Internet of Things Stack Exchange
Internet of Things Stack Exchange

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1500 questions
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What are the differences between MQTT, HTTP, CoAP devices (besides communication protocol)?

I am new to IoT platform and after days of reading I am still confused about different types of IoT devices. Currently, I have read about smart devices that connect to the cloud through different ways like MQTT, HTTP, LWM2M, and maybe more. Are the…
dondon
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Looking for a relay that can be controlled from .net web application (via TCP/IP)

As part of one new requirement for web application I am maintaining, we need to send a signal to a device in a factory when certain conditions are met in the application. Sending a signal is simply short-circuiting 2 wires (physical push button).…
Goran Obradovic
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Are the Smart Lights saving turtles actually Smart?

My curiosity was recently piqued by IOTpodcast.com. They mention in the description of the podcast that one of the things to discuss is how smart lighting is saving sea turtles. I then found this article from smartledconcepts.com which states that…
anonymous2
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Is it ever a good idea to 'roll your own' protocol for IoT device communication?

I've heard many people mention that their embedded IoT devices aren't powerful enough to process known protocols, like HTTPS or even TLS security for sockets. Instead, they turn to creating their own protocol to produce a custom communication system…
Aurora0001
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How to prevent access to a Sonos system

I have a Sonos in a pub (although this applies to any public place which shares the wifi). The router (TP-LINK Archer VR4000) has a guest network and this is locked to not share the local network. It works as expected. The issue is, when using…
MyDaftQuestions
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How can I make hostnames accessible?

I am using the Sonoff-Tasmota firmware to configure ESP-8266 devices for my home automation system. These devices log onto the WiFi network and obtain IP addresses via DHCP. The problem is that after they come up on the network they are not…
Bob Sculley
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How to use telegram api registerDevice for ESP8266?

I can't find any example for this method. I don't want to check the messages via "getMessages" method but want that telegram sends a TCP message to ESP8266, like my mobile or browser receive messages. Here is the method description:…
Andy
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2 answers

Syntax for using HTTP GET with ampersand and float

I am currently working on a wireless gardening project and quite new to this field. My sht10 sensor is connected to Arduino Uno and GSM AT commands is used for wireless communication. I am using HTTP Get method to display sensor data on my web…
knowledgeispower
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Keep my Teddy Bear from being hacked

I recently ran across an article on arstechnica.com which outlines a recently discovered hack for teddy bears. Apparently, Spiral Toys, the manufacturer of Cloud Pets Stuffed Animals, implemented a security breach in their teddy bears which allowed…
anonymous2
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When network provisioning happens through a hotspot (for a headless device), how can I notify the user of a failure when switching to station mode?

When a user connects to the hotspot of a headless device for configuring Wi-Fi credentials for device provisioning and if it fails to connect to Wi-Fi once Wi-Fi credentials are saved, the user doesn't get a notification for error happened as they…
Dipankar
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How to send images using SIM908 GPRS module using LPC2148

I am working on a project in which I have to send an encrypted image via a GSM modem as GPRS or MMS. In this project the transmitter side consists of a PC, ARM LPC2148, and a GSM modem. The receiver also has the same set of components. Now the…
GDayan
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How can Chirp transmit data over sound without getting interference?

I was recently reading about Chirp, a data-over-audio protocol that sends information through (rather literally) chirping sounds either in audible or ultrasound frequencies. One of the use cases suggested on the website is for transmitting game data…
Aurora0001
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How can I report an incorrect response from my Google Home?

Sometimes, my Google Home gets a little confused and completely misinterprets what I've asked (and it seems other people get the same problem quite often). For example, the assistant thinks Home Alone is "everything wrong with Deadpool in 15 minutes…
Aurora0001
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Can we setup a virtualized smart home in VMware for simulation purposes?

I want to assess an algorithm in an IoT network. Can we use VMware to setup a network of devices like TV, fridge as well as laptops and then analyzing service discovery packets which are being exchanged between them?
soltan
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Any real-world HomeWSN deployments?

I searched for "MQTT Rules Engine", and came across the HomeWSN project. It looks like it's almost trying to be a home automation system based on MQTT messaging, which could be very useful. Has anyone deployed a real system based on this tool?
John Deters
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