Introduction PID control (Proportional-Integral-Derivative control) has a wide range of applications in industrial control and robotic control. This article takes robotic arm joint control as an example to explore the implementation and optimization of PID control in ROS. Unlike vision-related applications, this article focuses on the servo control of robotic arms, discussing how to adjust … Read more
Why does He Tongxue love 3D printers so much? Those who have seen his latest video know the answer: passion. 3D printers can create all sorts of strange yet interesting works. If you get your hands dirty, wouldn’t it be even better to make your own 3D printer~~ Today, I will share a DIY 3D … Read more
Bladder monitoring, including urinary incontinence management and bladder urine volume monitoring, is an important aspect of urological nursing. Urinary incontinence is a common condition affecting the quality of life of over 420 million people globally, and bladder urine volume is a crucial indicator for assessing bladder function and health status. Previous studies have explored non-invasive … Read more
Introduction The paper featured in this issue is titled Using eye-tracking to identify pedestrians’ critical visual tasks. This article studies the critical visual tasks of pedestrians, which is the first step in residential road lighting design guidelines. An eye tracker was used to record pedestrians’ visual fixations while walking outdoors during the day and at … Read more
The founder of Arduino commented: This open-source microcontroller: “You don’t need anyone’s permission to create amazing things.” You can use it to write code that produces such visual effects You can also create interactive effects with Arduino Daniel Rozin’s Penguins Mirror Daniel Rozin’s pom pom mirror 🎙️ This time we are inviting SKD instructor who … Read more
Lai Ruiqiang (Quanzhou Huaguang Vocational College, Quanzhou, Fujian 362121) Abstract: With the continuous development of smart campuses, the access control system of school computer rooms is also gradually becoming intelligent. This article designs an access control system for computer rooms using NB-IoT technology. The access control system is mainly controlled by Arduino Mega2560 Pro, and … Read more
What is the working principle of lcd1602? 1. Segment Display The dot matrix liquid crystal consists of M×N display units. Assuming the LCD screen has 64 rows and each row has 128 columns, every 8 columns correspond to 1 byte of 8 bits, meaning each row consists of 16 bytes, totaling 16×8=128 dots. The screen … Read more
1. Making the Obstacle Avoidance Car 1. Preparations for Making the Obstacle Avoidance Car Hardware: Arduino UNO, L298N driver module, ultrasonic module, car chassis, servo module, a breadboard, and some Dupont wires. Software: Arduino UNO programming download software Here is an image of the installed setup: 2. Understanding the Servo Module We are using a … Read more
Want to connect a key to your computer for practicing CW transmissions? On lcwo.net’s transmission practice, you can input Morse code by pressing buttons. Websites like lcwo.net for online Morse practice and morsecode.me for real-time communication using Morse allow you to input Morse code by clicking the mouse or pressing a key on the keyboard—of … Read more
Click the blue text to follow us Metamaterials are materials composed of periodic or quasi-periodic sub-wavelength structures (called meta-atoms) that have attracted widespread attention in optics, electronics, physics, materials science, and other fields due to their unique physical properties. Metasurfaces refer to planar arrays of meta-atoms arranged in a 2D manner. Metasurfaces have a wide … Read more