Internet of Things Stack Exchange
Internet of Things Stack Exchange

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1500 questions
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1 answer

mosquitto - Broker won't start with persistence configuration

mosquitto does not seem to like the following options for persistence. # Persistence configuration persistence true persistence_location /data/qos/ persistent_client_expiration 8h The /data/qos does exist and permissions have been set. sudo chown…
cogitoergosum
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Hacking a Google Home device to put a "hard switch" on its microphone

It's my understanding that Google Home devices all have a soft switch for their microphone; i.e. no physical circuit is broken when you turn it "off". Is it particularly difficult to open it up and maybe add a bit of wiring to convert it to a hard…
D Hydar
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1 answer

Control arduino via MQTT

I working with several arduino board and now I need to control them via a web interface. Via web interface I want to activate GPIO. I have two ideas: Each arduino acts as web server and I can control the GPIO via the Arduino web page. Basically…
Federico
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How to Use Alexa & Raspberry Pi switch things wirelessly?

I wanted to use my Amazon Echo Dot to connect to my Raspberry Pi, and have it turn on switches wirelessly. What I have done: I have been able to use Makermusings's Fauxmo and a relay board to "trick" Alexa to think that the Raspberry Pi is a Wemo…
Nicolas Shu
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How do you clear Alexa music history?

How do you remove an item from Alexa's music history, as shown under the history tab of the music section in the Alexa app?
stovroz
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2 answers

What is difference between a mote and a microcontroller equipped with sensors and connectivity?

Reading some papers about IoT and Wireless Sensor Networks (WSN) I came across mote devices and have seen there are lots of them. I have understood that they are the leaves in an IoT system and that they are embedded devices equipped with sensors…
Francesco Boi
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How would I use HTTPS on the web-based device config running an access point and no internet access?

I'm building a Raspberry Pi-based device for backyard gardeners that has a web page and access point for the initial configuration, including the Wi-Fi configuration. The connection uses WPA2 and the only two devices on that internal network would…
Slow Bro
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1 answer

What's the purpose of a gadget snap in Ubuntu Core?

I've been looking into how to set up Ubuntu Core (the IoT version of Ubuntu) on a Raspberry Pi, and I've read about gadget snaps, which the documentation says is intended to define the device features: The gadget snap is responsible for defining…
Aurora0001
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Will "smart" devices be required to allow import and export of data under the GDPR?

In May 2018, the European Union's General Data Protection Regulation will come into force, and EU citizens will be given additional rights in regards to their data. As well as this, data controllers (organisations that collect data on users) will…
Aurora0001
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How to pass two parameters in header using AT Command with SIM800 GSM modem?

I have a restful webservice with POST method. I want to use this webservice using a GSM Modem with SIM800. I am using following command instruction: AT+SAPBR=2,1 --Check if bearer 1 is open or not AT+SAPBR=1,1 --Enable bearer…
Rudra
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Tasker MQTT to adafruit.io unreliable, how do I troubleshoot?

Overview I'm running Tasker on my Android phone in an attempt to control lights in my apartment through MQTT via adafruit.io. It works, sometimes. I want to make it work every time, but I don't know what is sporadically failing. As far as I can…
gibson
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1 answer

Do TP-Link bulbs provide any API support?

I have a TP-Link LB120 bulb and configured with Kasa app. Now I able to control the bulb using Kasa app. Like turn on, off, change the colour of the light etc. So I need to set up the same things via an API. So let me know TP-Link provides any API…
joe
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Schedule for Lightwave RF thermostat

I have a LightwaveRF thermostatic radiator valve, and a hub to connect this to the internet. Setting a schedule seems particularly problematic. This is the valve in question. I have the option of an Android app, or the website, each seems to have…
Sean Houlihane
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1 answer

How to add payload to a posted MQTT topic?

I am experimenting with node-red, connecting it to my MQTT broker. The input (listening to a topic) works fine. I also would like to send to a topic some payload ipon some triggers. In the example below, this would be on a query to a webservice: I…
WoJ
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How can I monitor, from the cloud (thingspeak e.g.), something not happening?

I have a few use-cases for this but I will use just one simple scenario as an example. I want to monitor my raspberry pi and make sure some tasks are completing properly. I want to add a line in a script to post to the cloud a confirmation when the…
FoxSam12
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