1. Qiu Qianzhang’s Lightness Skill: UART In “The Legend of the Condor Heroes”, Qiu Qianzhang says, “UART is like my lightness skill, gliding over the water to cross the river.” To cross the river (communication), one must set up hidden stakes in advance, and while moving, the steps must be fixed according to the distance … Read more
Bluetooth has evolved through five versions from 1.0 to 5.0, each with distinct features. As the version number increases, the functionality of Bluetooth has continuously improved. This article introduces the Bluetooth standards from 1.0 to 5.0, the changes in transmission speed, the increase in effective transmission distance, changes in communication modes, and functional improvements. Version … Read more
Focusing on Automation Training for 14 YearsTechnical Training NetworkHost Computer PART.01 The host computer refers to a computer that can directly issue control commands, generally a PC/host computer/master computer/upper computer,which displays various signal changes (hydraulic, water level, temperature, etc.) on the screen. Slave Computer PART.02 The slave computer is a computer that directly controls devices … Read more
Search on WeChatTechnical Training Since the first PLC was successfully applied in the automotive production line of GM, PLCs have been widely used due to their convenience, reliability, and low cost. However, PLCs are essentially black boxes; it is not possible to observe the control process in real-time and intuitively, which presents a significant gap … Read more
Search on WeChatTechnical Training Introduction Recently, the price of Siemens PLC has increased significantly, causing quite a stir in the industrial control sector. Not only has the price risen, but there are also shortages, forcing many to change their plans. It is reported that a chip replacement has been completed recently, and supply is expected … Read more
Search WeChatTechnical Training Differences Between RS232 and RS485 Interfaces 1. Physical Structure of the Interface 1. RS232 Interface: One of the computer communication interfaces, RS-232 typically appears in the form of 9 pins (DB-9) or 25 pins (DB-25). Usually, personal computers have two sets of RS-232 interfaces, referred to as COM1 and COM2. 2. RS485: … Read more
IoT, leveraging cutting-edge IoT technology, creates smart home and hotel solutions, providing a new experience of convenience, efficiency, and comfort with its smart switches that can be activated with a single button. IoT Smart Home In the operation of smart home systems, communication protocols play a fundamental and critical role. Zigbee and Z-Wave are two … Read more
For a long time, I couldn’t distinguish between the CAN and RS-485 buses because I felt there was no significant difference in the circuits; both are differential and connect to conversion chips. RS-485 basically requires only a serial port, while CAN requires a proprietary interface. I have used CAN bus once, but I have used … Read more
1. First, let’s pronounce the name correctly, what exactly is RS? RS = Recommended Standard, which translates to “recommended standard” and is not a patent of any company. The number following it is the version number: 232: Released in 1962, it’s the grandparent, mainly for computer COM ports; 422: Released in 1975, it’s the uncle, … Read more
A practical guide for engineers: from touch screens to industrial control, from C++ to Qt, Electron, and touch protocols, this article clarifies the core technology selection behind HMI. 1. What is HMI? It’s More Than Just “Touching the Screen”. HMI, short for Human-Machine Interface, can be simply understood as: A device “frontend” that is understandable … Read more