All Questions

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 ...

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.

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 ...

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-...

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 ...

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 ...

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!

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

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?

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....

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 ...

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 ...

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 ...

(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 ...

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 ...

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(...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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="...

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 ...

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 ...

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 ...

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, ...

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 ...

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 ...

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 ...

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-...

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 ...

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. ...

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[] ...

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 ...

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 ...

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: ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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/...

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. ...

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)...

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....