1. Characteristics of Automotive Electronic Control Unit Repair The automotive electronic control unit (ECU) is the core component of various automotive electronic control systems. When faults occur in these systems, many issues may be related to the ECU. However, compared to other components and circuits in the automotive electronic control system, the failure probability of … Read more
01 Identifying the ProblemI have a STM32F407G-DISC1 development board, with the MCU being STM32F407VGT6. Recently, I needed to use this board for a test, but it turned out to be non-functional. After sitting idle for a long time, it was prone to failure.I conducted some troubleshooting, first checking that there were no short circuits between … Read more
WeChat Official Account:Electromagnetic Compatibility Home Issue 2778 1.Problem Description An industrial display screen experienced blue screen issues and system crashes during ESD (Electrostatic Discharge) testing, with ±6kV contact discharge applied to the network port, USB, and serial port. The system could recover after a power cycle, but the tests failed. This issue has persisted for … Read more
In Linux systems, process management is a very important function. The pstree command displays running processes in a tree diagram format, which is more intuitive than the ps command, making the output visually appealing. Today, we will learn about this super useful command—pstree.1. What is the pstree Command?The pstree command is used to display running … Read more
Click the "Linux Tech Enthusiast" above and select "Set as Star" to receive high-quality articles promptly. ☞【Essentials】ChatGPT 4.0 is unlocked, no limit on questions!!! ☞【Essentials】Tsinghua University senior's self-study Linux notes, top-level quality! ☞【Essentials】Comprehensive guide to commonly used Linux commands, all in one article. ☞【Essentials】Collection! Linux basic to advanced learning roadmap. Link: https://mp.weixin.qq.com/s/Rey0gSnnj-zoAEwE6J-Gjw The performance of … Read more
Temperature Sensor Failure Troubleshooting 【Function and Role of Wall-Mounted Boiler Temperature Sensors】 The temperature sensor is generally located on the inlet pipe and at the outlet of the heat exchanger, detecting the water temperature and transmitting it to the control board to display the temperature and maintain a constant temperature. 【Phenomenon Analysis】 The actual water … Read more
Hello everyone, today we will discuss a classic problem that causes countless engineers to lose their hair—microcontroller program malfunction. Just like a novice driver suddenly losing control of a car, when a program malfunctions, the microcontroller may suddenly freeze, restart, or execute strange actions. Last week, I encountered a funny case: the customer’s production line … Read more
After the delivery of a previous design project, due to an operational error by the on-site debugging personnel, the exposed wire ends touched the circuit board (which was coated with a conformal coating) when the rear panel of the device was opened, ultimately causing a short circuit. The feedback from the site indicated that the … Read more
Hello everyone, I am Xing Ge. Today, let’s talk about fault diagnosis for Siemens PLCs. As an automation engineer, encountering system failures is a common occurrence. However, being able to quickly locate and resolve issues is a true skill! Below, I will share my accumulated experience in PLC fault diagnosis over the years, hoping to … Read more
Introduction Mastering system monitoring commands is a fundamental skill for Linux operation and maintenance. This note aims to organize and summarize commonly used monitoring commands along with their core functions and practical scenarios, facilitating quick review and learning to enhance system management and troubleshooting efficiency. 1. Comprehensive Performance Monitoring (CPU, Memory, Load) 1.<span>top</span> •Core Function: … Read more