Most viewed questions in IoT (Internet of Things)

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Connect to external server through Socket.IO from Node.js

I think the server you're connecting to ...READ MORE

Nov 21, 2018 in IoT (Internet of Things) by nirvana
• 3,060 points
2,318 views
0 votes
1 answer

AttributeError: 'module' object has no attribute 'Serial'

I see where the problem is. I ...READ MORE

Aug 14, 2018 in IoT (Internet of Things) by DataKing99
• 8,130 points
2,067 views
0 votes
1 answer

Postman: Error “Unsupported Media Type” for send notification

Postman Check this link out. or maybe schemas any field ...READ MORE

Apr 29 in IoT (Internet of Things) by Upasana
• 8,550 points
2,053 views
0 votes
1 answer

comparision between OPC UA protocol and MQTT protocol

This is the first time I'm seeing ...READ MORE

Sep 4, 2018 in IoT (Internet of Things) by Upasana
• 8,550 points
1,650 views
0 votes
1 answer

Faster communication between two ESP8266 in client-server setup

Try following. Server loop void loop() { // ...READ MORE

Jul 13, 2018 in IoT (Internet of Things) by anonymous2
• 4,260 points
1,635 views
0 votes
1 answer

How to send a data from arduino uno to a webpage through esp8266 wifi module?

You are missing a few \r\n and the length ...READ MORE

Aug 9, 2018 in IoT (Internet of Things) by anonymous2
• 4,260 points
1,591 views
0 votes
1 answer

What is the maximum message length for a MQTT broker?

It's not entirely clear what you're asking ...READ MORE

Jul 17, 2018 in IoT (Internet of Things) by anonymous2
• 4,260 points
1,541 views
0 votes
1 answer

How to trigger Python script on Raspberry Pi from Node-Red

Node-RED supplies an exec node as part ...READ MORE

Sep 14, 2018 in IoT (Internet of Things) by Upasana
• 8,550 points
1,198 views
0 votes
1 answer

Mosquitto vs eclipse paho - Difference in both client libraries

I was stuck with the exact same ...READ MORE

Nov 22, 2018 in IoT (Internet of Things) by nirvana
• 3,060 points
1,157 views
0 votes
1 answer

"message": "Credential should be scoped to correct service." - AWS IoT

You should sign your request with iotdata ...READ MORE

Oct 9, 2018 in IoT (Internet of Things) by DataKing99
• 8,130 points
1,082 views
0 votes
1 answer

Error: Please ensure that target device has developer mode enabled. Could not obtain a developer license

That's because the XAML designer on Visual ...READ MORE

Sep 5, 2018 in IoT (Internet of Things) by nirvana
• 3,060 points
1,037 views
0 votes
1 answer

PWA : Using Bluetooth in my phone in Progressive Web Apps

Yes, you can access in Geo Location(for ...READ MORE

Dec 20, 2018 in IoT (Internet of Things) by Shubham
• 13,350 points
984 views
0 votes
1 answer

Transfer Data from Arduino Board to SQL Server

If you want to send it to ...READ MORE

Aug 29, 2018 in IoT (Internet of Things) by anonymous2
• 4,260 points
904 views
0 votes
1 answer

Postman : Generating an output as a random number

Try generating your random value in the ...READ MORE

Feb 12 in IoT (Internet of Things) by Upasana
• 8,550 points
842 views
0 votes
1 answer

Integrating Arduino to Apache Kafka

If you are using Arduino Yun to build your IoT application(s), ...READ MORE

Sep 27, 2018 in IoT (Internet of Things) by anonymous2
• 4,260 points
837 views
0 votes
1 answer

Spring Boot application freezes after a day

You can mitigate the idle connections problem ...READ MORE

Jul 26, 2018 in IoT (Internet of Things) by anonymous2
• 4,260 points
833 views
0 votes
1 answer

Integrate IoT device to Azure using MQTT

Today there isn't an official support for ...READ MORE

Sep 24, 2018 in IoT (Internet of Things) by anonymous2
• 4,260 points
807 views
0 votes
1 answer

Azure IoT Hub : Sending messages using Python via mqtt

The thing is that IoT Hub is not ...READ MORE

Jan 4 in IoT (Internet of Things) by Upasana
• 8,550 points
806 views
0 votes
1 answer

Where is published message stored by mosquitto broker if offline?

Well, of course, they are stored! That ...READ MORE

Aug 10, 2018 in IoT (Internet of Things) by nirvana
• 3,060 points
780 views
0 votes
1 answer

MQTT pubish is slow to send with ESP8266 & NodeMCU

I think you're almost correct and on ...READ MORE

Aug 1, 2018 in IoT (Internet of Things) by nirvana
• 3,060 points
772 views
0 votes
1 answer

Using Google Maps to track GPS enabled Arduino Board

What is the GPS Module which you ...READ MORE

Sep 6, 2018 in IoT (Internet of Things) by anonymous2
• 4,260 points
747 views
0 votes
1 answer

Pair and connect new devices using Bluez5 DBUS API with C++

Although high-level APIs like Qt5, which also ...READ MORE

Oct 8, 2018 in IoT (Internet of Things) by nirvana
• 3,060 points
740 views
0 votes
1 answer

Eclipse Paho: read data from MQTT Broker

From what I could analyze, you've been ...READ MORE

Aug 8, 2018 in IoT (Internet of Things) by DataKing99
• 8,130 points
728 views
0 votes
1 answer

Testing if messages from my Device is reaching the Azure IoT Hub?

Download the Device Explorer open source tool ...READ MORE

Aug 10, 2018 in IoT (Internet of Things) by DataKing99
• 8,130 points
707 views
0 votes
1 answer

MQTT and NodeJS Communication

Now the cloudmqtt and nodejs server is connected by giving extra ...READ MORE

Sep 25, 2018 in IoT (Internet of Things) by anonymous2
• 4,260 points
692 views
0 votes
1 answer

TRIM_HORIZON: AWS definition for DynamoDB Triggers (Streams + Lambda)

Here's what I found in the DynamoDB's ...READ MORE

Nov 15, 2018 in IoT (Internet of Things) by DataKing99
• 8,130 points
654 views
0 votes
1 answer

How to use the data I receive from Azure IoT Hub?

The payload you receive will be a ...READ MORE

Aug 1, 2018 in IoT (Internet of Things) by DataKing99
• 8,130 points
652 views
0 votes
1 answer

Certificate issue in Azure IoT Hub

I've fixed this problem: The configured CA certificate ...READ MORE

Oct 11, 2018 in IoT (Internet of Things) by anonymous2
• 4,260 points
640 views
0 votes
1 answer

MQTT : Connection lost on MQTT subscriber to Internet of Things Server

An invalid topic "matteo" seems to be causing the ...READ MORE

Oct 3, 2018 in IoT (Internet of Things) by Annie97
• 2,190 points
619 views
0 votes
1 answer

How to get percentage value of different gases using the MQ135 gas sensor

I don't think the MQ135 can do ...READ MORE

Aug 23, 2018 in IoT (Internet of Things) by Upasana
• 8,550 points
612 views
+1 vote
1 answer

Django and IoT

You can use any framework that fits ...READ MORE

Jan 23 in IoT (Internet of Things) by Upasana
• 8,550 points
608 views
0 votes
1 answer

MQTT protocol connection error

Ok so you need two libraries to ...READ MORE

Jul 6, 2018 in IoT (Internet of Things) by anonymous2
• 4,260 points

reshown Jul 6, 2018 by Vardhan 599 views
0 votes
1 answer

Problem while disconnecting BLE device!

I think that's because of the way ...READ MORE

Jul 17, 2018 in IoT (Internet of Things) by nirvana
• 3,060 points
585 views
0 votes
1 answer

TCP in Azure IoT Hub

The default Protocol Gateway samples are indeed ...READ MORE

Oct 11, 2018 in IoT (Internet of Things) by DataKing99
• 8,130 points
565 views
0 votes
1 answer

Downloading source code of Android Things

No because AndroidThings is still in preview ...READ MORE

Jul 5, 2018 in IoT (Internet of Things) by anonymous2
• 4,260 points
547 views
0 votes
1 answer

Sending CoAP requests using Python

It can be done using a library ...READ MORE

Aug 24, 2018 in IoT (Internet of Things) by nirvana
• 3,060 points
546 views
0 votes
1 answer

Sending data to a page using the ESP8266-01 wifi-module from Arduino

Well, I think there are some \r ...READ MORE

Aug 9, 2018 in IoT (Internet of Things) by nirvana
• 3,060 points
535 views
0 votes
1 answer

Arguments in boto3 AWS client

As long as you're explicitly providing credential ...READ MORE

Feb 11 in IoT (Internet of Things) by Shubham
• 13,350 points
530 views
0 votes
1 answer

Difference between MQTT and Apache- kafka

MQTT is a standard protocol (with many ...READ MORE

Aug 31, 2018 in IoT (Internet of Things) by Upasana
• 8,550 points
514 views
0 votes
1 answer

Mosquitto broker- Horizontally scaling

For accuracy, let me mention that other ...READ MORE

Sep 5, 2018 in IoT (Internet of Things) by Upasana
• 8,550 points
506 views
0 votes
1 answer

"MqttException (0) - java.io.IOException: Already connected"

Oh man, that was a heck of ...READ MORE

Jul 17, 2018 in IoT (Internet of Things) by DataKing99
• 8,130 points
505 views
0 votes
1 answer

Intel Galileo Vs. Intel Edison?

Intel Galileo Key Features: Type: Single-Board Computer CPU: Intel Quark ...READ MORE

Aug 20, 2018 in IoT (Internet of Things) by DataKing99
• 8,130 points
499 views
0 votes
1 answer

Connection and publishing operations using paho-mqtt not working on AWS IoT

I'd say your issue is mainly that ...READ MORE

Mar 11 in IoT (Internet of Things) by Upasana
• 8,550 points
484 views
0 votes
1 answer

USB Mobile Broadband Modem on Windows 10 IoT

I was looking for a solution too, ...READ MORE

Jul 9, 2018 in IoT (Internet of Things) by anonymous2
• 4,260 points
477 views
0 votes
1 answer

Publishing commands to device in IBM IoT using MQTT in Java

If you are publishing from an application, ...READ MORE

Jul 27, 2018 in IoT (Internet of Things) by anonymous2
• 4,260 points
473 views
0 votes
1 answer

Using Sleep()/Delay() in C# on Windows IoT

You'll be glad to know that C# ...READ MORE

Aug 28, 2018 in IoT (Internet of Things) by DataKing99
• 8,130 points
466 views
0 votes
1 answer

NodeMCU HTTP : How to use HTTPS post request?

Your firmware might not have SSL/TLS enabled. ...READ MORE

Feb 11 in IoT (Internet of Things) by Shubham
• 13,350 points
458 views
0 votes
1 answer

Failure of JSON parsing in Arduino and ESP8266

I'm assuming it's because of the garbage ...READ MORE

Dec 24, 2018 in IoT (Internet of Things) by Upasana
• 8,550 points
449 views
0 votes
1 answer

AWS IoT login from android MQTT client using IAM is not working

Seeing your comments and questions. I had ...READ MORE

Jul 24, 2018 in IoT (Internet of Things) by anonymous2
• 4,260 points
443 views
0 votes
1 answer

Android M - Sending request over WiFi (without connection) when Mobile data is ON (with connection)

Binding the network using ConnectivityManager.setProcessDefaultNetwork() will help ...READ MORE

Oct 11, 2018 in IoT (Internet of Things) by nirvana
• 3,060 points
403 views