Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [wireless]

For questions about non-wired communication in IoT devices, particularly where you do not have a specific protocol or transport in mind.

7
votes
2answers
176 views

Suitable wireless technologies for high density industrial IoT

I have a requirement to design M2M communication devices for a factory which has 1000 nodes (machines) within 100m of each other. The devices will be wired to get power and will transmit a payload of ...
5
votes
1answer
65 views

Simulation tools for centralized, decentralized, or distributed wireless sensor network

I want to simulate the collision avoidance between different objects that use (IoT based) centralized, decentralized, or distributed wireless sensor network. What are free software available to ...
7
votes
0answers
35 views

Requirement for a mesh network using Zigbee or similar technology

I have a requirement to design a proprietary monitoring system. (There's some intellectual property involved so I'll describe the system with a slightly altered purpose.) Imagine a large factory ...
6
votes
1answer
76 views

LTE-M, Cat-M1, maybe MQTT - How is data metered? TCP/IP overhead included?

We're looking at adding an option to our product for Cat-M1 data connectivity. The data plans look interesting, but it's very unclear how the data is actually counted. For example... for these AT&...
7
votes
1answer
85 views

How to Use Alexa & Raspberry Pi switch things wirelessly?

I don't know if this has been asked before, and if so, I haven't been able to find it. TL;DR: I wanted to use my Amazon Echo Dot to connect to my Raspberry Pi, and have it turn on switches ...
4
votes
0answers
29 views

Remote control old intercom

My brother has a motor disability and lives in my parents house. He uses an wheelchair and operating the intercom is way too difficult for him. I was thinking to mount an RF relay switch, but ...
9
votes
2answers
252 views

Why are Zigbee hardware modules so expensive?

The Zigbee hardware looks quite simple to produce1, why are they so expensive? For comparison I can get a 855 Mhz wireless module for 2-3€ but I can't find Zigbee modules under 15€. [1]
8
votes
2answers
138 views

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 ...
7
votes
2answers
150 views

Local and distant MQTT communication

In my project I have a set of sensors in a local network that should communicate with a Raspberry Pi 3 and then with a distant MQTT broker. Since I'm using ESP8266 for the sensor nodes I thought I ...
5
votes
1answer
42 views

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 ...
6
votes
2answers
69 views

Which Wireless Frequency Bands could be preferrable for IoT in Aviation?

This question comes in lieu because everytime you board a plane the crew announces that the passengers turn their phones off or use flight mode. The core reason for this is the wireless adapters in a ...
3
votes
1answer
62 views

Is there any surveillance camera that supports UDP broadcast upon motion detection?

I use EventGhost as my IoT hub. The easiest way for me to hook it up with a surveillance cam is UDP broadcast. So my question: Is there any surveillance camera that supports UDP broadcast upon motion ...
-1
votes
2answers
338 views

Device for a motion tracker with BLE/Wi-Fi

I would like to know best alternatives to an Arduino or Raspberry Pi that has to satisfy the following specifications: Has BLE (Bluetooth low energy). Small size (https://www.kickstarter.com/projects/...
4
votes
2answers
115 views

Motion sensor to monitor the movement of people

I'm about to start an investigation about people movement after a surgery (walk basically). I would like to know where should I start to look for movement sensors (pedometer/accelerometer). This ...
10
votes
1answer
106 views

Sensors Communicating With the Pi, BLE / Wifi

I want to place a Pi 3 somewhere in my house and battery powered sensors. The Pi will read the inputs from e.g. the same level, one level above and the garden. So 1-2 regular brick walls in between ...
6
votes
1answer
313 views

Which off-the-shelf wireless door/window sensor can I easily interface with Home Assistant?

I am thinking of setting up my own home security system using Home Assistant. For motion sensors I'm going to build Wi-Fi MQTT transmitters using the WeMos board. But for door sensors I want ...
6
votes
1answer
389 views

How do I check whether a LTE network supports CAT M1?

LTE CAT M1 is a low power communication channel for LTE networks designed for IoT use. How do I check whether a network supports it or not? Carriers' help desk does not know anything about CAT M1. ...
6
votes
1answer
199 views

IoT 2G wireless data - service providers options in USA

What are the service providers options in USA for IoT 2G data? Project scenario: raspberry pi 3 devices that will be collecting data in remote areas I would buy modem modules compatible with the ...
9
votes
2answers
911 views

Creating an HTTP GET polling service on a Raspberry Pi Client

I have the following hardware: 3 x Particle Photons. Each serve as an HTTP Server 1 x Raspberry Pi 3 which will serve as an HTTP Client Upon requesting an HTTP GET to any of the the Photons, the API ...
11
votes
1answer
235 views

Wireless communication technologies for indoor location-tracking

I need to develop a solution for determining whether an object/tag exists within a defined perimeter. The perimeter would be located indoors so GPS isn't an option. It would be an approx 10 metres x ...
5
votes
0answers
249 views

Creating COM serial port between external device (Joule/Arduino/etc.) and PC over Bluetooth w/ linux sdptool & rfcomm (OR another method)

This article is not device specific, but rather is focused on using sdptool and rfcomm to setup a serial com port connection over bluetooth. If you have another method instead of these two Linux ...
6
votes
1answer
497 views

Controlling IoT device through a captive portal/web app over Wi-Fi & 4G/LTE simultaneously

Yeah - mostly some mad scientist stuff here. I have an IoT project I'm working on where each device must be independently connected to each users phone and not connected to any central WiFi network. ...
6
votes
1answer
365 views

Optimal Wireless Technology for High Data Rate & Low Latency IoT Application

I am planning to use the BNO055 Absolute Orientation Sensor for collecting the accelerometer, magnetometer and gyroscopic measurements for an application. As of now I want the data to be sent at a ...
9
votes
3answers
324 views

IoT device (siren) with RESTful APIs

I am fairly new to the IoT world, so I need help designing a system. Scenario: I have an application that sends messages to a Service Bus/ Message Queue in Azure. The messages can be classified into ...
9
votes
4answers
247 views

Which protocol should I use for automation devices in a home environment?

I have a project to automate things in a house. I am a developer but a beginner in electronics and IoT. What should I use to communicate wirelessly? Wi-Fi, Bluetooth... Where should I look? I need a ...
8
votes
1answer
378 views

What should be considered when building a wireless sensor network?

This question originates from a question asking about a specific detail about building wireless sensor networks. While answering the question, I wanted to share some general guidelines for the ...
11
votes
2answers
397 views

Temperature sensors affected by rain

I am not sure if this is the best place to ask a question like this. I am working with a wireless sensor network that measure temperature, humidity and illuminance. I have read that outside sensors, ...
6
votes
1answer
311 views

Availability of Narrow band IoT modules or chipsets

The Narrow-Band IoT radio protocol seems to have been around for a few years, but I'm struggling to identify any manufacturers of devices that are actually available to buy (either from traditional ...
10
votes
2answers
658 views

Power consumption of ANT/ANT+ compared to other wireless sensor network technologies

ANT/ANT+ is a proprietary but open access multicast wireless sensor network technology. It's data rate and the resulting application throughput of 20 to 60 kBit/s is significantly reduced compared to ...
8
votes
3answers
728 views

Difference Between ZigBee and Z-Wave?

I've have installed Z-Wave switches and outlets in a few places around my house. However, I noticed when purchasing the devices that there were a couple of different wireless options available in the ...
18
votes
3answers
333 views

Safety of a smart switch on a fireplace

Would it be unsafe or considered "bad practice" to replace a gas fireplace switch with an IoT enabled smart switch? I would like to think there would be no issue, but, I want to make sure that it's ...
17
votes
1answer
185 views

Adding Devices to Samsung SmartThings

I've got the Samsung SmartThings system installed in my house, but I've encountered a few situations where a new device (e.g. an in-wall outlet) couldn't be found through the SmartThings App on my ...