MQTT (Message Queuing Telemetry Transport) is a client-server publish/subscribe messaging transport protocol that is lightweight, open, simple, simple in design, and easy to implement. Although HTTP is the epic standard for web pages, for large-scale communication between machines (Machine-to-Machine, M2M), the previous request/response (Request/Response) model

As the national government’s investment in the construction of smart cities gradually increases, smart street lights are basically built as an intensive urban infrastructure in all constructions, playing the role of the most important transportation hub. They can drive All effects are growing, and in

First introduction to MQTT The Internet of Things, as the name suggests, is the Internet where things are connected. It can link objects through the Internet, and these objects can collaborate with each other. MQTT is a TCP/IP-based protocol for data communication between these objects.

In the latest update to the Consumer Guide, International Data Corporation (IDC) predicts that global smart city spending will reach $95.8 billion in 2019, a 17.7% increase from 2018. Initiatives related to data-driven public safety, smart transportation, resilient energy and infrastructure will attract the lion’s

A basic understanding diagram of MQTT: Basic flow chart: MQTT is a link protocol that specifies how to organize data bytes and transmit them over a TCP/IP network. But in reality, developers don’t need to link to the specific details of this linking protocol. All

Agriculture is one of the oldest industries in human history. By learning to grow crops and domesticate livestock, ancient human societies avoided the necessity of moving in search of food. Therefore, our ancestors had the opportunity to choose a fixed place of residence and establish

What is NB-IoT NB-IoT is a wireless cellular network communication protocol. It is the abbreviation of NArrow Band Internet of Things, which means narrowband Internet of Things. It is a low-power wide-coverage Internet of Things technology (LPWA). Narrowband only refers to the bandwidth used is

The key to Internet of Things (IoT) technology is communication, and various protocols play an important role in connecting the vast number of “things” to the Internet. This article introduces two complementary IoT protocols: Message Queuing Telemetry Transport (MQTT), a scalable Internet protocol that supports

One of the hallmarks of the construction industry is its enormous capacity to reinvent itself. The integration of technology trends such as the Internet of Things will facilitate many tasks in the industry, such as optimizing resources and improving the completion time and quality of

With the development of agricultural mechanization, most of my country’s agricultural production has been mechanized. At the same time, a series of problems have arisen. The agricultural machinery cannot be found in its specific location, or the driving route is adjusted due to unexpected circumstances

At present, there are many types of interfaces in communication equipment, and you will always encounter various conversion boards during debugging. Today, this article will help you understand the differences between these interfaces. First of all, the serial port, UART port, and COM port refer

NB-IoT is a low-power wide-area IoT technology that operates in authorized frequency bands and is widely supported by mainstream operators and communication equipment manufacturers around the world. Compared with other IoT technologies, NB-IoT has wider coverage, lower terminal power consumption, larger number of connections, and