3D Charts Articles

The First AI Robot Teacher in Fuquan City Joins the First Primary School, Opening a New Chapter in the Integration of Arts and Technology in Education

2026-05-19 by boardor

☆　Hosted by the Fuquan City Federation of Literary and Art Circles,　[Fuquan Literary and Art Community Micro-Publication] showcases literary dynamics, focuses on literary development, and presents the work of Fuquan’s literary community from multiple perspectives. NO.460 Fuquan Literary and Art Community Work Dynamics On September 9, at the First Primary School, an extraordinary open class attracted … Read more

Modbus TCP to HART – ADFWEB Gateway Converter

2026-05-14 by boardor

Modbus TCP to HART – ADFWEB Gateway Converter– Guangzhou Xinyu IoT Author:www.adfweb.com.cn Zou Wuyi Mobile185-020-77899 Email: [email protected] 1、Features: HD67909-A1 is a Modbus TCP slave /HART master converter. It has the following features: Triple isolation between Ethernet and power, Ethernet and HART, and HART and power; Bidirectional information transmission between the Ethernet bus and HART bus; … Read more

Data Visualization with Python: A Case Study Using Pyecharts

2026-05-07 by boardor

Introduction ECharts is an open-source pure JavaScript charting library developed by Baidu, currently comparable to Highcharts. It supports 12 types of charts including line charts (area charts), bar charts (column charts), scatter plots (bubble charts), candlestick charts, pie charts (doughnut charts), radar charts (filled radar charts), chord diagrams, force-directed layout charts, maps, dashboards, funnel charts, … Read more

Differences Between RS485 and MODBUS

2026-04-29 by boardor

Follow the WeChat public account “Automation Control System Communication” to learn about the principles of automation control systems and master knowledge about automation control systems. Click on the blue “Automation Control System Communication” above to follow us. We often see RS485 and MODBUS mentioned together. What are their differences and connections? RS485 is a physical … Read more

Essential Knowledge Points for C Language Beginners: 10. Usage of char Variables

2026-01-18 by boardor

“From today on, study hard and make progress every day” Repetition is the best method for memory; spend one minute each day to remember the basics of C language. “Series of 100 Essential Knowledge Points for C Language Beginners“ 10. Usage of char Variables 1. Basic Characteristics of char Type char is the smallest integer … Read more

Understanding the Confusion Between DE and RTS in UART Interfaces

2025-11-16 by boardor

Content Hello everyone, I am Bug Jun~In industrial communication and embedded development, RS485 has become one of the mainstream buses due to its high anti-interference capability and multi-node support. However, many engineers often confuse two key signals when debugging RS485: DE and RTS. They both appear to be “control send” signals, and in some circuits, … Read more

Analysis of the Automatic Download Principle of ESP32

2025-10-01 by boardor

Recently, I came across an open-source project called meshtastic. It primarily builds a decentralized network using LoRa spread spectrum communication. In China, it is likely more suitable for mountainous areas and rescue communication scenarios, as we can make phone calls as long as we are not deep in the mountains. This project mainly uses the … Read more

Sensor Network Security: A Vulnerability Worse Than Log4j

2025-06-20 by boardor

Recently, Ankit Suthar, an ICS/OT network security expert, published an article titled “Are Your Smart Instruments Secure?” stating that over 3,000 smart instruments in a petrochemical facility were found to have no passwords set, even by default. Joe Weiss, a renowned automation expert and control system cybersecurity specialist, and managing partner of Applied Control Solutions, … Read more

Introduction to MODBUS and HART Communication

2025-06-16 by boardor

RS485 and MODBUS communication are commonly used concepts in industrial control systems, but they are different. Below is a brief introduction. RS485 is a physical interface, simply put, it is hardware. MODBUS is an internationally standardized communication protocol used for device data exchange between different manufacturers (generally for industrial purposes); in industrial environments, data is … Read more

Sensor Signal Transmission Methods and Introduction

2025-06-07 by boardor

01 Output Forms of Sensors 1. Digital Output Type Digital output primarily includes three forms: RS232, RS485, and wireless transmission. The specific digital output type is chosen based on the actual communication distance and the complexity of the terrain. RS232 output is generally suitable for short-distance transmission within 15 meters and has weak electromagnetic interference … Read more