Just starting to learn Embedded Linux + Qt Created an open-source project template Click here to directly obtain the source code More valuable original articles can be found on Engineer Lao Wen’s Gitee Welcome to follow the video account Engineer Lao Wen Learn more about fun and interesting embedded IoT development Related articles on Embedded … Read more
1. Background Many frontline teachers struggle with teaching the information technology IoT module due to limited resources, lacking hardware such as control boards, Arduino, and other devices, which makes it difficult to conduct effective IoT classes. In this article, I will share how to implement MQTT and IoT platform applications without hardware, based on my … Read more
1. The “Impossible Triangle” of Industrial Data Transmission: Real-time? Reliable? Low Cost? Industrial sites have three conflicting demands for data transmission:✅ Low Latency (alerts must be fast)✅ High Reliability (data cannot be lost)✅ Low Resource Usage (limited computing power/bandwidth on edge devices) —— Traditional solutions struggle to balance these: Modbus TCP Medium (polling jitter) Low … Read more
You have successfully built an excellent IoT system: device data transmission is stable and smooth, and the real-time dashboard is functioning well. However, once asynchronous operations are involved, problems arise: critical firmware updates sent to offline smart locks fail; data processing nodes experience load imbalance, with some nodes idle while others are overwhelmed. The real-time … Read more
About 20 years ago, the Internet of Things (IoT) was just starting in China. Wuxi vigorously developed IoT, bringing in several research institutions and companies from the Chinese Academy of Sciences engaged in IoT research, thus making Wuxi the national center for IoT research and development. The words “China IoT Research and Development Center” were … Read more
Set Programmer Zilong as starred to read quality articles in real-time Hello everyone, I am Zilong, focusing on sharing AI tools and breaking down AI side jobs to make earning money easier. 1. Introduction to MQTT MQTT (Message Queuing Telemetry Transport) is an IoT communication protocol developed by IBM. OASIS (Organization for the Advancement of … Read more
QXmpp is a cross-platform C++ library for XMPP (Extensible Messaging and Presence Protocol) clients and servers based on the Qt framework. It encapsulates the underlying complexities of the XMPP protocol, providing developers with a simple and easy-to-use API to build instant messaging and real-time collaboration applications. Below, we will comprehensively explore the features and usage … Read more
Technical experience sharing, welcome to follow and provide guidance. This article introduces MQTT based on the Internet of Things. What is MQTT? MQTT: Message Queuing Telemetry Transport, a lightweight messaging protocol. It is particularly useful for establishing connections in remote locations where small code footprint and/or network bandwidth are precious. MQTT is a distributed soft … Read more
MQTT (Message Queuing Telemetry Transport) is a lightweight communication protocol for the Internet of Things. Version 3 (primarily referring to V3.1.1) and Version 5 are two significant versions. V5 adds a wealth of features on top of V3 to meet the needs of more complex IoT scenarios. Below are the core differences between the two: … Read more
Introduction: MQTT ≠ “Lightweight Toy”, It is the “Invisible Framework” of Industry 4.0 Many people still have the impression of MQTT as: “Small devices → Cloud, send temperature and humidity, QoS=0, if lost, it’s lost…” —— That is the consumer IoT usage.In industrial settings, MQTT has evolved into: a high-reliability, low-latency, event-driven, semantically rich “Industrial-grade … Read more