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.

Use this tag for questions that are about choosing a fitting or identifying a used protocol in IoT applications and systems.

Consider the question check list if your question fits the tag. You can also look at the example questions. If this tag doesn't fit your question have a look below at somehow related tags that might fit your question better.

Question checklist

  • Is the question either about choosing a fitting protocol for an IoT application?
  • Or is the question about identifying a protocol that an IoT device uses?
  • Is choosing or identifying a protocol the core of your question?

Example questions

Not what you are looking for?

  • Use for questions about setting up and configuring networks for your IoT devices in general.
  • Add or use instead tags for specific protocols if you do know them, e.g. , or .
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Contacting Arduino through internet without port forward

I have an Arduino board connected to a Wifi network which have internet access. What I want is, I need to contact this Arduino board from any other network without the help of port forwarding in the home network of Arduino. Currently what I am doing…
Jithesh Kt
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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 various articles I have read, including this one…
anonymous2
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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 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 want to collect is stored in registers, but I never…
Seth
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How can Chirp transmit data over sound without getting interference?

I was recently reading about Chirp, a data-over-audio protocol that sends information through (rather literally) chirping sounds either in audible or ultrasound frequencies. One of the use cases suggested on the website is for transmitting game data…
Aurora0001
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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 can reduce signal quality for things like smart…
Andrew C
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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 stored in a country whose values I do not share, and also…
davidgo
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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". Command 20, 26 works but the saving…
Saif-Rajon
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List of important IoT references

This is a list of useful references and resources in the IoT environment. Standardization Bodies IoT Protocol Specifications If the accompanying meta post will validate the usefulness of this question, I'll ask the SE staff to make it CW.
Helmar
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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/OpenMobileAlliance/OMA_LwM2M_for_Developers Would this…
Rexcirus
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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 to get together often. I want to give all my friends…
DW2702
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How are journeys tracked via contactless card?

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 charges them the appropriate amount for the…