BACnet to MQTT—ADFWEB Gateway Converter–Guangzhou Xinyu IoT Author:www.adfweb.com.cn Zou Wuyi Mobile185-020-77899 Email: [email protected] 1 Features: HD67938-B2 is aBACnet slave device/ MQTT converter, with the following features: – Can be installed on a 35mm DIN rail; – Wide power input range: 18…35V DC and 8…24V AC; – Wide operating temperature range:-40°C to 85°C (-40°F to +185°F). … Read more
1. What is QTreeWidget? <span><span>QTreeWidget</span></span> is a very important and commonly used widget in the Qt framework, used to display and edit item data in a tree structure (Tree Structure). It is a high-level, user-friendly wrapper around <span><span>QTreeView</span></span>, similar to <span><span>QListWidget</span></span> and <span><span>QTableWidget</span></span>, providing a convenient item-based interface without the need to manually create a … Read more
Driven by the wave of digitalization, the Internet of Things (IoT) is uniquely transforming the landscape of industrial automation. Among these changes, the MQTT protocol plays a crucial role in this revolution due to its lightweight and efficient nature. Data acquisition and protocol parsing from PLCs (Programmable Logic Controllers) are key technologies in the field … Read more
In IoT development, the MQTT protocol has become the “golden partner” for devices to connect to the cloud due to its lightweight nature, low bandwidth consumption, and efficient communication. However, in practical applications, developers often encounter issues such as connection management, protocol compatibility, and low power optimization. Newcomers may also struggle with practical operations regarding … Read more
The title of this project is: Rock-Paper-Scissors Gesture Recognition. This project implements basic gesture recognition for rock-paper-scissors, compares the recognized results with the gestures stored in the machine, controls the servo’s behavior based on the results, and synchronizes the recognized results to the host computer. Table of Contents Project Overview Hardware List Servo Control Pins … Read more
In today’s interconnected world, Internet of Things (IoT) technology is transforming our lives and work at an unprecedented pace. From smart homes to industrial automation, from intelligent transportation to environmental monitoring, various devices are interconnected through networks, enabling data exchange and sharing. Within this vast IoT ecosystem, communication protocols play a crucial role, among which … Read more
The rapid development of the Internet of Things (IoT) and Industrial Internet of Things (IIoT) has raised higher demands for messaging middleware: lightweight, high-performance, low-latency, and easy deployment. NanoMQ is an MQTT message broker that meets these requirements, being a high-performance, lightweight MQTT edge messaging platform based on NNG, particularly suitable for resource-constrained embedded devices … Read more
In embedded IoT development, the MQTT protocol has become the standard choice for communication between devices. Why do you need a local MQTT server? • Development Testing Isolation: Avoid impacting the production environment and provide a secure testing space. • Network Independence: Does not rely on external network connections, ensuring a stable development environment. • … Read more
Table of Contents Introduction 1. Environment Configuration 1. Arduino IDE 2. Data Acquisition 1. Follow the WeChat public account – Star Aid Studio and send the keyword (ESP32-CAM) 2. Data description editing 3. Reference for setting up MQTT service 3. Implementation Effects 1. Output Base64 data via serial port 2. Verify if the output Base64 … Read more
