Young Innovator Creates Affordable Drone Using Chopsticks, Receives 130,000 Likes!

Young Innovator Creates Affordable Drone Using Chopsticks, Receives 130,000 Likes!

Reporter: Liang YajiaNews Hotline: 0771-5690127Tip-off Email: [email protected] Recently, A young man from Dezhou, Shandong, born in the 1990s, named Zhao posted a video of a drone he made using chopsticks as the body, which attracted the attention of netizens. The drone costs only a few dozen yuan, and Zhao completed it in just 3 days … Read more

8 Key Functions of a Multimeter: Do You Understand Them All?

8 Key Functions of a Multimeter: Do You Understand Them All?

What is a multimeter? A multimeter, also known as a multi-tester, volt/ohm meter, is a versatile measuring instrument that can be classified into analog and digital types. It is a multifunctional, multi-range measuring device that can generally measure DC current, DC voltage, AC current, AC voltage, resistance, and audio levels. Some models can also measure … Read more

Creating an Oscilloscope Using a Television

Creating an Oscilloscope Using a Television

Back in 1989, when I couldn’t afford an oscilloscope but really wanted one, I searched through all the bookstores in the county and finally found a schematic for making an oscilloscope using a television. After building it, I used it for many years. Now, finished oscilloscopes are everywhere, and I don’t know which mouse has … Read more

How to Use a Digital Oscilloscope

How to Use a Digital Oscilloscope

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Outdoor Testing of Wireless Transmission and Reception Modules

Outdoor Testing of Wireless Transmission and Reception Modules

01 Wireless Transmission and Reception 1. Introduction Yesterday, I tested this micro 433MHz receiving module, which can read the transmitted coding information through programming the microcontroller. I am now preparing to conduct outdoor tests with a battery and the transmitting module. The LED status on the receiving module will indicate whether the reception is normal. … Read more

Considerations for Embedded Kitchen Appliances: Aesthetic Appeal and Safety First!

Considerations for Embedded Kitchen Appliances: Aesthetic Appeal and Safety First!

As modern kitchens in small apartments tend to have limited space, and with the increasing variety of modern appliances, placing all of them on the countertop can lead to a cluttered appearance. To make these appliances blend more harmoniously with the overall kitchen decor, embedded kitchen appliances are becoming increasingly popular. However, many people are … Read more

Homemade Drone Successfully Takes Flight! A High School Student’s Sudden Inspiration Creates the ‘Dreamer’

Homemade Drone Successfully Takes Flight! A High School Student's Sudden Inspiration Creates the 'Dreamer'

“Yes, we did it!” Accompanied by a round of cheers, a homemade drone safely landed on the open space of the campus at Caihe Middle School in Hangzhou. This drone is the result of weeks of hard work by Zhu Yongjun and his team. Zhu Yongjun Recently, Zhu and his partners conducted a test flight … Read more

Essentials of Welding Machine Maintenance 03

Essentials of Welding Machine Maintenance 03

(1) The drive waveform of soft switch welding machines rises and falls at an angle, as shown in the figure below. The waveform of hard switch machines is like a single tube wave, rising and falling straight. Issues with absorption can cause spikes in the waveform. During maintenance, some waveforms may be unfamiliar; if the … Read more

Common PCB Layout Constraint Principles

Common PCB Layout Constraint Principles

A good circuit board not only needs to achieve the functionality of the circuit design but also must consider electrical characteristics such as EMI, EMC, ESD (Electrostatic Discharge), and signal integrity. Additionally, mechanical structure and heat dissipation issues for high-power chips must be taken into account. On this basis, the aesthetic aspect of the circuit … Read more

Summary of PCB Process Design Experience

Summary of PCB Process Design Experience

PCB Network City News Today, we share a summary of experiences in PCB process design, hoping to inspire industry colleagues.1 PCB Basic Technology 1.1 PCB Size and Shape The welding processing dimensions of PCB materials are width (200mm~250mm) * length (250mm~300mm).For PCBs with a long edge less than 125mm or a short edge less than … Read more