Distributed MQTT Broker Server The distributed MQTT Broker server is a message broker based on the publish/subscribe model. It supports load balancing and data synchronization across multiple nodes to provide high availability and scalability for MQTT messaging services. Here is a detailed explanation of the distributed MQTT Broker server: 1. Definition and Functionality Definition: The … Read more
Let’s dive into MQTT, how to ensure its security, and examples of the protocol to see how it has rapidly gained popularity in the IoT field. In today’s world, there are billions of smart devices. Imagine if these devices were all interconnected and could communicate with each other like their users, forming a global network. … Read more
Background From this chapter onwards, unless otherwise specified, the version of MQTT referred to in this article is 3.1.1. The MQTT protocol is one of the commonly used protocols in the Internet of Things, known as a “lightweight IoT messaging protocol”. MQTT and HTTP both belong to the seventh layer (application layer). For friends who … Read more
1. Introduction MQTT, which stands for Message Queuing Telemetry Transport, is an ISO standard (ISO/IEC PRF 20922) based on the publish/subscribe paradigm. It was released by IBM. Due to its lightweight, simple, open, and easy-to-implement characteristics, it is very suitable for IoT scenarios that require low power consumption and limited network bandwidth, such as remote … Read more
Introduction to MQTT The MQTT protocol is currently the most popular Internet of Things protocol in the world, bar none. It provides devices with a stable, reliable, and easy-to-use communication foundation. As of now, there are over a hundred million devices connected via the MQTT protocol, widely used in fields such as IoT and M2M. … Read more
In the previous article, we briefly introduced the CANopen framework and the seven types of CANopen services. In this article, we will elaborate on the Object Dictionary, SDO, and PDO of CANopen. This series of articles mainly introduces the CANopen protocol, covering topics such as the Object Dictionary, services, SDO, PDO, and master/slave nodes. For … Read more
Editor’s Note: Currently, the security issues of IoT devices are mainly limited by hardware and software. Often, if the configuration does not keep up, even if developers want to address security issues, they may feel powerless. On the software level, the built-in protection mechanisms of the system are particularly critical, especially permission-based protections. We know … Read more
This article is a featured post from the KSY Forum by author ID: fengzhidian 1. Introduction The author has recently researched several smart home devices, which have fewer open ports and are generally unable to obtain debugging permissions from the network side. Gaining local debugging permissions on the device has become an important step in … Read more
Although the ESP8266 programs and related products have matured significantly, some beginners still don’t know how to learn. For example, how to use an ESP8266 along with an STM32 microcontroller to create a small product? What is the learning path like? How should we get started? In this regard, I suggest: 1. First, study the … Read more
This article mainly introduces key technology applications in smart factories, including IoT application technology, complex system simulation technology, and production management technology. Author: Li Fangyuan Source: Control Network, Automation Expo Author Introduction: Li Fangyuan (1973-), male, from Zhoushan, Zhejiang, associate professor, senior engineer, master’s degree, graduated from the Control Engineering major of Zhejiang University of … Read more