Internet of Things Stack Exchange
Internet of Things Stack Exchange

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1500 questions
9
votes
1 answer

How does Thread elect a Leader device?

Thread have produced a document about their protocol, Thread Stack Fundamentals, which I've been reading to try and understand more about how Thread works. On page 5, the document explains that despite having no single point of failure, a Leader is…
Aurora0001
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Z-Wave Device ID changes in Domoticz when battery is changed

When my Z-Wave door sensor's battery ran out, I changed it and checked if it still appeared in my Domoticz interface. The problem is that my device changed its ID and I had to redo all the trigger configuration (call program when opened). I searched…
Goufalite
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1 answer

What can I actually do with a Harmony Hub?

I am considering getting a Logitech Harmony Hub. It's my understanding that I can define activities which can entail using certain commands of the compatible devices. However, I am unable to find what kind of actions I can use within these…
Helmar
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9
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2 answers

Rogue Start-Up of Robot sweeper

I have an Xiaomi Mi robot sweeper and at 7:00:40pm each day it is being started up by a rogue internet message. I saved the active IP table from the DD-WRT router firmware immediately before and after several of the start-ups and have found the…
jerryt
9
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3 answers

Sensors under increased pressure

I am wondering how the DHT 22 (measures humidity and temperature) sensor would work under double or triple atmospheric pressure (rough calculations have been done but it will vary and the exact density being dealt with is not currently known). The…
Kody Rogers
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1 answer

Privacy with Voice Assistants

I am interested in getting a Smart Home system with a good voice assistant, but my wife refuses to allow a voice assistant like Google Home or Amazon Alexa because she does not want ANY recordings from our home being stored in the cloud. For…
Scott Duncan
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9
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1 answer

Lorawan packets datasets

I'm studying Lorawan protocol. I would like to know if some datasets exist to study LoRaWAN packets, parameters and some features.
Pippo Pluto
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1 answer

How can I associate an smart outlet with "lights"?

I recently added a Eufy Smart Plug to my setup. It's currently controlling a floor light. However, Google Home doesn't recognize it as a lamp, so when I say "turn on the lights" or "turn off the lights", it isn't included. How can I tell Google Home…
mjs
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2 answers

Controlling one device using Alexa and Siri at the same time?

Can I have one device set up with HomeKit and Alexa at the same time e.g. a motion sensor, or a smart plug? I must stress I am asking whether it is possible to set up the device with the two services at the same time.
Jeremy
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1 answer

Command not found while trying to flash Android Things

I'm having trouble installing Android Things on an SD card. The card itself seems fine, it's recognised by my Macbook Pro. I'm using the same command i used for the last pi I set up. Below is the command and the response I'm getting back. I'm…
jampez77
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1 answer

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 does few things: connect to AWS, subscribe to topics…
haxpanel
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2 answers

Smart plug for air conditioning unit

I tried connecting my smart plug to my air conditioner, and the smart plug blew up. I was wondering why it blew up and what kind of smart plug will work with my AC: I used the Ardwolf Mini Smart Plug with the above air conditioner.
user77948
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2 answers

Suitable wireless technologies for high density industrial IoT

I have a requirement to design M2M communication devices for a factory which has 1000 nodes (machines) within 100m of each other. The devices will be wired to get power and will transmit a payload of 8Kbps. What is the most suitable wireless…
SamHW17
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9
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2 answers

MQTT multiple topics vs. bigger payload

I am wondering about best practices of topic naming and payload design of mqtt messages. Is it better to have multiple and long topic names instead and a bigger payload or short topic name with bigger payload. For…
CPA
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2 answers

Free MQTT brokers

Are there any limitations ( mainly amount of messages) when using free MQTT server ( such as iot.eclipse.org ), that causes from time to time not to publish messages? I have 2-3 device connected at home, and for testing purposes, publish about 10-20…
guyd
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