  • 3
0
votes
0 answers

Watson Assistant NodeRed Node doesnt accept the new IAM security credentials

is there a node red Watson Assistant node update that uses the new IAM security credentials? The existing node asks for username and password which is no longer provide in the new IAM credentials.
Stuart
  • 11
0
votes
0 answers

How can i set SQL TAB as reference values for compare with another tab in Node-RED

I have two tab in sql , TAB1 and TAB2. I want to use ; last element TAB2 as reference values. avarage of TAB2 as reference values. max and min element of TAB2 as ref val. What i did ---- I can take last element of TAB2,average of TAB 2 and…
Mehmet Ali Küçük
  • 11
  • 6
0
votes
1 answer

Node-Red - Access a Password protected SQLite Database

I am using a SQLite database in my node-red application. For security purposes, the database is password protected. Is there any way to supply the password to the SQLite node within the Node-Red Flow? If remove the password from the database then…
Smithy
  • 771
  • 10
  • 29
0
votes
1 answer

Node-red: How to configure TCP in by msg or dashboard

I am currently making a gateway that require TCP configure by dashboard. I want to configure the port listening on by a input msg, however tcp in node does not take an input. I would like to know that is there a way to pass a msg input to configure…
Zhan Xianyi
  • 1
  • 1
0
votes
0 answers

Node-Red-Dashboard UI_Gauge on RPi3 / Ubuntu Mate 16.04 does not change with payload

I have the problem that my UI_Gauge does not change with a changing payload. I used the debug node to check if the value is actually changing (it is), also I send a text info as value format which changes correctly. This functionality do I…
Boernii
  • 131
  • 1
  • 3
  • 12
0
votes
1 answer

Using SSH tunnel to connect to remote MYSQL database from Node-Red

I have a set of data rolling out of Node-Red that I want to send to a remote MYSQL database. The Node-Red system is running on a Raspberry Pi. How do I make this work? I know how to it using Node.JS but im not sure how to do this in Node-Red. The…
Tom van Nes
  • 27
  • 8
0
votes
1 answer

Node RED adminAuth not working

I am using node v0.18.4 on a raspberry pi 3 Jessie. I want to secure the node-red editor, for which i followed the security.html page provided by node red and also I watched a video on youtube. I did the exact same steps, which are:- 1) Go to…
Namah
  • 79
  • 2
  • 10
1 2 3
…
99
100