Internet of Things Stack Exchange
Internet of Things Stack Exchange

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1500 questions
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MQTT Client Broker communication - can a malicious client masquerade as a legitimate one after being connected with credentials

I would like to ask a question that I have about MQTT client broker communication. Let's say, a client C1 is connected to the broker with user name and password (with no encryption). What happens when a new client C2 (a malicious one) tries to…
Rijo Varghese
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Ifttt not filling fields

I have a Bosch Easycontrol thermostat and it's supposed to be compatible with ifttt. What happens though is that I click on the integration and no matter which action I choose, the field "which room" is stuck in "Loading..." and I cannot complete…
ChatterOne
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ESP32 transmit data over BLE VS Wifi

I am working on a project where I have got an ESP32 device (Wifi & Bluetooth), which reads data from some sensors, such as temperature and soil moisture (outdoor environment). The data is then sent to a Raspberry PI which is 15 meters far, the PI…
Edge7
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Monitoring tools for IoT systems

I'm looking for a software tool for the monitoring of the IoT system in my building. Data inputs are accessible via MQTT or API requests (alternatively, directly accessing a InfluxDB time-series database is an option). It is a fully electric…
cheesus
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What is the technical difference between MQTT and MQTT over web socket that allows the later to be preferred choice by web browser apps?

I am new to this IoT protocol area. My understanding is that MQTT is a lightweight messaging protocol for IOT devices. MQTT over web socket involves use of HTTP to UPGRADE the connection to use web socket. Otherwise they follow same protocol for…
variable
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How to send data from BLE MCU to the Windows?

I have one nRF based 52840 device, which I am using to send the data by using BLE technology, my laptop has windows 10 and Bluetooth 4.0, which can detect the BLE but it cannot even connect to it. I am very new to this, and I am exploring the…
ZBT248
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802.11ah Eval Kit Not Operating In 900MHz Spectrum?

How can I override the wlan driver's region limitations to permit the (legal) 900MHz unlicensed operation of my 802.11ah evaluation kit? The [Silex evaluation kit for 802.11ah][1] doesn't seem to work at sub-GHz. A spectrum analyzer shows no power…
James Bowery
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Is there a visual tool to connect components together, with suggestions on missing part

I'm not great in electronics but would love to play with micro controller and connecting sensors to it. In my mind, it would mean loading specific micro controller details on that tool (like, say, the ESP8266), and a sensor, for instance, a…
Cyril N.
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UL-certified WiFi Wall Switch

I'm looking for a UL-certified WiFi wall switch for programming network effects in Python. UL-certified Wall-mounted Mains-powered 2+ physical switches Python-programmable. I want to program some stateful network effects using either lifxlan or…
user19087
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IoT Dashboard for customers (data comes from Arduino)

I push my sensor readings from product A, B, C, D to an online cloud provider. Then my customer (call him E) needs to access all these sensor readings and make a dashboard for his customer X, Y Z. Customer X needs to login and then see only product…
ProgrammerX
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Sonoff basic R3 DIY

I have read through a few blogs and watched videos of setting up the R3. What I have accomplished to date is the following: Paired the R3 with ewelink cell app. I can turn it on and off from the app. I have a jumper on the pins to put the R3 into…
user3465651
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Controlling a KNX gateway with Apple HomeKit

Are there any KNX gateways that work with Apple HomeKit? I'm currently using the BAB Technologie EIBPORT V3 and have to speak to it via CUBEVISION 2 which works very poorly. I would love to find a way to simply control my KNX devices (primarily…
Zippy
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1 answer

ESP OTA from Github

I want to be able to program my ESP32 (same for ESP8266) remotely, I have used ArduinoOTA without problems, and I can upload the file into the ESP selecting the local file that I want to flash. However I want something different. I want that the ESP…
Cincinnatus
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Wirelessly Transmit Signal to Smartphone App

I'm looking for a way to wirelessly transmit data to smartphone app. I have a small temperature sensor which will be embedded into a metal structure and will constantly monitor temperature when the device is turned on. I want to transmit that data…
Trevor Dammon
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wireless moisture data transmission

I am mainly from software background with very very basic level of electronics/microcontroller knowledge. I recently did a small IoT project for moisture/temp detection following this tutorial At a very high level this uses Raspberry Pi4 and a…
Fahad Najib
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