Internet of Things Stack Exchange
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1500 questions
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Nordtronic dimmer module won't connect to hub

I recently bought and installed a Nordtronic Zigbee led dimmer module for the bathroom lights but I have not been able to connect it to a hub yet. I am looking for a solution that also lets me use Siri voice control, so as a hub I bought the Aqara…
Orbit
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Application Server - ThingPark - End to end security

From the LoRa Alliance specification, we know that the LoRaWAN Application Server handles the decryption (uplink) and the encryption (downlink) thanks to the AppSkey. The first thing which is not clear is that Thinkpark is a LNS, so supposed to deal…
Syl Mont
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mqtt scheduler/timer

I am running a few devices in my house to collect data and enable/disable relays. All of the devices are esp8266 nodemcu with pir sensor 5v relays sensors and send over mqtt the data to a RPI that hosts the mqtt broker. Currently i am using…
john
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Can a device like chromecast degrade over time?

I'm having trouble connecting to my chromecast in any apps. Sometimes it works fine and sometimes it just won't work. I can see that it is connected to my WiFi network and I've read the very helpful answers at chromecast-doesnt-show-up. After many…
Jesper
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Any devices that do what the Sonoff Mini R2 does, but is UL rated?

I have 2 Sonoff Mini R2's installed as a part of some remodeling work I'm doing on my house: What I love about these devices is that they allow you to turn any dumb toggle switch (what Sonoff refers to in their doc as an "SPDT switch"). I like…
hepcat72
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LoRaWAN device not receiving Join Accept

I have provisioned my LoRaWAN class A device using OTAA on the ThingPark Community platform. Now, it doesn't seem to receive a Join Accept message from the network as answer to the Join Request that is sent. What could be the issue here?
Lode Van Halewyck
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MQTT client connect to broker have self signed certification

I run c# MQTT broker (in socket not websocket) with self signed certification for TLS in cloud server and now client cant connect to server and get this error message The remote certificate was rejected by the provided…
behroozbc
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LoRaWAN device leaving a network and then coming back... what Join behavior to expect?

For smart-city or industrial campus type of projects, there are devices that leave the network for e.g. 2 days (worker leaving on a week-end), and then come back... but they might remain disconnected for a while until the next Re-join. The LoRa…
Olivier HERSENT
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Does anyone else make a product like the Leviton Smart Wi-Fi 4 Button Controller DW4BC-1BW?

I have an x10 system in part of my home that controls outlets that are on separate circuits from the wall x10 wall switches. I would like to put wifi outlet plugs in the existing outlets (removing the x10 receivers) and replace the wall x10…
chris
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Location Solver with LoRaWAN trackers

We use Abeeway Compact Trackers connected via a ThingPark powered LoRaWAN network to track pallets. Our Application Server receives and decodes messages and stores the location coordinates in a DB so that the App Server can visualise the location…
Norbert Herbert
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How can I identify what kind of IoT device is in my network?

I am trying to build a system in which IoT devices can connect and are classified without the need for manual checks by the system administrator. In this system, IoT devices will send data, and on the basis of that data, they will be classified into…
degr8sid
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1 answer

LoRa inventory application

As far as I know there is no smartphone with Lora builtin compatibility. I'm looking if I can build a inventory solution based on LoRa. Until today the solution was to use the NarrowBand (deprecated in our location) technology with a bar code reader…
Armand
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Publish MQTT message via HTTP GET

I need to make a simple proof of concept, having an Arduino or ESP32 with a couple of LEDs than can be turned on/off via browser. There are a lot of examples about having a small server in the Arduino and accessing it via browser. However for my…
Cincinnatus
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MQTT disconnects from AWS when publishing a message

Please look at this sketch for ESP32. It does nothing but: connects to WiFi connects to AWS MQTT subscribes to the /get/accepted topic every 5 s publish an empty message to the /get topic to retrieve the shadow file #include #include…
Mark
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Is Google Cloud Platform a broker?

I am trying to develop an windows form application on Visual Studio to control a home automation system. I am looking into the MQTT protocol to communicate between an application AMD hardware (using the ESP32). My lecturer told me to subscribe to…
IWherePajamasRegularly
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