3,857 questions
Tooling
0 votes
0 replies
33 views
Using sensor PMS5003
I am building an IoT-based air quality monitoring system using ESP32 and originally planned to use the PMS5003 particulate matter sensor to measure PM2.5 and PM10 levels. However, I’m currently unable ...
Advice
3 votes
1 replies
108 views
AIoT device: Radius Authentication using PHP with Message-Authenticator attribute
We have some AIoT devices and want to authenticate with RADIUS using PHP. The new RADIUS Server ask for the Message-Authenticator attribute and the build-in RADIUS functions of PHP can not do it. <?...
0 votes
0 answers
47 views
STM32 + LoRa Slave hangs
I am developing a Master-Slave smart farming system. Master: ESP32 (running FreeRTOS) Slaves: STM32 (Sensor nodes and Actuator nodes) Communication: LoRa (p2p) The Workflow: The Master requests ...
Advice
0 votes
1 replies
26 views
Can I perform Matter on-network commissioning using Alexa?
I want to incorporate Matter functionality into my existing devices. Is BLE commissioning the only type Alexa can perform? If the device is already connected to Wi-Fi, is it not possible to perform on-...
0 votes
0 answers
48 views
Valve Control Sytem from Tuya
I'm working with a Tuya-based smart valve and I'm trying to identify the correct DPS values for controlling it (open, close, partial positions, etc.). When I read the device status locally, I only get ...
0 votes
0 answers
92 views
Can't Get my Python Script to log values into csv from Arduino IoT Cloud
The goal is to capture smartphone accelerometer data (X, Y, Z axes) published to the Arduino IoT Cloud by the Arduino IoT Remote mobile app, and then process it in Python and log them into three ...
2 votes
0 answers
63 views
How to resynchronize MQTT client with server
As far as I can see, in MQTT, there are no clear packet boundaries. What happens if the client and server become desynchronized? For instance, a defective server sends a wrong packet length value or, ...
0 votes
0 answers
35 views
MQTT Downlink from ThingsBoard Repeats on Every Device Re-Subscription (Despite QoS=0 and retain=false)
We’re implementing MQTT downlinks from ThingsBoard CE to IoT devices but are encountering unexpected behavior: The Problem When sending a downlink message, it appears to get "stuck" in the ...
0 votes
0 answers
53 views
forceWifiUsage command from wifi_iot packege starts taking a very long time to complete
I am using the wifi_iot package for Flutter to connect to a device's Wi-Fi network in order to display a stream and send commands via SSH. However, on certain Android phones, all commands sent over Wi-...
1 vote
0 answers
51 views
how to set a temperature for Thermostat or AC devices by using Siri voice command directly?
I'm not using HomeKit, directly I want to set temperature of a AC or Thermostat devices by using Siri voice command like 'Hay Siri, Set Thermostat temperature 25 degree'. Here I'm successfully ...
1 vote
0 answers
26 views
Does GridDB Cloud support triggers or callbacks for real-time data processing?
I'm building a data ingestion pipeline with GridDB Cloud where IoT devices send temperature data every few seconds. Once data is inserted into the container, I want to immediately trigger a function ...
0 votes
0 answers
40 views
How to properly structure a time-series schema for sensor data in GridDB Cloud for efficient querying?
I'm designing a time-series application using GridDB Cloud to store sensor data from IoT devices. Each device sends temperature and humidity readings every 10 seconds. device_id (string) temperature (...
0 votes
0 answers
95 views
How to refresh dashboard running on Thingsboard Edge
I am playing around with Thingsboard Edge and dashboards. I can update dashboards on my main thingsboard instance, and they are synced to the edge instance just fine. But when I have the dashboard ...
2 votes
0 answers
82 views
Unable to unpair Matter accessory
I’m using the MatterSupport framework to integrate Matter devices in my iOS app, following this documentation Here’s the code I’m using to trigger the Apple UI for commissioning Matter devices: import ...
0 votes
0 answers
106 views
Features of working with IoT using BLE with the standard tools in Windows 10
I am an IoT devices developer. I use a chip from Texas Instruments called CC2652R7. They have their own proprietary BLE stack that I use for communication. I have two identical devices with different ...