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.

16 questions with no upvoted or accepted answers
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Send wirelessly very small amount of data

I need to transfer wirelessly a message of maximum 5 bytes of data (including everything such as start bits, stop bits etc etc). What I tried: Empty Ethernet package is at least 56 bytes according to ...
5
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0answers
317 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 ...
4
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2answers
92 views

Is there a wireless video doorbell that will chime on Google Nest speaker?

Most smart doorbells (e.g. Google Nest Hello doorbell) seem to require a wired connection. The Ring wireless doorbell looks like the most popular but compatibility with Google Assistant looks poor. I ...
4
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0answers
213 views

MOXA Modbus with Raspberry Pi – Can't get slave to work

I have two Moxa modbuses that I have daisy-chained together, and then connected to my network's ethernet port. The modbuses are hooked up to a control board with LED lights for the coils and buttons ...
4
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0answers
69 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 ...
3
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0answers
228 views

Using RPC in IoT environments

I would like to use RPC for communication between fog nodes. As the connection between the nodes is wireless (802.15.4), I don't want to use an RPC framework that uses HTTP (like gRPC). I know that ...
2
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0answers
677 views

How to take data from multiple BLE devices into a central device simultaneously?

Firstly, I am very beginner in BLE domain. I have very little knowledge about it. I have Adafruit Feather 32u4 Bluefruit LE module. I want to do a project where multiple BLE peripheral devices ...
2
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0answers
35 views

Industrial programmable radio transceiver

(I hope this kind of questions are tolerated here. Otherwise, please say it in the comment and I will delete the question) I have to create a wireless network of over 200 devices, placed in the same ...
2
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0answers
62 views

Sigfox Callback CustomValue's issue Sending NULL instead of wanted values

I'm working on a project, and I want to use a Sigfox callback to send some data. But when I want separate my payload as I coded it, all my values on Callback are NULL. This is my Callback, and this ...
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0answers
33 views

Are there still any cheap hardware solutions to providing IoT devices with cellular connection with the shutdown of 2g networks

I am currently attempting to design a small custom PCB based IoT business cards that communicate over a cellular network for the purpose of impressing employers. Since I will literally be giving these ...
1
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1answer
56 views

Cannot connect to softAP hosted on ESP32 IoT device on Windows 10

I have an IoT ESP32 device that needs to be configured through its softAP WiFi. When I enter the credentials of that network I get "cannot connect to network". I suspect that it's because ...
1
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0answers
101 views

How to send GPS coordinates to a SQL database from my GPS+GSM device?

I'm getting ready to start building a simple wireless GPS device. This device will use an arduino, and a cellular GSM module paired with a GPS device (an example is the SIM5320a aka the FONA 3G from ...
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0answers
23 views

RF interference for ultra low power wireless device

Is it routine and/or has anyone performed tests on active interference when developing ultra low power wireless devices? You area going to test range of your device and tune your antenna/matching ...
0
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1answer
23 views

Which radio technology for long distance, high(er) power, IP traffic?

I'm looking to build a long distance IP star network using one of the IoT PHY layers but unsure if LoRa is right. An ideal solution would be something to the effect of 915Mhz WiFi or WiFi HaLow ...
0
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0answers
30 views

Suitable graph generator for models of homogeneous WSNs with 100 to 300 nodes?

Which graph generation models are suitable as representation of large-scale (100-300 nodes) homogeneous wireless sensor nodes, in case I am only interested in the interconnection of those nodes and ...
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32 views

Most efficient wlan module for a bunch of rcars

I want to build up a rc car on my own which I can connect/steer via an app - either smartphone or computer. Not decided, yet. I also want to use multiple cars, each for a friend so let's say in the ...