Internet of Things Stack Exchange
Internet of Things Stack Exchange

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1500 questions
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2 answers

Controlling WiFi switches from physical switch

I'm looking to install smart switches for my lighting. Since I have LED lights and 2-wire circuits to the switches (no neutral), I'm looking at wifi controlled remote relays - which I can find no problem. However, all these switches seem to…
Sean Houlihane
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Can MQTT be used for queuing?

I am building a project which has the following requirements: My hardware device (NanoPi) should access a broker for a video key. The broker should have a queue which will hold the video keys sent by the server and will forward it to the device on…
ron123456
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2 answers

Embedded C—check internet connection

Is there any way to check if actually my embedded device has a working connection (i.e. can reach the WAN)? My device has no RTOS, so I cannot rely on OS functionalities like ping. I can see that the DHCP gives a correct IP to my device, but it's…
panc_fab
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2 answers

Door bell with Wi-Fi camera

I'm looking for a door bell with a camera I would prefer something like 180° fish eye with 4k, but I guess there is nothing on the market so 160° with FullHD should work too. Should I mention that I want night vision too? ;) I checked NEST Hello,…
rekire
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1 answer

Mosquito MQTT Thingsboard and Thingsboard IoT-gateway on same server

It would be much appreciated if someone could tell me the settings to run Mosquito MQTT and Thingsboard with Thingsboard IoT-gateway on the same server. Mosquito is receiving on port 1883 which is working. Were do I need to configure the ports (must…
Frank
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1 answer

What is the maximum Packet Size of a LoraWan including the phy headers

I created a LoRa to USB pass-through via Arduino in order to use it as a temporary gateway for development purposes. So somehow I need to know how big a LoRa packet including PHY headers is, in order to determine how long it will take my software to…
Dimitrios Desyllas
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9
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2 answers

How to get OSRAM Lightity ClientID and secret?

I have an OSRAM Lightify light and a bridge. I am able to operate the light operations using the OSRAM Lightify mobile application. OSRAM provides API support for controlling the light operations. I need to get the authorization code for using the…
joe
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Why is 5G a plus for IoT?

I'd been hearing a lot about 5G recently from a few people I know, and one of the frequent claims that I heard was, "5G is going to be such a great help for the Internet of Things!" I may be a hopeless cynic, but I began to wonder, just why would…
anonymous2
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4 answers

Data visualization and device management

I'm looking for a solution to manage (virtual) devices and visualize data. I have a lot of time series data grouped by sessions and devices stored in a database. That data is coming from multiple physical sensor devices. Now I am looking for a tool…
CPA
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3 answers

Ultra Low Energy point-to-point protocol choice

I am lost in a forest of IoT protocols and need help. I'm looking for right hardware and protocol for my application. I would like to make a device of my own, but use an existing stack and hopefully an existing gateway, my requirements are: Low…
NoobPointerException
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3 answers

How can I programmatically tell a camera where to point?

I don't have a particular camera in mind right now, I'm just curious how this is done, programmatically/mathematically. I have a 3D space, a rectangle, with a camera up in one corner looking inwards. I have a moving object in that rectangle that's…
mal
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In IoT, Is it necessary to involve single-boards such as Raspberry Pi as the only communication devices?

Are single boards always necessary when implementing an IoT connection? Can they be substituted by normal smartphones in, let's say, a business setting so as to communicate to POS/Internet-enabled sale system? I'm not well oriented with Android…
keyboard_kracker22
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1 answer

Are there standardized MQTT topics?

I am new to MQTT (and home automation in general, I am much more in the systems and dev side), flashed a WiFi switch (Sonoff Basic), connected it to an instance of Mosquitto and Home Assistant and so far everything works fine. When monitoring the…
WoJ
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1 answer

Subscibe to specific device with AWS or Azure IoT services

There are 1,000 IoT devices which need to send data to the cloud each second. There is a mobile app. The mobile app user can see messages from a single device at a time only. Is there any simple (built in) way to achieve such subscription to single…
Ingweland
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3G SIM5320 support for MQTT

Looking for feedback from others who have been using the SIM53xx series modules for IoT solutions over the 3G network. I have an MQTT broker on the internet to collect data for a fleet tracking system being developed. There is a lot of information…
deandob
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