What are the differences between serial ports, COM ports, TTL, RS-232, and RS-485? We often encounter these in our projects, so let’s summarize them. 1. Serial ports and COM ports refer to the physical interface form (hardware). TTL, RS-232, and RS-485 refer to the level standards (electrical signals). 2. When connecting devices, generally only GND, … Read more
RS-232, RS-422, and RS-485 are all serial data interface standards. RS-232 is the most widely used serial interface for PC communication. RS-232 is defined as a single-ended standard that increases communication distance in low-speed serial communication. RS-232 uses an unbalanced transmission method, known as single-ended communication, while the RJ45 interface is typically used for data … Read more
RS-232 RS-232-C is a serial physical interface standard established by the Electronic Industry Association (EIA) in the United States. RS is the abbreviation for “Recommended Standard”, 232 is the identifier number, and C indicates the number of revisions. Its full name is “Serial Binary Data Exchange Interface Technology Standard between Data Terminal Equipment (DTE) and … Read more
**Introduction** In many industrial and automotive applications, protecting interface transceivers from various electrical overstress events is a major concern. Transient Voltage Suppressor (TVS) diodes are commonly used for this purpose as they clamp voltage spikes by creating a low impedance current path. The electrical characteristics of TVS diodes are determined by several process factors. These … Read more
Click the blue text to followServo and Motion Control Introduction to RS-232, RS-422, and RS-485 Overview of RS232 The RS-232 interface conforms to the interface standard for serial data communication established by the Electronic Industries Alliance (EIA), with the full original designation being EIA-RS-232 (abbreviated as 232 or RS232). It is widely used for connecting … Read more
Attributes play a crucial role in BLE, serving as a bridge between different components. Today, let’s learn about the concept of attributes. Attributes: The architecture of BLE is divided into servers and clients. The way BLE works is by storing data on the server, which the client can access. Data is stored in a format … Read more
First, let’s address the leftover issues from Jenkins. Below is the original pipeline code to add a non-image to the cluster as a deployment. pipeline { agent { kubernetes { inheritFrom 'default' namespace 'xiejiajia' serviceAccount 'jenkins-sa' // Use the newly created ServiceAccount } } environment { ACR_SERVER = 'registry.cn-hangzhou.aliyuncs.com' ACR_NAMESPACE = 'nginx-vmware' ACR_REPOSITORY = 'jenkins-test' … Read more
1. A new host was created, and a snapshot was taken for easy rollback. Passwordless login was set up in the same way, and then added to the hosts list. A copy test was conducted to prepare for the following playbooks. 2. The Ansible control machine installs nginx and downloads the Linux 7 ISO as … Read more
OCI – Ansible Operation Example Background In a cloud computing environment, automation is key to improving efficiency. Ansible is a widely used automation tool that helps us easily manage and operate resources on Oracle Cloud Infrastructure (OCI). This article will demonstrate how to use Ansible to operate OCI, including installing Ansible and the Ansible Collection, … Read more
Introduction to Ansible RECRUIT 1. What is Ansible? Ansible is a newly emerging automation operation and maintenance tool developed based on Python, which integrates the advantages of many operation and maintenance tools (puppet, chef, func, fabric) to achieve functions such as batch system configuration, batch program deployment, and batch command execution. Ansible is developed based … Read more