All Questions

I'm trying to test a two combined examples: OTA and MQTT . My goal it to check a LastWill when disconnecting an ESP8266 devic. Surprisingly, a LWT is not sent to designated topic. code has not ...

In case you have multiple sensors (temperature, pressure, etc) up to 20 in a system with different electrical interfaces. What is the best way to read values simultaneously (at exact the same time ...

I was able to connect the SP10 Teckin outlet to my Wi-Fi network using smart life app. I am able to successfully control the outlet from the app. I opened the “list of connected devices” page on my ...

I'm using MQTT broker for my IOT devicess, mostly ESP8266 ( some are NodeMCU, some Wemos mini, and some are Sonoff) , running an Arduino code, some time ( about a year ). MQTT broker is running on a ...

I am trying to building cheap plant monitoring system. I am thinking of adding fingerprint scanner, because I want to ensure the plant's caretaker takes care of his plants by himself. (Please tell ...

On average how much power consumption does sending 500 bytes an hr for 24 hours consume? Assuming the device has a 2000mAh battery typically 89.9mA @ 3.7V (continuous transmission)? I am interested in ...

I am going to buy two TRÅDFRI Drivers, one 10w and a another 30w. Is it possible to pair the drivers and use one remote control to dim them at the same without the gateway? Or does it work to pair the ...

I am reading on google about the cooperation between 5G cell networks and IoT devices, but it is not clear to me how these 2 standards can cooperate??

I have a PC that uses Windows 10 Enterprise 64-bit and have had some help from an external company to convert it to a Windows Embedded machine. One thing I need to do on the PC is use UWF to check the ...

With Alexa I can change default shopping list and todo app by settings. I'm using AnyList with Alexa, so can I also use AnyList with Google home?

I'm using Windows 10 Enterprise IoT 64-bit and am trying to run the following command in the command prompt: uwfmgr.exe get-config The result is always "The command failed (Access is denied.)." ...

I had my Sonoff switches working fine on my rental FTTH modem then I bought Google Nest Wifi. Only my kitchen lights connect to the "blended" wifi, the rest of them won't show up on Google home (same ...

How can people use the app find my phone if you only have one phone and live in a country tiwn where smartphones arent common? Im not sure what stack exchange to post this on so if you know any ...

Is barcode scanning with an ESP32 possible? Is there an existing project, of a library that I could use? Any idea how to go about it? If not feasible, would it make sense to stream video from the ...

This question looks similar to What IoT services are available for storing/sending/publishing generic data in the cloud? though I haven't found a suitable answer yet. I'm building a light/temp/...

I was testing a system based on some devices connected to a WiFi network. There are 3 devices that make part of the system: A raspberry Pi, an ESP32 and a laptop PC. The raspi acts as a Apache server ...

I am looking for a low-cost smart band (should be available in India) which can be controlled from Linux machine and or Android app to generate custom vibrations. UPDATE I see that there are many ...

I would like to build a network consisting of 5 smartphones (preferably Android, if it makes any difference) that log synchronized accelerometer data into a computer (like a data-logger). How can I ...

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 ...

I've bought myself a simple CSR8675 board with USB-SPI programmer, without any software included. I've succesfully managed to read and edit some settings using PSTool, but what i really need is to set ...

I've been working on a school project that consists into making a smart light socket. I want to make an app which will allow the user to control many of them, like switching on and off, controlling ...

I am having the following discussion with my colleagues and wanted to get some other people's opinions on this. We (a major global company) are currently working with several kinds of presence/people ...

I'm using a Wemos mini, to switch on the light. I'm trying to figure out how to combine IFTTT and Sunset and Sunrise from Weather underground to trigger the lights ON. All examples I find, is how ...

I just read Bluetooth Direction Finding, added to the Bluetooth spec as part of Bluetooth 5.1 to allow devices to measure angle of arrival and angle of departure (AoA and AoD) to position devices ...

Does anyone have a simple "hello world" example of writing text to the display of a ESP-WROVER-KIT-VB ? My search skills are failing me today.

My company use sensors on doors to track activity and access control on the doors for many sites throughout the UK. We need to log this activity by sending UDP packets from the sensor's receiver to ...

As I am new to the IoT world, I would like to ask for a clarification. I was reading somewhere about the general idea of having devices communicating with each other or storing information in a ...

I am a PhD researcher working on power systems of the future. My work focuses on energy management of distributed energy resources and providing services to the grid. Data acquisition and calculations ...

I am attempting the following setup: Sensor--> I2C--> Pycom LoPy4(Node)-->LoRa-RAW-->Pycom LoPy4(Nano Gateway)-->RPi-->AWS I have established the LoRa RAW connection between the two LoPy4s, now I ...

Is it possible to create an IFTTT widget which can turn on a LIFX light and fade it off over a specific time? I had thought configuring a button to turn the light on then set a fade duration using ...

Does any one know - can I use Arduino shields with ESP32?

My raspi knows when EDT (Eastern US Daylight Time) is active, HypriotOS/armv7: pirate@black-pearl in ~ $ date Thu Oct 17 10:27:27 EDT 2019 the docker container for homeassistant knows when EDT is ...

I have ECHO show 5 device at my home. I have a mp3 file on my smartphone which I want to play on my voice command by amazon ECHO. I am ok to upload this file if echo can support it. How can I do this ...

So I happen to know some python to turn lights on and off in rpi3. Also to automate my home I know how to use relay boards. But the problem is that I have one rpi3 and the light which I want to ...

Wireless sensors communication have limitation in message size due to low power consumption. Assume that we have a heart rate sensor sending data via BLE, or a GPS data sending via LoRa to a receiver:...

I have many audio books purchased in United Kingdoms Audible account. I can still hear them on my smartphone. I have recently moved to India and purchased amazon echo device. I do not have any books ...

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 ...

I am writing firmware for different boards supporting FreeRTOS, Zephyr, ... My problem is when I am developing the firmware, I should run the firmware on the "real" device from the beginning and ...

Got a new router from the ISP and my ESP8266 NodeMCUs are causing problems, they need very long to connect to WiFi (3-4 mins), which wouldn't be that big of a problem, but they also don't connect to ...

I'm working on a project where I have to send voice through mic to a Speech recognition API using esp8266 where the voice is get processed. Is there any possible way I could do this with esp8266? I ...

I would like to send a location based push notification to all devices that enter a range of some kind of IOT device. for example I would have a device which sends push notifications to any phone ...

Can I interface with my server's RESTful HTTPS API directly over 802.15? Or do I need a gateway? Any good overview/tutorial for 802.15 (not too in depth, just ot get an overview)?

As a follow-up from Can I retrieve a Python program from an ESP32?, I would like to make things a little more difficult for those who would steal my code (I do realize that I cannot prevent it). Can ...

I have created an alexa controlled smart switch using esp8266 and fauxmo library and it works fine .However I need to set the wifi credentials as well as device name within the code which is not ...

As per the title. If I have an ESP32 with some Python loaded, and have lost the source, can I retrieve it from the ESP32?

I have multiple sensors that are sending up to 10 data a day (temperature, battery, others data related to any event that could occur). In the future I may have hundreds, thousands of sensors that ...

I have an existing IoT project based on MQTT and am looking at extending the application to include battery powered end nodes using Zigbee mesh. It logically seems the most appropriate way to do this ...

I have my final year dissertation coming up and I'm thinking of doing a project where I evaluate attacks on an IoT network using Contiki/Cooja simulator. The project as it stands is too simple and has ...

I am following this guide which seems to be excllent, except for one litte problem: When I debug, a breakpoint which I set on the first line is nor reached and the script seems to hang. The debugger ...

I have got Monzo (a bank) and Strava (a fitness tracking app) setup in IFTTT. There is a pre-existing recipe that saves 1 pence per 10 kilometers when a new activity is created. I want to create a ...