Today, we are going to talk about the secret language that allows devices to “speak”—the IoT communication protocols. Don’t be intimidated by this technical term; they are essentially the “WeChat” and “WhatsApp” of the device world, with some being energy-efficient, some being fast, and others being social butterflies (supporting multi-device chatting). 1. IoT Protocols: The … Read more
Abstract: Qt Group has announced a significant expansion of the Qt platform and ecosystem. At the Qt World Summit in May 2025, Qt Group unveiled an innovative bridging technology aimed at facilitating seamless integration of Qt with various programming languages. The Origin of the New Bridging Technology Qt’s origins trace back to the C++ ecosystem. … Read more
Installing the QT Development Environment on Linux 0. Downloading the Installation Package You can download all versions of QT from the following website: https://download.qt.io/ This demonstration installs version 5.9.0, which is a long-term support version, so navigate to archive/qt/5.9/5.9.0 Here, we are on Linux, so select the Linux version of the installation package, click the … Read more
1. Overview of Qt Embedded Development Qt/Embedded Linux (now known as Qt for Device Creation) is a version of Qt optimized for embedded systems, featuring the following characteristics: No need for the X Window System, using its own window system QWS (Qt Window System) Customizable compilation, removing unnecessary modules Supports multiple processor architectures (ARM, MIPS, … Read more
Project Name: Allwinner D1s Smart Home Control Virtual Light Rendering Interaction (86 Box) Project Author: It’s Xiaoye~ Introduction Every time before going to bed, I have to prepare for a “100-meter” sprint(to the bed).Never mind, I can’t be too bold˙Ⱉ˙ฅEven after lying in bed, I still think, ah, did I turn off the bathroom light? … Read more
1. Connecting ESP32 to the Network Before performing MQTT communication, the ESP32 needs to connect to a WiFi network. Below is the code to connect to WiFi: import network import time def connect_wifi(ssid, password): # Create WiFi client interface wlan = network.WLAN(network.STA_IF) wlan.active(True) # Check if already connected if not wlan.isconnected(): print('Connecting to network…') wlan.connect(ssid, … Read more
1.1What is MQTT MQTT (Message Queuing Telemetry Transport) is a lightweight messaging protocol based on the publish/subscribe model. It is built on top of the TCP/IP protocol and was released by IBM in 1999, with the latest version being v3.1.1. The greatest advantage of MQTT is its ability to provide real-time and reliable messaging services … Read more
Detailed Explanation of MQTT Message Structure and Python Reading Methods Introduction In the field of the Internet of Things (IoT), the MQTT (Message Queuing Telemetry Transport) protocol is favored for its lightweight and efficient nature. This article will provide a detailed analysis of the composition of MQTT messages and introduce how to read MQTT message … Read more
[Image] This concludes the technical sharing regarding MQTT. Future updates on the latest developments related to MQTT will be provided periodically. If there are any aspects of MQTT that have not been thoroughly covered or if you have better suggestions, please feel free to leave a comment. We will normally supplement the content based on … Read more
Scan to FollowLearn Embedded Together, learn and grow together Overview 1.1 What is MQTT MQTT (Message Queuing Telemetry Transport) is a lightweight publish/subscribe messaging protocol, developed by Andy Stanford-Clark of IBM and Arlen Nipper of Arcom in 1999, specifically designed for low bandwidth, high latency, or unstable network environments. 1.2 Features Lightweight: The protocol header … Read more