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Questions tagged [aws-iot]

For questions about Amazon's AWS IoT platform, including technical problems and security/reliability questions. Do not use this tag for general questions about IoT!

7
votes
1answer
30 views

How long should a FreeRTOS task be delayed in each loop?

I'm working on an AWS IoT project where the MQTT routines, callback lambdas and kind of everything else apart from initialisation are inside a task created by xTaskCreatePinnedToCore(). This task ...
0
votes
0answers
14 views

What to be considered when overriding the max RX buffer? AWS IoT ESP-IDF

What is the recommended max size of the RX buffer (CONFIG_AWS_IOT_SHADOW_MAX_SIZE_OF_RX_BUFFER)? What needs to be taken into account when overriding it? Is it better to chunk bigger messages?
5
votes
2answers
76 views

How do I build a web application using AWS IoT connecting to a factory floor?

I want to build a web application using aws Iot. I build SCADA systems for different companies. I have a modbus rtu master(raspi) connected to many slaves on a factory floor. Modbus master is ...
1
vote
1answer
38 views

Connect sx1272 module to a Dragino Gateway

I am new to Lora technology. I am using a sx1272 Lora Module and I am trying to send and receive data to a Dragino Gateway. The problem is the sx1272 and Dragino use two different libraries and hence ...
0
votes
1answer
34 views

First steps to learn IoT with watering plants project [closed]

I am an experienced developper, and I want to learn IoT beginning with a small project. Automatic Watering the plants of my house. Here are the requirements: The project is for learning purpose It ...
4
votes
0answers
39 views

Creating nested IoT field gateways with Azure and AWS

From what I have read and understood from their documentation is that only single layer IoT hierarchies can be maintained with either of their gateways. That is a field gateway(sort of like a smart ...
0
votes
1answer
22 views

Is it possible to implement AWS free RTOS on nrf51822?

Is it possible to implement AWS RTOS on nrf51822? If not what is the alternative solution for connecting nrf51822 to IoT cloud?
4
votes
0answers
62 views

MQTT with TLS for TI CC3200 fails with 'Bad CA file' error

This topic seems to pop up everywhere but, without a conclusion as to how to get MQTT-TLS for CC3200 running. So, here goes one more. Goal Connect TI CC3200 board to AWS IoT broker via TLS. Steps ...
5
votes
1answer
65 views

Which is the right way to use AWS-IoT for big quantities of devices?

I'm studying AWS IoT for a big project and I want to understand more about this amazing service, so here I am with a question for you. Each example inside the documentation of AWS IoT talks about one ...
7
votes
1answer
48 views

Subscibe to specific device with AWS or Azure IoT services

There are 1,000 IoT devices which need to send data to the cloud each second. There is a mobile app. The mobile app user can see messages from a single device at a time only. Is there any simple (...
5
votes
0answers
80 views

Deploy Scripts to AWS-Greengrass without AWS-Lambda

Is it possible to deploy to Greengrass from another source besides Lambda? Could I possibly connect to AWS-Greengrass with a client like MQTT.fx and deploy scripts to it? I have tried several times ...
3
votes
0answers
78 views

Call AWS Lambda https end point from AWS IoT rules Engine

We have an existing ASP.Net Core API that we deployed in AWS Lambda. We were able to access the https verbs using AWS Serverless URL Now we would like to access a specific https end point through AWS ...
3
votes
0answers
109 views

How to handle AWS IoT with a Raspberry Pi to connect to my Node.js API?

I created an API in Node.js to connect my iOS app to my database. In my app, I have a button to start an action which will be connected to my Raspberry Pi. This action will happened after ...
4
votes
1answer
184 views

My thing connected to AWS IoT but it does not publish messages

This question is related to this one after you helped me to fix my mistake I have connected to Eclipse broker, it worked just fine, connection and publishing, then I switched to AWS IoT broker with ...
3
votes
1answer
174 views

Using AWS Lambda function to create a monitoring website for IoT devices [closed]

I want to create a web site to monitor my IoT devices, so I went through many tutorials to achieve that. The most common way that is used in the tutorials is writing to DynamoDB from IoT then using ...
9
votes
2answers
94 views

How to link device with user?

I'm trying to learn IoT development using an Arduino and Amazon's menu of services—Alexa Skill Kit, AWS Lambda, and AWS IoT. I've been able to get come a long way, but when I think about implementing ...
3
votes
1answer
195 views

Cannot publish AWS IoT messages from Raspberry Pi

I run a simple publish message from a Raspberry Pi. It seems that my device is connected to AWS IoT, but the message is not publishing and the on_connect and on_publish methods are not invoking. Can ...
7
votes
2answers
66 views

IoT Session duration

A Linux box sends measurements to AWS-RDBMS. A python script opens and closes the connection only long enough to upload data to the database (sessions is closed immediately after update). The ...
9
votes
1answer
207 views

How to decrease AWS IoT button press delay before message publishing?

I am using two AWS IoT buttons to increment a scoreboard. The system works, but there is about a 5 second delay from the button being pressed to until the message from the button is actually published ...
7
votes
1answer
339 views

Error connecting AWS IoT button to Wi-Fi network

I have an AWS IoT button (2nd Gen) that I am able to successfully connect to a portable hotspot and send notifications through, but when I try to reconfigure the button to run on a Wi-Fi network, I ...
3
votes
0answers
191 views

Why can I connect to Wi-Fi with 2nd gen Amazon IoT button but not 1st gen buttons?

I have three Amazon IoT buttons. One is model JK29LP (2nd gen) and two are model JK76PL (1st gen). I had the mac addresses for all three buttons whitelisted for our local Wi-Fi network. I was able ...
7
votes
2answers
203 views

AWS IoT implementation on a low end controller like Atmega328, nrf51822?

I have been using AWS IoT implemented in a RPi for a while. I was wondering if I could use a controller like Atmega328 or some NRF based controllers or STM32 to publish and subscribe to AWS IoT MQTT ...
4
votes
1answer
1k views

Can multiple subscribers subscribe to the same topic from AWS IoT?

Just like what the question asks, can multiple subscribers subscribe to the same topic reading the same message from AWS IoT?
1
vote
1answer
603 views

Connect Webpage to AWS IoT to Publish Messages

I want to create an IoT system. My system contains a robotic arm, a CNC machine and a web page. I want to use MQTT in which I can publish from my web page to robotic arm to pick up the object and put ...
7
votes
1answer
366 views

Can we install Greengrass core for different platform other than Linux?

I'm new to AWS Greengrass and at the phase of learning it functionalities. As instructed in AWS Greengrass, when creating a new group we need to establish a Greengrass core in the cloud definition ...
7
votes
1answer
110 views

Why is AWS Greengrass region specific? [closed]

When I try to go through the AWS Greengrass functionalities it gives me a message saying; "Region Unsupported. AWS Greengrass is not available in US... Please select another region. " Of course ...
6
votes
1answer
81 views

Does AWS Mobile SDK for Android gives capabilities to call AWS IoT REST APIs?

I thought of writing an WebApp to control my Android Phone. What I'm intended to do is My WebApp will call the REST APIs of AWS IoT and send some commands. Using AWS rules engine I store those ...
5
votes
1answer
69 views

Does AWS IoT have Enterprise Mobility Management Capabilities?

I'm new to AWS IoT and I'm currently going through the capabilities of it in order to use it with one of my projects. In my project I need to control Android and iOS devices. What I mean by control ...
5
votes
1answer
343 views

Connect CNC machine to AWS IoT

I want to connect my CNC machine with AWS IoT within a system that contains a robotic arm and sensor. The CNC machine is connected to a laptop and runs with Python code. I want to use MQTT to make the ...
4
votes
1answer
219 views

How can I make an IoT system with a CNC machine and robotic arm? [closed]

I want to create an IoT system with Amazon Web Services. My system contains a CNC machine, robotic arm and sensor. The idea of my project is that when objects come to container the sensor sense the ...
7
votes
1answer
390 views

Connecting web app to IoT AWS

I am using Raspberry Pi as a web server this web is to control CNC machine as you can see in the following picture. (I took it from git hub) I can enter the g code manually or I can upload the g ...
10
votes
1answer
1k views

Can I publish multiple MQTT topics in a single request?

I've got a device with multiple sensors that publishes each sensor reading separately to topics like device1-id/sensor1-id = 10.2 device1-id/sensor2-id = 15.5 [...] We feed it to AWS IoT using ...
7
votes
3answers
1k views

What do I need to make a smart plug work with Alexa and/or Amazon IoT

I live in France and I'm wondering which connected plugs would be compatible with Amazon Alexa (I have imported an Echo from England). I saw a reference to this question How to get Alexa to work with ...
11
votes
2answers
613 views

How can I set up main and failover MQTT subscribers for a job queue with AWS IoT?

I have an system where a client (let's call it ClientA) can publish requests to a particular MQTT topic. The broker, in case it matters, is Amazon Web Services. Then I have another client (let's call ...
13
votes
1answer
637 views

How does an IoT Hub interact with Embedded/IoT devices?

I'm working on the Azure IoT platform and I understand how devices send data to the IoT hub (It's just web service call or something similar to that ... if I'm not wrong). But I wonder how the IoT ...
7
votes
1answer
212 views

When setting up 'Things' in AWS IoT, can I have one thing, and then have many instances of that Thing?

I might be putting this into software terms, but I just want to have all my things be the same type, but have multiple instances (multiple things). Each thing must be able to be referenced ...
7
votes
2answers
91 views

Why might data be sent to a cloud service when it could be processed on the edge?

I was recently reading Amazon's information about the AWS IoT Platform, and came across an interesting example use case: Although they don't describe how exactly the road condition data is sensed, if ...
11
votes
4answers
2k views

Is it a bad practice to keep certificates on external memory?

We're working on AWS-IoT using an STM32 microcontroller. Till today, we were writing the certificates to the flash and locking the flash from external reading. As the application code increases, we'...