Circuit Design
Open Source ESP32C3FH4 Core Board Design
I previously open-sourced the ESP32C3WROOM board, and today I’m open-sourcing the ESP32C3FH4. You can directly obtain the engineering files at the Lichuang Open Source Square. https://oshwhub.com/zctnb/works Actually, the chips are the same, but the ESP32C3WROOM is a module, while the ESP32C3FH4 is a chip that integrates 4MB of flash. Let me explain for those who … Read more
What Is a Hardware Engineer?
1. What is Hardware? Baidu Baike describes “Hardware (English name Hardware) is the abbreviation of computer hardware (terms used in mainland China and Hong Kong, while Taiwan refers to it as hardware), which refers to various physical devices composed of electronic, mechanical, and optoelectronic components in a computer system. These physical devices form an organic … Read more
High-Speed Circuit PCB Design Methods and Techniques
Part of Electronic Book Screenshots 【Complete Set of Hardware Learning Materials Collection】
Embedded Design Insights: Component Addition Risks
Introduction In circuit design, neglecting ESD protection and isolation design to reduce costs can lead to serious consequences. This article will explore circuit issues caused by improper component addition and provide practical solutions to ensure the reliability and stability of circuit design. In circuit design, some neglect ESD protection and isolation design to cut costs, … Read more
Level Matching Issues in Circuit Design
Introduction In circuit design, level matching is a fundamental requirement, yet it is often overlooked, which can lead to device failures and communication anomalies. In this article, we will reveal how to avoid device failures caused by level mismatches and provide practical design advice to ensure your circuit designs are both efficient and stable. Level … Read more
Troubleshooting the Aishuo Anwen 400 Microcomputer Power Supply Output Failure
Click the aboveblue text, send it to your friends circle, and share more information together😉 This power supply is for an assembled computer. When measuring the output purple and green wires, there is no voltage to ground. It is determined that the auxiliary power supply is faulty. Initially, it was thought that the auxiliary power … Read more
Disassembling USB Wireless Network Card: A Classic Circuit Design
Many desktop computers do not have wireless network cards and can only connect via Ethernet. To use WiFi, you can simply plug in a USB wireless network card, which is convenient: The USB wireless network card is very compact, leading to curiosity about how the circuit board fits inside: Next, we will disassemble a model … Read more
USB Interface Based Heating Temperature Control Board Using ESP32-C3
▼Follow WeChat Official Account: Hardware Insights▼ Part 01 Introduction A foreign expert has created a heating temperature control board using the ESP32-C3, complete with schematic and PCB. Those interested can learn from it. The schematic includes the minimum system circuit, USB Type-C interface circuit, 3.3V voltage conversion circuit, heating control circuit, temperature sensing circuit, rotary … Read more
Embedded Interface Protection Design
The interface is the most common component in embedded devices, serving as a channel for data transmission while providing isolation and protection for the circuit. Today, let’s explore a common solution for interface protection design. A gas discharge tube is a short-circuit protection device encapsulated in ceramic or glass, filled with low-pressure inert gases (such … Read more