Internet of Things Stack Exchange
Internet of Things Stack Exchange

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1500 questions
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2 answers

Is MQTT protocol appropriate for transmitting sensor readings over BLE?

Assume that there are numerous weak sensors (e.g., Arduino level devices) which rely on BLE as means of communication and that these devices are connected to a more powerful gateway (e.g., Raspberry pi level of devices). I would like to know if MQTT…
dr.doom
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Making Amazon Echo / Alexa work outside of US, UK, Germany and Canada

According to Amazon Echo's Wikipedia page, they're only available in the US, UK, Germany and Canada. Echo's Achilles heel is Amazon's unwillingness to look beyond the US. - The Australian However, being primarily an IoT device, they should work…
Coomie
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How can I implement MQTT on an STM32F030K6T6?

The controller in question is an STM32F030K6T6, which has an ARM® 32-bit Cortex® -M0 low power core, 32 kB Flash memory and 4 kB SRAM. It interfaces an SIM808 for Internet connectivity. The resources are quite limited regarding the memory. Is it…
Bence Kaulics
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How can I easily configure Wi-Fi on a smart device without a screen?

I'm making an IoT device that will serve a web app over WiFi which can be accessed to control it. I would like to make it easy to set up. For example, the easiest way I can imagine is as follows; all it would need is a phone or similar with NFC…
Jodes
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7 answers

What IoT services are available for storing/sending/publishing generic data in the cloud?

What IoT services are available for storing/sending/publishing (and opposite operations) generic small amount of data in the cloud? I am looking, for example, for a service where a device could store a value in the cloud. And some other entity…
urnenfeld
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2 answers

What is a good way for an IoT device to receive its network settings?

I'm in the process of building an IoT device using ESP8266. The device will eventually contain a couple of motors, and I would like to control these motors using MQTT. I would like to make the device as cheap as possible, so I would like to avoid…
Mikael Lindqvist
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2 answers

Are there any Bluetooth LE light dimmers with open APIs?

Are there any smart light switches/dimmers that support Bluetooth Low Energy and have an open or accessible APIs? I want to gradually replace all dumb switches in my house with smart switches, but don't want to deal with any proprietary apps. Are…
Ghostrider
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4 answers

Can triggers be chained with IFTTT?

When using IFTTT, it's trivial to connect one trigger (if this) to one event/output (then that). However, I'm interested in using IFTTT for a slightly more complex query, along the lines of "if this happens 3 times, do that". A Quora question…
Aurora0001
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Secure Home Network Partition for IoT Devices

What is the best approach to partitioning IoT devices from non-IoT devices at home? I have heard that setting up separate networks, one for IoT devices and one for everything else, is a good approach. This can be thought of as a three router "Y"…
soundslikeodd
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3 answers

Don’t subscribe to # - so how to dump all messages to database with Mosquitto?

HiveMQ's blog lists under "best practices" not to subscribe to the multi level wildcard when attempting to dump all messages to a database. They claim that the subscribing client may not be able to keep up with a high load of messages and propose to…
Ghanima
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How accurate is Google Home's voice recognition, especially where the speaker has a thick accent?

I'm thinking of purchasing Google Home. In the past I have always had issues due to a 'broad Yorkshire accent' with voice recognition systems. I'm concerned that if I purchase Google Home, my accent will prevent the device from accurately…
Terry
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3 answers

How can I use Alexa to turn on/off multiple lights at the same time with SmartThings hub?

I have various lights/switches/dimmers on a SmartThings hub. I can control them individually, but would like to say something like "Alexa turn on everything" to turn on all lights, or maybe "turn on movie time" to dim the lights turn off the kitchen…
c99StackExchange
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Are there any devices with open-source protocols over Wi-Fi?

I know how to program IoT using Arduino; but I want some ready made portable IoT devices that do not need any programming at device side. Just I want to buy and add these devices to the network (after some configuration) and (by using documentation…
Shahrzad
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4 answers

Is there a way to control my lights from my Linux desktop?

I have just started investigating smart lights. I am interested in using some Wi-Fi sockets in some lamps in my office to automate the lights. I am curious if there is a way to turn my lights on from my PC, and ultimately turn them on when my Linux…
Scorb
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Is the Subscriber-Publisher pattern applicable also to actuators?

There are tons of tutorials on the web, especially with RabbitMQ, on how to publish sensor data; for example, temperature, humidity, etc. Just publish the value to a message queue and anybody can consume it. So far so good. But how about actuators?…
Mat
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