Questions tagged [protocols]

For questions about choosing a fitting or identifying a used protocol in IoT applications and systems. If you do know the specific protocol use a more specific tag. Please add specific protocol tags if you are choosing between specific protocols.

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5 answers
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Getting telemetry from Solax Inverter Pocket WIFI

I'm trying to get telemetry from my Solax hybrid inverter which has a "Pocket WIFI" device installed without the information going across the internet (its my data, its sent unencrypted and ...
4 votes
3 answers
3k views

Is Matter, the unified protocol for IoT, usable for hobbyists?

I am a domotics enthusiast and I use some ESP8266 chips for various uses, mostly with HomeAssistant on my RPi. I recently bought some Zigbee devices and the benefits seem very interesting for IoT ...
1 vote
1 answer
108 views

OPC UA vs MQTT for internal interoperability

I am working on a project which will require networking with multiple IoT devices and sensors (scales, temperature sensors, actuated switches, etc.). I am familiar with the MQTT architecture, while I ...
3 votes
1 answer
158 views

LoRaWAN Mesh Protocol

I'm interested in building a network that is based on the LoRaWAN networking protocols. I've seen multiple references to LoRaWAN supporting a mesh configuration (instead of the standard star network ...
-1 votes
1 answer
32 views

How to build a roll call IoT app?

I've brainstormed an idea for an IoT hobby project but don't know exactly where to start in terms of the implementation. Here's the idea. 10 of my friends who live <.5 mile radius of my house like ...
0 votes
0 answers
28 views

Wired Protocol for Home Automation

I am designing a centralised home automation system. Specifications: Switch / Control Lighting HVAC Take inputs from Sensors (temperature, occupancy, etc) Physical Inputs (Switch/Buttons) Mobile ...
1 vote
1 answer
94 views

How do I access my Matter devices when I’m not at home?

How do device developers and major platform providers in the world such as Google Home, Apple, Tuya, and Aqara do to control Matter devices remotely??? Do they still use traditional IoT protocols like ...
1 vote
0 answers
167 views

Tuya pairing protocol

Are there any vendor public or reverse engineered data about the protocol used to pair new device to the Tyua app (using the "easy" mode)? As I understand the process, it is needed to: ...
7 votes
2 answers
14k views

What's the difference between the Pelco D and Pelco P protocols?

Pelco uses 2 different protocols to send PTZ (Pan, Tilt, Zoom) commands to cameras: Pelco D and Pelco P. I'd like to understand the difference from a high-level perspective. Are they meant for ...
1 vote
1 answer
402 views

Has any one developed M-Bus protocol on STM controller?

M-Bus is a building management side protocol which helps to communicate with the controller to get the available parameter values like current, voltage, power etc. I have to develop an architecture ...
0 votes
0 answers
41 views

Control a Sony EVI-D90 PTZ (visca protocol) by using a joystick who is not support visca but only Pelco

That's nice to have such community to look for help when we need. I have a Sony EVI-D90 camera which support VISCA protocol, and I have a joystick controller from HIKVISION DS1003KI which supports ...
0 votes
0 answers
48 views

Is IoMT technologically different to IoT?

It seems from papers such as this that IoMT is just IoT for medical devices with no new technological developments. Is there anything about IoMT such as a standard that somehow differentiates it from ...
8 votes
3 answers
734 views

Is a simple UDP messaging a good idea for IoT Sensor?

I am working with NB-IoT Modem - Quectel BC95 that will be used in a simple IoT sensor that will periodically (Once per hour) send measurements to our server. Because of the restriction in place by ...
13 votes
1 answer
415 views

What connectivity protocol did the Carnegie Mellon University's Coke Machine use?

I've been reading over the web about the history of the Internet of Things, and one of the most interesting things I have run across is the Carnegie Mellon University's Coke machine. According to ...
1 vote
0 answers
50 views

What exactly is an IoT Definition Engine?

So , i was watching an IoT primer video on YT, which i found to be helpful and moderately detailed In the picture shown, they were showing the IoT Reference Architecture ( which i believe to be the ...
3 votes
2 answers
116 views

How to use SSH server on a remote device and overcome routing issues

I am designing an embedded Linux device that acts as a gateway for sensor data. In some cases this device will use a back-haul that I don't control (e.g. customer supplied cell or cable modem). I ...
2 votes
0 answers
55 views

Protocol that supports data integrity with intermittent connectivity?

Currently we are using LwM2M but we are running into use-cases for which we can't find neat LwM2M features. I also looked at MQTT but it seems to have the same struggles. These use-cases include: ...
8 votes
2 answers
519 views

Does CoAP have a lower footprint than MQTT?

I recently read a Quora question about whether CoAP or MQTT is more lightweight, but the answers don't seem particularly satisfying and all contradict each other: the top answer says MQTT takes fewer ...
16 votes
1 answer
479 views

Wired sensor protocol for buildings monitoring sensors?

Assuming I cannot use wireless technologies such as LoRa, LTE-M or SigFox in the environment for the install, I must use a wired sensor protocol to communicate with the gateway installed remotely in a ...
1 vote
0 answers
68 views

Pan Tilt Bracket for CCTV

How can I change the Address of the pan tilt bracket for CCTV (Pelco-D Protocol) with a PC(USB to RS485)? Any software available? I tried with my HIKVISION DVR but couldn't change the default address &...
1 vote
0 answers
108 views

MQTT JSON format for IoMT industry?

W.r.t. formatting the payload content of MQTT messages one usually sticks to standards like SensorML for distributed sensor networks or Sparkplug for IIoT. Are there JSON format schemas/standards for ...
6 votes
1 answer
196 views

MQTT JSON format for process automation industry?

W.r.t. formatting the payload content of MQTT messages one usually sticks to standards. In case the AWS IoT platform is used the format of the payload content is not pre-defined. There's just a best ...
46 votes
6 answers
15k views

When and why to use MQTT protocol?

I am developing a device which measures temperature, humidity and mass. Currently it uses HTTPS to upload data to a remote server. Now I know that there is a protocol called MQTT which is claimed to ...
0 votes
0 answers
42 views

What does the abbreviation "SPINS" for the security protocol for WSN mean?

Since the protocol SPINS is as far as I understand it commonly spread I would like what exactly the abbreviation means in the paper "SPINS: Security Protocols for Sensor Networks" by Perrig et al. he ...
16 votes
2 answers
4k views

How can a device get the SSID and Password of my Network without WPS?

I'm studying ways to make an IoT device access an user´s wifi network. I know about the WPS way, where the device 'broadcast' a signal and the router, after being commanded to listen, 'receive' it and ...
2 votes
2 answers
114 views

How do I minimize cellular data usage for my embedded project?

I have an embedded project that is transferring data from the device to my server over a TLS cellular connection. The device needs to communicate with the server only when the sensor captures some ...
5 votes
0 answers
78 views

Are There any IoT Switches/Plugs that use HPAV Instead of WiFi?

As the number of WiFi devices on a network grows congestion issues start to take hold. Devices farther away from the AP may have trouble maintaining a constant connection, and low priority IoT devices ...
-3 votes
1 answer
59 views

How are journeys tracked via contactless card? [closed]

In London, and soon in Paris also, contactless bank cards can be used to pay for public transport. The system tracks a user's journey, through the "tapping in" and "tapping out" of the user; and then ...
13 votes
5 answers
1k views

Is Bluetooth a good enough protocol for "lost my keys" beacons?

Bluetooth beacons for localizing lost objects are beginning to spread. You can locate them using an app on your smartphone (yes, and create an account, share on facebook your objects, ...) with a ...
1 vote
0 answers
267 views

Receiving Data from MacBAT 5 in python

I need to be able to communicate with a PLUM-EVC, MacBat 5 from a remote server using Python. I have been given parameters, IP and Port which are required to get the data from EVC. I am completely ...
3 votes
2 answers
850 views

How do smart plugs connect to Wi-Fi via mobile applications?

All smart plugs generally have same method of connecting to Wi-Fi and with the mobile application. It's like Check the Wi-Fi light on device Search for device's Wi-Fi broadcast and connect Add ...
1 vote
0 answers
58 views

Zigbee protocol for local indoor sensor like a Beacon (Low Battery) is Possible or exist? [closed]

I would like to start some studies on a new area, look for new solutions, because I already work in an automation company, but first I would like to know if it counts, if it has pros or cons or your ...
2 votes
0 answers
67 views

MQTT implementation recommendation for an IoT device

I have used HTTP/s based REST API for IoT application and it works well but consumes more data bandwidth and power. Also, the server resources consumed are too high for the long polling-based method. ...
2 votes
0 answers
97 views

Looking for MQTT broker and client recommendations

Working to make a network of remote sensors using MQTT I'm looking for an implementation of a broker an a matching client. Requirements broker to be deployed in a cloud server like EC-2 and client ...
5 votes
2 answers
1k views

What is the library to be used to implement CoAP in ESP8266?

I am using Arduino IDE to program my ESP8266. I would like to send data from one ESP8266 module to other. So I would like to use CoAP for this communication. Is there any standard or good library to ...
4 votes
1 answer
69 views

Comparative power requirements of various wireless networking protocols

Does anyone have a real- world comparison of various wireless networking protocols, such as Zigbee, LoRa, BTLE (and BT5, if there any production models to measure), even WiFi (any others)? I am ...
0 votes
1 answer
523 views

Difference between Network, Communication, and Messaging protocol

My understanding is network protocols are BLE, Wifi, ZIgbee, etc. and messaging protocols are http, mqtt, etc. So my questions are: Is my understanding so far correct? Are network and communication ...
11 votes
2 answers
682 views

Protocol for configuring IoT device settings

MQTT is widely used in IoT when it comes to exchanging application data between the end device and the host service. The publish-subscribe model makes it easy to use: no handshaking, negotiating etc (...
6 votes
2 answers
353 views

What are the differences between Modbus addressing zones?

I am trying to implement a control software (client) that communicates with a number of distributed devices (servers) over Modbus. I have been reading device documents to find out where the data I ...
5 votes
1 answer
185 views

Medical data IoT communication protocol?

We are considering connecting a medical device into a hospital patient system we are developing. We are based in the EU and must adhere to the EU Regulation on the protection of personal data ...
2 votes
1 answer
714 views

How Smart Home devices communication works

I have a big doubt that I'm not able to solve. Basically, I want to understand how the smart device that I have in my home communicate with their servers, or better, how their servers can call its ...
1 vote
0 answers
64 views

IoT hub on private network [closed]

I want to make a hub for file sharing in my private network like DC++. Is there any library which I can use or do I have to develop it from start. This can be developed for Arduino or Raspberry PI.
6 votes
1 answer
115 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 ...
4 votes
1 answer
2k views

How to convert messages between CoAP and MQTT protocols?

I am a master student and my topic is about making protocol conversion among IoT communication protocols for example between CoAP and MQTT in order to make the devices that use MQTT protocol to ...
1 vote
0 answers
84 views

OMA Lightweight M2M Protocol

I just stumbled across the OMA Lightweight M2M Protocol (OMA LWM2M) https://www.youtube.com/watch?time_continue=22&v=g-41ZdcTnXc https://en.wikipedia.org/wiki/OMA_LWM2M https://github.com/...
6 votes
1 answer
629 views

WiFi communication between PC and embedded system on LAN

I'm here asking some support for a newbie in embedded communication. My situation is the following: embedded device: STM32L4xx microcontroller + ATWINC1500 wifi module WiFi management code (driver) ...
8 votes
3 answers
172 views

Ultra Low Energy point-to-point protocol choice

I am lost in a forest of IoT protocols and need help. I'm looking for right hardware and protocol for my application. I would like to make a device of my own, but use an existing stack and hopefully ...
8 votes
2 answers
381 views

Why is 5G a plus for IoT?

I'd been hearing a lot about 5G recently from a few people I know, and one of the frequent claims that I heard was, "5G is going to be such a great help for the Internet of Things!" I may be a ...
6 votes
1 answer
67 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 ...
13 votes
6 answers
1k views

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-...