Internet of Things Stack Exchange
Internet of Things Stack Exchange

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1500 questions
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How can I stop my Philips Hue bulbs resetting to full brightness after a power cut?

According to this comment on Reddit, Philips Hue bulbs reset to 100% brightness after any power interruption (e.g. a power cut, switching the physical light switch off then on, etc). This does seem like a useful safety feature, but it's not…
Aurora0001
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Robust GPS + Internet - Best option?

Please consider the following: I am looking to build a device that will be placed in a vehicle as it drives through heavy wooded areas, potentially far away from any mobile reception towers. The hope is for this device to be able to get its GPS…
Aphire
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How does EMQ persist QoS 1/2 messages?

The EMQ (Erlang MQTT Broker) is a "distributed, massively scalable, highly extensible MQTT message broker" with a reported "1.3 million concurrent MQTT connections" - so it potentially allows a large number of clients to publish and subscribe to it.…
Ghanima
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Why would I need multiple Alexa devices in one home?

As a result of this question I have read some articles about Alexa and its wake-words. One of the articles mentions the following: Finally, for people with multiple Echo units, there’s an argument to be made for multiple wake words. The microphone…
Bence Kaulics
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How accurate is the calorie burn measurement of the Fitbit Charge 2?

In academia calorie burn gets measured about the produced heat in a closed system. How accurate is the Fitbit Charge 2 when compared against that gold standard?
Christian
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Connecting a sensor to ZigBee

I am planning to measure water level in a well, which is about 10 m deep with maximum water level up to 5 m. My plan is to use ultrasonic sensor HC SR04 to measure depth, transmit it via ZigBee to a Raspberry Pi inside my home. My question is how…
Raj
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Has anyone designed a custom IoT wall switch?

Are there any custom IoT wall switches designed using ZigBee, weave, Thread, etc. which have the ability to customize its use without forcefully imposing the use of a proprietary gateway or app? I was thinking of using a RPI/Arduino solution to…
Lester T.
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Is it possible to be notified by Amazon Echo when it starts and stops speaking?

I want to change audio source on my home cinema when Alexa is speaking so I need to be notified when it starts and stops.
sorin
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Can Alexa read Kindle books in the United Kingdom?

Is there any way to make Alexa read Kindle books in the UK? I couldn't find any options to do that.
kenorb
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How can Amazon Echo Dot be made for families with children (parental control)?

I have been unsuccessfully researching on how to add parental control for the Amazon Echo Dot. I also read in Amazon Echo, Dot and Tap (Alexa) for Families with Children which indicate that there are no parental control option on Echo…
Mahendra Gunawardena
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can a shelly switch control a different shelly relay?

I have a standard wall switch connected to an input on a Shelly relay, call it A. I have a second Shelly relay (call it B) across the house that has a light connected to the relay output. Using the Shelly Cloud software, can the switch input on A…
longneck
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Are There Energy Monitoring Smart Plugs That Don't Compromise my Privacy/Security?

It seems like every Smart Plug I see on Amazon (including well-reviewed ones) require me to sign up, giving a lot of device, location, and personal information to a company I don't know or trust (often in an overseas country). I'd like to control &…
jfkelley
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What is the difference between the Internet of Things and the Internet of Everything?

As the title says: What is the difference between the Internet of Things and the Internet of Everything and should I care? I came cross two concepts the Internet of Things and the Internet of Everything. Can anyone help me understand: How do the two…
Henry WH Hack v3.0
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Power consumption of ANT/ANT+ compared to other wireless sensor network technologies

ANT/ANT+ is a proprietary but open access multicast wireless sensor network technology. It's data rate and the resulting application throughput of 20 to 60 kBit/s is significantly reduced compared to its competitors, i.e. Bluetooth and ZigBee. For…
Ghanima
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3 answers

Should I use Mosquitto's web sockets or connect clients directly?

According to this blog, Mosquitto (the MQTT broker) now supports connecting to clients over web sockets. The blog article seems to hint that web sockets are more useful for browser applications, since web browsers don't support proper TCP sockets…
Aurora0001
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