Internet of Things Stack Exchange
Internet of Things Stack Exchange

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1500 questions
6
votes
1 answer

IoT device's soft access point module dropping out at trade show

I have been developing a Wi-Fi remote access IoT device for an electrical control to display at an engineering trade show coming up. Unfortunately I was unable to attend this trade show due to health reasons The problem is that my fellow employees…
user186103
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3 answers

Multiple agents authentication to MQTT

I am building a small IoT platform. I have a webapp reading data from MongoDB. There is a worker that reads from MQTT and stores the data to mongo. Until here, all good. I want to be able to ship an agent to whatever device, be it a RaspberryPi or…
user6334
6
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1 answer

Error: 'NN_DIGIT' does not name a type, while using google-cloud-iot-arduino

I recently started learning IoT with ESP8266MOD (Arduino IDE). I want to start working with Google Cloud IoT, but confused about how to use google-cloud-iot-arduino. I tried its Esp8266-http example, but it gives error: fatal error: String.h: No…
Praveen Soni
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1 answer

Synchronized data between Hardware's storage and Server's database

I saw in China's bus system, that there are devices inside the bus which can handle e-payments. The process is something like this: Passengers come in the bus. Passengers use a QR-code in their smartphone app to wipe on the device's screen (the QR…
juggernaut156
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6
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1 answer

Which is the right way to use AWS-IoT for big quantities of devices?

I'm studying AWS IoT for a big project and I want to understand more about this amazing service, so here I am with a question for you. Each example inside the documentation of AWS IoT talks about one device connected to this service, but how the…
marco.santonocito
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1 answer

Google Home won't respond, waits 30s to a minute and then says "something went wrong" or "there was a glitch"

I had a power surge (could have been a 2-second outage but I don't know) and ever since none of my Google homes have been able to respond to any command. The Assistant just keeps listening (the white dots pulse to ambient noise, even the quieted…
Matt Law
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2 answers

How can an end device authenticate with server using chain of trust?

Looking to add a cryptochip (Atmel ATECC608A) to a product that will be used to communicate with a company server. We want to make sure that only our devices are communicating to our server (authentication). From what I can tell, my company will…
efox29
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6
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2 answers

DS18B20 Oscillating Rapidly

I have an IoT device in the field measuring temperature next to a wind machine. See this video for an explanation as to what a wind machine is—basically a big fan attached to an engine. Last night, while the wind machine was running, I started…
Heath Westbrook
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6
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1 answer

Echo and Wink, how to send a TCP packet to device on local network?

I am looking to create voice control for my stereo receiver. Remote control of the receiver is fairly easy to do by sending specific TCP packets to its IP address. However, I'm having trouble connecting the dots for what would communicate with the…
Jason Capriotti
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Home intrusion detection system - UltraSync 1347 - reliability

Does anyone have information about UltraSync 1347, a system that allows you to control a home intrusion system remotely from your smartphone (receive alerts, arm or disarm the system)? I could not find much info beyond a PDF brochure. At the end of…
youri
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6
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1 answer

Using Arduino LoRa with RFM9X chipset: How to connect the RMF9x NSS pin?

As I am searching on libraries that can be used with Lora and arduino I came across on this one: https://github.com/sandeepmistry/arduino-LoRa Also the RFM9x has the following pinout: The data transfer on this chip is achieved via an SPI Interface.…
Dimitrios Desyllas
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6
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2 answers

Using television Yagi antenna on a public homemade LoraWan gateway

I thought it would be nice to setup my own LoraWan public Gateway in order to extend "The Things Network" network. But in order to do that I think that I will need to use a proper antenna in order to achieve maximum range. So I thought that if I…
Dimitrios Desyllas
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6
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1 answer

Source device for multi-room audio system

I'm looking for a network media player that is capable of outputting multiple audio streams simultaneously. I have Monoprice 6 Zone Home Audio Multizone Controller and Monoprice 4 Zone Home Audio Multizone Controller daisy-chained together to…
Ilya Volodin
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6
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1 answer

Secure pairing support in various RF standards

I would like to understand if secure pairing can be implemented in all (or none?) IoT RF standards. For example: BLE provides Out-of-band possibility, which seems like only really secure option to me. But I have hard time finding information on…
NoobPointerException
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HyperLedger for IoT

Which HyperLedger version is more suited for IoT devices with power/memory constraints (Arduino-like)? In particular, is there a lightweight implementation of HyperLedger Fabric? To be more precise on the power/memory constraints, you can take…
Rexcirus
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