Internet of Things Stack Exchange
Internet of Things Stack Exchange

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Why are mesh networks used more frequently for IoT networks?

Many common IoT communication protocols I've researched have adopted a mesh topology (for example ZigBee, Thread and Z-Wave), which is a significant contrast to the usual star topology of Wi-Fi, where every device connects to one router/hub. EETimes…
Aurora0001
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Are there any 'minimal' power meter data loggers?

I mean, a device that will just read, persist, and then push the data to a (my) server without having to buy a 3rd party software license. The data being, in this case, electrical generation/consumption. I've been looking at many "smart" meters and…
mfdebian
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Detecting IoT devices in web browser?

Recently I bought a couple of wifi relays from Xiaomi. While they have been solid so far, I really dislike Xiaomi's app. But, I do like the idea that it actually works both in LAN and over the internet. When in LAN they are very quick to turn on and…
hjf
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Is there a certificate to indicate the security level of IoT devices?

Is there any reliable certificate for IoT devices, which can be used to compare the provided security of these devices?1 Currently, the IoT landscape is completely scattered with different protocols, standards and proprietary solutions. On the…
Helmar
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Is MQTT scalable with 1000+ clients?

Scenario IoT device (currently IPv4 device) that sends via TCP socket a payload to a server once per day. The server has a public IP address, the device is behind a router/NAT. I'm going to use a module based upon ESP8266 (i.e. Olimex one) Goal The…
Mark
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How does a smart switch get its power?

I bought a smart wall switch. The switch it replaced had only 2 wires (in and out). My knowledge of electricity might be only limited, but how can this work? A normal switch just opens a circuit so the current no longer goes through right? So then…
Nathan H
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Are drones considered part of the IoT by any officials?

To clarify what classifies a device as IoT on a specific example, are all flying drones (UAV) part of the Internet of Things? Or there is some minimum requirement to classify it as IoT? What's the stance of the relevant standardization…
kenorb
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How does the Z-Wave certification process guarantee interoperability?

The Z-Wave alliance guarantees interoperability though their certification process on their main site: Z-Wave encompasses a broad ecosystem of smart products and services that work seamlessly between brands and versions. This interoperability,…
Dom
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Choosing appropriate protocol for IoT Application

We have at work an IoT scenario where the Thing/Constrained Device sends its GPS position in a regular interval to a given server. The constrained device is an Arduino-like board that is battery-powered and uses a GSM/SIM shield for connectivity.…
bgusach
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What voice commands for Philips Hue lamps does Amazon Echo offer?

I'm thinking about getting some Philips Hue lighting equipment. I'm thinking of something along the lines of this one as a starter kit. I already have an Echo Dot. The marketing buzz is great and both the Hue products highlight that they work with…
Helmar
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802.11 action frames send and receive in software

Is it possible to gain access to 802.11 action frames TX/RX from software? There's a proprietary protocol based on vendor-specific action frames called ESP-NOW for ESP8266 and ESP32 chips, and I'd like to try to implement it on a Raspberry Pi. It…
Alexandr Zarubkin
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Can Philips Hue bulbs run schedules while the bridge is off?

I understand I need the Philips Hue Bridge to control Philips Hue lights. Let's say I set everything up and configure a light to go on/off on a schedule (turn on light in evening, turn off in morning). Then I disconnect the Bridge (unplug/power…
Nitramk
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What, exactly, makes SPECK and SIMON particularly suitable for IoT devices?

For some IoT devices, the data that needs to be sent is confidential, and hence sending it in plain text is not acceptable. Therefore, I've been considering how to encrypt data sent between IoT devices. An article I recently read on the RFID Journal…
Aurora0001
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Can I implement ZigBee with generic hardware?

As I understand ZigBee is only a specification of a data transfer protocol. So I was expecting to find some library that implements this protocol to use it with my MCU and RF transceiver. Instead, I only have found specific ZigBee devices (e.g.…
rattrapper
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Tracking exceptions and errors in production IoT devices?

How are companies tracking errors on IoT devices, gateways and platforms at present? My company is using papertrail to aggregate logs from all devices, however this often leaves us scratching around between multiple systems when an error occurs in…
hookd
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