Claude Chime Power BoardClaude Chime 电源板Commissioned Hardware委托硬件项目PCBPower ElectronicsESP32-S3Case study + public files项目记录 + 公开文件2026.04 - 2026.052026.04 - 2026.05Status: Commissioned Hardware. Focus: PCB, Power Electronics, ESP32-S3. Evidence: Case study + public files. Timeline: 2026.04 - 2026.05.状态：委托硬件项目。方向：PCB、Power Electronics、ESP32-S3。证据：项目记录 + 公开文件。时间：2026.04 - 2026.05。Embedded systems, control, power, and motor drives嵌入式、控制、电源与电驱
This is Alvin Li. I develop embedded systems across hardware and firmware. I draw schematics, lay out PCBs, write firmware, and handle board bring-up, hardware-software integration, and bench validation.这里是 Alvin Li，主要做嵌入式软硬件全栈开发。平时会画原理图、布 PCB、写固件，也会做板级调试、软硬件联调和台架验证。
Five prototype images form a nucleus. Three slow rotating orbits with evenly spaced electrons group representative embedded systems, firmware, and engineering tool skills.五张原型图片组成原子核；三条缓慢旋转且电子等距分布的轨道，分别代表嵌入式系统、固件开发和工程工具。
Project evidence index项目证据索引
Open complete archive打开完整归档Claude Chime Power BoardClaude Chime 电源板Commissioned Hardware委托硬件项目PCBPower ElectronicsESP32-S3Case study + public files项目记录 + 公开文件2026.04 - 2026.052026.04 - 2026.05Status: Commissioned Hardware. Focus: PCB, Power Electronics, ESP32-S3. Evidence: Case study + public files. Timeline: 2026.04 - 2026.05.状态：委托硬件项目。方向：PCB、Power Electronics、ESP32-S3。证据：项目记录 + 公开文件。时间：2026.04 - 2026.05。
Cirro Phase-Change Cooling Controllers卷云相变散热器控制系统Completed Internship Project已完成实习项目STM32PCBC/C++Case study + public files项目记录 + 公开文件2025.11 - 2026.052025.11 - 2026.05Status: Completed Internship Project. Focus: STM32, PCB, C/C++. Evidence: Case study + public files. Timeline: 2025.11 - 2026.05.状态：已完成实习项目。方向：STM32、PCB、C/C++。证据：项目记录 + 公开文件。时间：2025.11 - 2026.05。
Seamly2D Qt Development Internship南京图灵 Seamly2D 开发实习Completed已完成QtC++CMakeCase study + public files项目记录 + 公开文件2025.082025.08Status: Completed. Focus: Qt, C++, CMake. Evidence: Case study + public files. Timeline: 2025.08.状态：已完成。方向：Qt、C++、CMake。证据：项目记录 + 公开文件。时间：2025.08。
Tianjin Jintie STM32 Internship天津津铁 STM32 嵌入式实习Completed已完成STM32Rail TransitEmbeddedCase study + public files项目记录 + 公开文件2025.022025.02Status: Completed. Focus: STM32, Rail Transit, Embedded. Evidence: Case study + public files. Timeline: 2025.02.状态：已完成。方向：STM32、Rail Transit、Embedded。证据：项目记录 + 公开文件。时间：2025.02。Education and current direction教育经历与当前方向
Nanyang Technological University, Singapore南洋理工大学·新加坡
Master of Science (Robotics and Intelligent Systems) · Current student机器人与智能系统理学硕士 · 在读
Xi'an Jiaotong-Liverpool University, China西交利物浦大学·中国
BEng Telecommunications Engineering通信工程工学学士
University of Liverpool, United Kingdom利物浦大学·英国
BEng (Hons) Telecommunications Engineering · First Class Honours通信工程工学学士（荣誉）· 一等荣誉学位
Engineering notes工程笔记
All notes全部笔记01Protected Battery Startup Measurements带保护电池的启动测量Battery · Inrush Current · Boost Converter02A Switched Battery Divider and ADC Settling电池采样开关与 ADC 建立时间ADC · Battery · RC Filter03Angle Continuity in Sensorless FOC Handoff无感 FOC 接管时的角度连续性FOC · Observer · EKF04Current Sampling Within a PWM CyclePWM 周期内的电流采样FOC · ADC · PWM05Cooperative Task Timing on the ACUnitACUnit 的协作式任务时序STM32 · Scheduling · EEV
Bench and build media台架与制作影像
All media全部媒体
Power and signal routes in the V2.0 ACUnit diagramV2.0 ACUnit 图里的电源与信号路径
V2.1 ACUnit interface mind mapV2.1 ACUnit 接口思维图
Connectors around the ACUnit main board围住 ACUnit 主控板的连接器
Main-board routing from the back从背面看主控板走线
DC input and 12 V terminal on the power board分电板上的 DC 输入与 12 V 端子
Wide copper on the power-board back分电板背面的宽铜箔Engineering stack and contact工程技术栈与联系
Embedded control and firmware — STM32, ESP32, C/C++, and bare-metal peripheral development嵌入式控制与固件——STM32、ESP32、C/C++ 与裸机外设开发
Hardware development — schematic capture, PCB layout, hand assembly, and staged board bring-up硬件开发——原理图设计、PCB 布局、手工装配与分阶段板级 bring-up
Motor drives and power electronics — PWM, SVPWM, FOC, gate driving, sensing, and power conversion电机驱动与电力电子——PWM、SVPWM、FOC、栅极驱动、采样与电源变换