In electrical automation projects, RS485 communication is often encountered, and many beginners are not very familiar with it. Today, we will discuss the applications related to RS485, and you will find that there is indeed a lot of knowledge involved. We will choose some common issues that are often considered in engineering for your reference. … Read more
To begin with, let’s recall what the normal operating voltages of CAN_H and CAN_L are. When there are issues with the CAN bus, it is often accompanied by various faults, such as abnormal dashboard displays, the vehicle failing to start, or failing to turn off after starting, etc. We will mainly introduce the 8 common … Read more
5. Short Circuit of CAN L to Power (Positive) When a short circuit occurs between CAN L and the power (positive), due to the fault tolerance characteristics of the CAN bus, the entire CAN network may be unable to communicate or generate related fault codes. Because of the short circuit of CAN L to the … Read more
When there are issues with the CAN bus, it is often accompanied by various faults, such as abnormal dashboard displays, the vehicle not starting, or not being able to turn off after starting, etc. We will mainly introduce the eight common types of CAN bus faults and specific troubleshooting methods. Below is the main text. … Read more
What to do if some functions of the router networking are not working? In fact, after using the router for networking, various functions in the network may fail to work. This is mostly due to configuration issues with the router. Let’s take the Huawei router as an example to look at the solutions. Networking Environment … Read more
The switch is a very important part of network construction, and some friends have doubts about how to choose a switch. Before choosing a switch, you should first understand how switches are used in networking. This article summarizes the networking methods of switches in four network scenarios and common troubleshooting solutions. 1. Small Network A … Read more
Click the “Mechanical and Electronic Engineering Technology” above to follow us 1.No Filament Extrusion After Starting Print This is a common issue for 3D printing beginners. Fortunately, this problem is relatively easy to solve. There are four possible reasons for the extruder not pushing out filament. 1.1Filament not loaded into the extruder before printing starts … Read more
Whether it’s a board made by someone else or a PCB board designed and produced by yourself, the first thing to do upon receiving it is to check the integrity of the board, such as issues with soldering, cracks, short circuits, open circuits, and drilling. If the function of the board is relatively strict, it’s … Read more
Introduction For beginners in electronic technology, mastering basic circuit principles, the functions and characteristics of components, how to analyze circuit diagrams, reading PCBs, soldering techniques, and common troubleshooting methods are all essential skills that need to be well understood. This article discusses how to read PCBs, hoping to assist beginners. PCB stands for printed circuit … Read more
The LCD TV has a black screen, and the backlight is not lit. If you shine a flashlight on it, you can see that the screen is displaying images normally. This indicates that the LCD panel is not damaged, providing the necessary conditions for repair. Remove the backlight from the LCD panel. At this point, … Read more