All Questions

0
votes
0answers
2 views

IoT Standards for data format when uploading to clouds or servers

What are some IoT Standards that provide a format or framework for representing data to be sent to cloud? The problem often faced is: one tends to have information from sensor nodes and edge nodes ...
0
votes
1answer
26 views

Connect to MQTT Server without opening port

I have a MQTT client in an internal network and an MQTT server somewhere in Cloud. How can I connect to MQTT Server without opening port in the Client network? thanks.
5
votes
0answers
27 views

MQTT subscribing is not working

I am working to connect my server to the clients via an MQTT broker. The mqtt client gets connected. But after publishing a message, the subscribe code receives a connection acknowledgment. The ...
0
votes
0answers
5 views

Multitech mDot ARMmBed i2c communication with Arduino [migrated]

I'm struggling with this task. I've successfully managed to flash the firmware to an mDot and receive on the gateway some dummy sensor data (just based on this example: https://github.com/ARMmbed/mbed-...
4
votes
2answers
29 views

WLAN Hotspot Internet sharing possibilities?

I figure this is the best place to ask. Many IOT devices need to be connected to a network, and sometimes require Internet access, but not 100% of the time. Usually it's fine to just connect them to ...
2
votes
0answers
25 views

What is the difference between IoT and a Smart Environment?

I have read through a number of papers with a focus on either Smart Environments or IoT. Another paper uses IoT and Smart Environments in the same context, almost interchangeably, which makes me ...
-1
votes
0answers
12 views

Sonoff 4CH Pro - how to connect to DC socket [on hold]

does anyone know what size plug fits the DC socket on the Sonoff 4CH Pro? Is it a 5mm one? And what is the polarity? Unhelpfully, the Sonoff website doesn't say... thank you!
0
votes
0answers
19 views

How to send WIFI credentials to ESP32?

I would like to know what are the available ways one can send wifi creds to esp32 other than using wifimanager.
0
votes
0answers
8 views

What is the reason for RTCWDT_RTC_RESET in esp32?

My device has been frequently resetting with reset reason RTCWDT_RTC_RESET. The output core dump does not show the line at which this happens. What are the resons for this restart?
1
vote
0answers
18 views

ESP32: Timestamp cannot be sent by MQTT

for one week I am searching for a solution at my ESP32 project (development over Arduino IDE): In my project I execute the following step: Read Temperature via BME280 Ask time at NTP server (via time....
1
vote
0answers
24 views

Why is Mosquitto broker and Paho client running CPU 100% on connection?

I would like to use the mosquitto MQTT broker using Websockets. I am running mosquitto version 1.6.2 on a Debian 8 server. "normal" MQTT works fine, but I am having a problem trying to connect using ...
4
votes
0answers
19 views

How to structure connection slots for WiFi clients

Say we have hundreds of WiFi clients that pretend to connect to a single router. The firmware on the clients is modifiable. I'm aware the routers can handle only few dozen of clients at time. Because ...
0
votes
0answers
27 views

Which Pressure sensor in Netatmo weather station

I have been trying to figure out which barometric sensor that is being used in the Netatmo weather stations (netatmo.com/weather) to measure the atmospheric pressure. I have disassembled the indoor ...
2
votes
0answers
23 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 ...
1
vote
0answers
15 views

Intrusion alert system for rugged environments iot, sensors [closed]

We are developing an IoT based intrusion alert system for the agricultural field. The plan is to have vibration sensors installed over the fence on the periphery of agricultural land Required ...
1
vote
0answers
8 views

Is it possible to send data to AMQP server using AT-Command on ESP8266 Wi-Fi module?

I'm currently working on an IoT project which I have an STM32F0 connected to the ESP8266 Wi-Fi module. My goal is to publish data to an AMQP server. Currently, I'm trying to connect to an AMQP server(...
2
votes
1answer
18 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 ...
1
vote
0answers
37 views

Suggestions for vehicle sensors for parking lots [closed]

I am looking for wireless vehicle sensors that could be laid out on the ground to detect if a parking spot is occupied or not. I am looking for sensors that can integrate with any of the IoT backends ...
2
votes
1answer
24 views

How to set up the Timeslot API for AES-CCM peripheral use

I am using a nordic BLE SOC: nrf52 dk, along with s130 and sdk 14.2.0 I want to secure an advertised BLE packet with AES CCM encryption. The board contains a co-processor for AES calculation that is ...
1
vote
0answers
35 views

How to detect current flow in a live wire running at 220V AC, using Esp32

I have a project planned which is related to home automation. I want to be able to control the lights using an app on phone while also maintaining full manual switch control in case the relay or ...
1
vote
0answers
23 views

Push notifications to Mi Band 3

How can I push notifications to my Mi Band 3 without notifications showing up on my phone? It could be code, or could be an app for Windows or Android. I'm planning on writing an app using custom ...
1
vote
0answers
8 views

IFTTT Particle Photon Triggering Phillips Hue: Values Failing

I want a Particle Photon to trigger the IFTTT action of a Phillips Hue light changing brightness to either 0%, 25%, 50%, etc. The event seems to be triggering, but the brightness does not change as ...
4
votes
3answers
102 views

Choosing low power microcontrollers to run with a solar panel

I am starting a project which will control a small motor, some LEDs for illumination and read some analog sensors and I need to power it via a solar panel. I am looking for the best option on ...
2
votes
1answer
39 views

What's the size in bytes of a single, TLS-encrypted MQTT message?

To determine the use of bandwidth usage, I need to know the exact size of a MQTT message sent from a device to a server. This message looks something like this: client.publish(topic="foo", payload="...
3
votes
2answers
48 views

Simpler Security Cameras [closed]

i have several older Foscams that work great, but are getting old and like to replace them. I do NOT want to rely on an app, or cloud storage. these cameras have a built in web-server that has the ...
2
votes
0answers
18 views

BLE advertising packet formation using nordic stack

I am working on A BLE beacon application to advertise data. I am using nordic nrf52 Development kit and nordic sdk s132. I am starting from the beacon exapmle provided by nordic. My question is how is ...
3
votes
0answers
43 views

How can I use Raspberry Pi to communicate with my Z-Wave gateway?

I am quite new to Z-Wave. I have a gateway, 2 z-wave sockets and 3 light switches. Everything comes from Keemple brand if that helps. However, using Keemple I cannot automate things the way I would ...
1
vote
1answer
34 views

Remote sensor cloud connection

i'm just starting out in Arduino, IoT etc; I was given the Elgoo Uno R3 Arduino starter kit at the weekend and i've been trying to soak it up. I would like to make a number of sensors for my van, ...
2
votes
0answers
8 views

Create Light Switch with HAP-NodeJS, MQTT and fail safe

I'm trying to get into setting up my own home automation. I've already setup HAP-NodeJS & MQTT on a raspberry and I've flashed a esp01 with NodeMCU. What I want to do is create a light switch ...
0
votes
0answers
8 views

Smart lights for GU24 lamp fitting?

I'm currently using Philips Hue smart bulbs in most of my E26 sockets. However, many of the lighting fixtures in my home use a GU24 lamp fitting but Philips doesn't sell any bulbs that fit a GU24 ...
4
votes
1answer
53 views

How to track cause of unexpected lighting changes?

I'm using a Philips Hue system with lights in my living room and bedroom. I'm using a v2.0 bridge that integrates with Apple Homekit, and I use a mix of triggers in both the Hue app and Homekit ...
1
vote
0answers
10 views

What CPU architectures are supported by Ubuntu Core

Here are the following hardware platform mentioned in ubuntu core docs. https://docs.ubuntu.com/core/en/#platforms Here is the doc for board enablement. https://docs.ubuntu.com/core/en/guides/build-...
0
votes
1answer
15 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 ...
0
votes
1answer
45 views

MQTT Client behind router and Port forwarding for subscription of Client [closed]

I use MQTT (Mosquitto) and several ESP8266 for sensoring issues. I want that the clients also can "subsribe" to trigger actions on the clients. The MQTT Server is placed in a VLAN of my main router. ...
1
vote
1answer
24 views

CoAP protocol using californium java library

I am working with CoAP californium library using java and my problem is that I want to get the requested resource from client in the main function of server here .. public static void main(String[] ...
1
vote
1answer
22 views

Manually initiate time sync in PainlessMesh

I'm using Expressif ESP32 dev boards and the PainlessMesh library. My nodes do an initial time sync, but after a while I've seen odd behavior where the calculated offset is negative... implying that ...
0
votes
0answers
18 views

What is difference between fog computing and local computing

I read this paper: https://arxiv.org/pdf/1901.08997.pdf In the paper,it said Let "D_i" denote the computation tasks data size of the i-th EH device and O_i be the part for fog computing. Thus, the ...
1
vote
1answer
65 views

How to send data to ThingsBoard using MQTT in python?

I want to send data to ThingsBoard and display it in widget On dashboard. By Following this tutorial I have: Created Device on ThingsBoard by logging into Tenant Administrator. Device Description: ...
3
votes
0answers
23 views

Test automation

Hey I'm looking at implementing some test automation running on target devices and reporting back up to Azure. Has anyone implemented any sort of test automation where metrics and pass/fail ...
2
votes
1answer
25 views

Is Google home an IoT Device or a WSN base station?

They say Google home is an IoT device but it has the ability to control other devices like lights, Air conditioners, etc. (in smart homes) which is more like a base station in the Wireless sensor ...
5
votes
3answers
91 views

What are the differences between edge computing and fog computing?

In IoT, alternatives to cloud computing architecture exist which perform parts of computation in lower layers. Edge computing and fog computing are among these alternatives. What are the differences ...
0
votes
0answers
13 views

is it possible to add devices via Android app by a user using google AUTH API in Google Iot core

I am trying to make an app in which the user can login via google and then add devices (multiple but will have same telemetry data fields) so that user can click (/touch) on each field and view the ...
3
votes
2answers
39 views

IoT applications with heavy-load wireless communications

I am very interested in the examples of IoT applications where a heavy-load (for large amounts of data) wireless communications have to be used. To the best of my knowledge, most IoT devices would ...
1
vote
1answer
42 views

Does server running on local host constitute IoT? [closed]

I have created a network, using mobile hotspot (without internet connectivity), between microcontroller and pc.(intranetwork) The designed server right now works on the local host. Will this be ...
2
votes
1answer
18 views

Can I run a Greengrass Core and an IoT Device on the same machine?

We are trying to create a system that reads and performs some computation on data coming in via serial port (from a CAN network) and send the results to the cloud. I have been looking into AWS ...
5
votes
0answers
24 views

Securing first connection of non provisioned IoT device

Assumptions The IoT Device is actually a software installable on supported operating system, e.g. Windows or Linux. Lets named it Software-Device. The Software-Device is available to download by ...
2
votes
1answer
48 views

Error occurred in installing ThingsBoard Raspberry Pi

I am installing ThingsBoard on Raspberry Pi by following this guide. It gave me an error when I tend run installation script in second last step: Run installation script: sudo /usr/share/thingsboard/...
0
votes
0answers
20 views

Digital Gauge Widget not showing live reading of device in thingsboard Dashboard

I am following getting started guide of ThingsBoard. In their getting started tutorial, I was instructed to run demo-tool.js file from here. It will send the random value of humidity and temperature. ...
1
vote
1answer
23 views

Installing drivers on Windows 10 IoT Core

First off, if this is the wrong Stackexchange site, please let me know so I can ask on the correct site. I'm contemplating installing Windows 10 IoT Core on my Raspberry Pi model 3B+ (so ARM platform)...
1
vote
0answers
37 views

use Gsm Sim800L To Publish data using MQtt [closed]

I have a Module Gsm Sim800L and I must Publish Data to a nodeRed Server Of IBM Bluemix. I used the library (Arduino MQTT Library for SIM800 GSM Modem) at this Link : https://elementztechblog....

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