Media媒体
Board photos, schematic sheets, renders, videos, and test captures stay attached to the projects and engineering stages they document.板卡照片、原理图分页、渲染图、视频和测试截图，都按它们所记录的项目与工程阶段归档。
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Clawdy Family Project MarkClawdy Family 项目标识
The orange-and-black “Clawdy Family” graphic is one of the commissioning team's project marks for Claude Chime and serves as the project page cover.橙黑色 “Clawdy Family” 图形是委托团队用于 Claude Chime 的项目标识之一，并作为项目页面封面。
Media, grouped by project按项目分类的媒体库
Each chapter keeps its source project, engineering context, and records together.每一个分区都把项目来源、工程背景和对应媒体放在一起，不再混成一张总图墙。
Claude Chime Power BoardClaude Chime 电源板
For an independent hardware commission from Accele AI, I designed and hand-assembled the ESP32 peripheral power board for Claude Chime. The roughly 28 × 27 mm PCB combines single-cell charging, two separate boost rails, on-demand battery-voltage sensing and a 5 V push-pull solenoid driver. I completed basic bring-up and the software handoff on the only V1.0 spin, and the client's firmware engineer later reported normal complete-device operation.受 Accele AI 委托，我独立设计并手工焊接了 Claude Chime 的 ESP32 外围电源板。约 28 × 27 mm 的 PCB 上有单节锂电池充电、两路独立升压、按需接通的电池电压采样和 5 V 推拉式电磁铁驱动。V1.0 一次打板，我完成了基础上电和软件交接，客户固件工程师随后反馈整机运行正常。
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Cirro Phase-Change Cooling Controllers卷云相变散热器控制系统
At Juanyun, I independently completed BaseUnit and three-board ACUnit hardware, firmware, and integration, then continued into automatic control and maintenance. The company team performed the later refrigeration tests.在卷云实习期间，我独立完成 BaseUnit 与三板 ACUnit 的硬件、固件和整机联调，随后继续参与自动控制与维护。后期完整制冷测试由公司团队执行。
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02.01Image图像Power and signal routes in the V2.0 ACUnit diagramV2.0 ACUnit 图里的电源与信号路径
The titled V2.0 diagram traces power, sensing, control, display, and user-interface paths across power, main-control, and interaction boards.这张自带 V2.0 标题的图跨分电板、主控板与交互板，追踪电源、传感、控制、显示和用户交互路径。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.02Image图像V2.1 ACUnit interface mind mapV2.1 ACUnit 接口思维图
A Chinese branch map listing power buses, STM32, fan, EEV, sensor, UART, wireless, SWD, interaction, and OLED connections around three boards.中文分支图围绕三块板列出电源总线、STM32、风扇、EEV、传感器、UART、无线、SWD、交互与 OLED 连接。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.03Image图像Connectors around the ACUnit main board围住 ACUnit 主控板的连接器
Front-side render with an STM32 package, labeled sensor and display headers, edge connectors, reset, and a Wi-Fi module position.正面渲染可见 STM32 封装、带标签的传感与显示排针、板边连接器、复位键和 Wi-Fi 模块位置。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.04Image图像Main-board routing from the back从背面看主控板走线
The back render exposes mounting holes, through-hole pads, vias, and routing that the component-heavy front view hides.背面渲染露出安装孔、通孔焊盘、过孔与走线，补上器件密集正面看不到的部分。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.05Image图像DC input and 12 V terminal on the power board分电板上的 DC 输入与 12 V 端子
Front render grouping a DC jack, blade fuse, conversion components, a 470-marked inductor, and the +12V/PGND screw terminal.正面渲染把 DC 插座、片式保险丝、变换器件、标着 470 的电感与 +12V/PGND 螺钉端子放在一起。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.06Image图像Wide copper on the power-board back分电板背面的宽铜箔
Back-side view of the same board, where broad copper shapes, mounting holes, and the DC-jack connection are visible without component clutter.同一块板的背面视角，宽铜箔、安装孔与 DC 插座连接不再被正面器件遮住。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.07Image图像Encoder and two buttons on the interaction board交互板上的编码器与两个按键
The front render reduces the user-input surface to one rotary encoder, two push buttons, six header pads/holes, and four mounting holes.正面渲染把用户输入收在一只旋转编码器、两个按键、六个连接焊盘 / 孔与四个安装孔上。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.08Image图像Interaction-header labels from the back从背面读交互板排针标签
The rear view makes the six header labels A, B, G, EK, KP, and KN legible beside the encoder and button footprints.背面视角让 A、B、G、EK、KP、KN 六个排针标签与编码器、按键焊盘的对应关系更清楚。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.09Image图像5 V pressure-sensor specification screenshot5 V 压力传感器规格截图
The product image labels a Sanhua YCQB02H31 with 5 V supply, 0-20 bar range, 0.5-4.5 V output, and a two-metre lead; it does not show selection or testing.产品图标注三花 YCQB02H31、5 V 供电、0-20 bar、0.5-4.5 V 输出和两米线长；画面不说明它已经选型或测试。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.10Image图像140 mm four-pin PWM fan specification screenshot140 mm 四针 PWM 风扇规格截图
The screenshot lists 140 x 140 x 25 mm, 12 V, 1800+/-10% RPM, and a four-pin PWM connector as candidate interface constraints, not measured platform results.截图列出 140 x 140 x 25 mm、12 V、1800+/-10% RPM 与四针 PWM 接口，可作候选约束，不能当作平台实测结果。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.11Image图像Populated V2.1 ACUnit main board完成装配的 V2.1 ACUnit 主控板
The assembled main board shows the populated STM32, edge connectors, ESP-01S module, and labeled sensor and control headers that had previously appeared only in renders.装配后的主控板实物可见 STM32、板边连接器、ESP-01S 模块，以及此前只出现在渲染图中的传感与控制接口。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.12Image图像Populated V2.1 ACUnit power board完成装配的 V2.1 ACUnit 分电板
The populated power board brings the DC input, fuse, conversion stage, terminal block, and board-level indicators into one workbench view.装配后的分电板把 DC 输入、保险丝、变换电路、接线端子和板上指示器件落到了同一张工作台实拍中。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.13Image图像Populated V2.1 ACUnit interaction board完成装配的 V2.1 ACUnit 交互板
The assembled interaction board shows the rotary encoder and two push buttons as soldered hardware rather than PCB-render placeholders.交互板实拍把旋转编码器与两个按键呈现为已经焊接完成的硬件，不再只是 PCB 渲染中的器件位置。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.14Image图像12 V reading during power-board bring-up分电板上电时的 12 V 测量
With the power board energized on the bench, the multimeter display reads 12.03 V during the recorded output check.分电板在工作台上通电后，万用表在这次输出检查中显示 12.03 V。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.15Image图像24 V reading during power-board bring-up分电板上电时的 24 V 测量
A second energized-board check records 24.21 V on the multimeter display; the accompanying development record provides the rail context.另一张上电检查照片记录了万用表显示的 24.21 V；具体测量节点由配套开发记录提供语境。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.16Image图像Six-page DHT11 / AM2302 board task plan六页 DHT11 / AM2302 小板任务计划
The cover belongs to an assigned plan for two sensor breakouts, with another development owner named and board, soldering, and MCU checks listed as later milestones in the plan.封面来自两种传感器小板的分配任务，署名另一位开发负责人，并在计划中把发板、焊接与 MCU 检查列为后续节点。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.17Image图像Cover image for the separate hardware SOP独立硬件 SOP 的封面图
This image marks the separate self-authored SOP preserved as its own note and PDF; the cover itself does not summarize the document.这张图指向以独立笔记与 PDF 保留的自写 SOP；单看封面并不能概括文档内容。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.18Image图像Cirro Tech archive cover卷云科技归档封面
A company logo and wordmark used to identify the Juanyun archive context; the mark is not presented as personal design work.用于标识卷云归档语境的公司 Logo 与字标，不把这套标识呈现为个人设计作品。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.19Image图像U2 package between the EEV headersEEV 接口之间的 U2 封装
The render shows a four-signal header, an SOP16 U2 package, a five-position output connector, and four LED footprints; the paired schematic identifies U2 as ULN2003A.渲染显示四路信号排针、SOP16 的 U2 封装、五位输出连接器与四个 LED 位置；配套原理图才把 U2 标为 ULN2003A。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
02.20Image图像Four EEV channels through a ULN2003A穿过 ULN2003A 的四路 EEV 通道
The schematic routes four inputs through ULN2003A channels to the output connector and attaches an LED-resistor branch to each driven node.原理图让四路输入穿过 ULN2003A 通道到达输出连接器，并在每个驱动节点上接一支 LED 电阻支路。
Project source · Cirro cooling controllers项目来源 · 卷云散热控制系统
Custom Driver Board and Sensorless FOC自制驱动板与无感 FOC 实践
I designed and assembled an STM32F446/DRV8301 driver, adapted open-source firmware, and ran a compressor on a 12 V bus with 30 to 80 Hz open-loop commands. Sensorless handoff remains unresolved.我独立设计、装配 STM32F446/DRV8301 驱动板，适配开源固件，在 12 V 母线下用 30 到 80 Hz 开环指令带动压缩机；无感接管仍未完成。
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03.01Image图像Custom FOC Board and Compressor Bench自制 FOC 板与压缩机台架
The cover brings the custom driver board and compressor bench into one frame. It represents the learning route and does not imply a completed sensorless takeover.封面把自制驱动板与压缩机台架放进同一画面。它代表这条学习路线，不表示无感闭环已经完成接管。
Project source · Sensorless FOC driver项目来源 · 自制驱动板与无感 FOC
03.02Image图像Custom Driver Board Front Render自制驱动板正面渲染
The front render records the STM32F446, DRV8301, six power MOSFETs, controls, and three-phase connector before fabrication. It is layout evidence rather than runtime evidence.正面渲染记录打板前的 STM32F446、DRV8301、六颗功率 MOSFET、交互器件与三相端子。它证明布局内容，不证明运行状态。
Project source · Sensorless FOC driver项目来源 · 自制驱动板与无感 FOC
03.03Image图像Custom Driver Board Back Render自制驱动板背面渲染
The back render exposes routing and copper distribution on the independently laid out board. It remains design evidence rather than an assembled-board photograph.背面渲染展开我独立 Layout 的走线与铺铜分布。它仍是设计证据，不是装配完成后的实物照片。
Project source · Sensorless FOC driver项目来源 · 自制驱动板与无感 FOC
03.04Image图像STM32F446 Control and Timing SheetSTM32F446 控制与时序分页
This sheet maps six complementary PWM signals, ADC channels, Hall and encoder interfaces, USB, SWD, SPI, and board controls around the STM32F446RET6.这一页围绕 STM32F446RET6 排布六路互补 PWM、ADC、Hall 与编码器接口、USB、SWD、SPI 和板上交互信号。
Project source · Sensorless FOC driver项目来源 · 自制驱动板与无感 FOC
03.05Image图像Motor Power and Service Connectors电机电源与调试接口分页
The connector sheet routes U/V/W, Hall inputs, 12 V power, OLED, serial, fan PWM, ST-Link, and USB-C interfaces to the rest of the board.连接器分页把 U/V/W、Hall 输入、12 V 电源、OLED、串口、风扇 PWM、ST-Link 与 USB-C 接到其余电路。
Project source · Sensorless FOC driver项目来源 · 自制驱动板与无感 FOC
03.06Image图像Current Voltage and Temperature Sampling电流电压与温度采样分页
The sampling sheet contains two phase-current channels, bus current and voltage, three phase-voltage dividers, PCB temperature, and the 1.65 V bias path used by the analog front end.采样分页包含两相电流、母线电流与电压、三相电压分压、PCB 温度，以及模拟前端使用的 1.65 V 偏置通路。
Project source · Sensorless FOC driver项目来源 · 自制驱动板与无感 FOC
03.07Image图像HY3010D Three-Phase Power StageHY3010D 三相功率级
Six HY3010D MOSFETs form the U/V/W half-bridges. The same sheet shows 20 mΩ phase shunts and a 4 mΩ bus shunt used by the current-sensing paths.六颗 HY3010D 组成 U/V/W 三组半桥，同页还能看到采样通路使用的 20 mΩ 相电阻与 4 mΩ 母线电阻。
Project source · Sensorless FOC driver项目来源 · 自制驱动板与无感 FOC
03.08Image图像DRV8301 Gate Driver and 5 V SupplyDRV8301 栅极驱动与 5 V 电源分页
The DRV8301DCAR connects six PWM inputs to three gate pairs and exposes SPI, EN_GATE, nFAULT, OCTW, current-shunt outputs, and the 5 V buck stage.DRV8301DCAR 把六路 PWM 接到三组栅极，并引出 SPI、EN_GATE、nFAULT、OCTW、电流采样放大输出和 5 V 降压级。
Project source · Sensorless FOC driver项目来源 · 自制驱动板与无感 FOC
Video视频03.09Video视频Onsite SMT Feeder and Pick-and-Place Setup现场 SMT 上料与贴片机设置
I loaded the feeders and set the pick-and-place coordinates before operating the SMT equipment for this board. The clip records that manufacturing step.我先完成上料与贴片坐标设置，再操作 SMT 设备生产这块板。视频记录的正是这一段制造过程。
Project source · Sensorless FOC driver项目来源 · 自制驱动板与无感 FOC
03.10Image图像Assembled Board and Compressor Bench装配板与压缩机台架
The 12 V bench photograph shows the assembled board, compressor, supply, measurement tools, and live firmware work. It proves the physical setup rather than refrigeration-loop performance.12 V 台架照片同时拍到装配板、压缩机、电源、测量工具与现场固件工作。它证明实物联调，不证明完整制冷回路性能。
Project source · Sensorless FOC driver项目来源 · 自制驱动板与无感 FOC
Video视频03.11Video视频Final Low-Speed EC11 Open-Loop Demo最终低速 EC11 开环演示
The final 30-80 Hz EC11 version records 12 V open-loop operation with both compressor ports open. Manual inlet restriction later in the clip is a disturbance observation rather than pressure or flow validation.最终 30-80 Hz EC11 版本记录 12 V 开环运行，压缩机吸排气口均保持开放。后段人工限制吸气口只是一项扰动观察，不是压力或流量验证。
Project source · Sensorless FOC driver项目来源 · 自制驱动板与无感 FOC
03.12Image图像FOC and SVPWM Signal ChainFOC 与 SVPWM 信号链
This original diagram reconstructs the firmware path from Clarke and Park transforms through dq current control to SVPWM compare values, center-aligned PWM, gate pulses, and phase current.这张原创图依照固件重建从 Clarke、Park 与 dq 电流控制到 SVPWM 比较值、中心对齐 PWM、栅极脉冲和相电流的路径。
Project source · Sensorless FOC driver项目来源 · 自制驱动板与无感 FOC
AD831 Active Mixer BoardAD831 有源混频器板
EEE307 coursework at XJTLU: an RF mixer board built around ADI's AD831 that turns a 120 MHz signal and a 130.7 MHz LO into a 10.7 MHz IF. It started from a contest-guide reference circuit and went through four PCB versions in five weeks, mostly reworking the input high-pass and the IF output.西浦 EEE307 课程作业。用亚德诺的 AD831 做了一块射频混频器板，把 120 MHz 的 RF 和 130.7 MHz 的本振混成 10.7 MHz 中频。从电赛备赛指南里的参考电路起步，五个星期改了四版 PCB，主要在折腾输入端的高通和中频输出端。
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Video视频04.01Video视频AD831 mixer demo videoAD831 混频器演示视频
The coursework demonstration, trimmed to start at the circuit: supplies, RF/LO input networks, the on-chip IF filter and amplifier, then the bench test where the 10.7 MHz IF disappears when either source is switched off.课程作业的演示视频，从讲电路开始剪：电源、RF 和本振输入网络、片内中频滤波与放大，然后是台架测试，关掉任意一路信号源，10.7 MHz 中频就消失。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.02Image图像V1 bare board, frontV1 裸板正面
V1, ordered on 20 October 2025 and drawn from the contest guide's chapter 8 reference circuit.V1，2025 年 10 月 20 日下单，照着电赛备赛指南第 8 章的参考电路画。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.03Image图像V2 bare board, frontV2 裸板正面
V2 tightens the layout around the chip and adds the shunt capacitor C16 on the IF output.V2 把布局往芯片周围收紧，在中频输出线上加了对地电容 C16。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.04Image图像V3 bare board, frontV3 裸板正面
V3 turns the IF output into series R3 with shunt R8 and C16, and moves the LO coupling capacitor to C17.V3 把中频输出改成串联 R3 加对地 R8、C16，本振耦合电容换到 C17。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.05Image图像V4 bare board, frontV4 裸板正面
V4 clears the IF output down to a single RL footprint for trying resistor values; this is the version used for the final measurements.V4 把中频输出收成一个 RL 焊盘，方便试不同阻值；最终测量用的就是这一版。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.06Image图像V1 bare board, backV1 裸板背面
The back of V1, with the JLCPCB batch code ending in 251020 and the AwesOmeE signature.V1 的背面，嘉立创批次号以 251020 结尾，旁边是 AwesOmeE 签名。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.07Image图像Four soldered versions, stacked叠在一起的四版成品
All four soldered versions stacked on copper standoffs, with SMA connectors on each board.四版焊好的板子用铜柱叠在一起，每块都带 SMA 接头。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.08Image图像Assembled mixer board焊好的混频器板
A soldered board on top of the stack: AD831 in PLCC-20, the ±5 V terminal block and three SMA ports.叠在最上面的成品：PLCC-20 封装的 AD831、±5 V 接线端子和三个 SMA 口。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.09Image图像Debugging at the studio在工作室调试
Battery-box supply, tinySA Ultra as the 120 MHz RF source, SG6-A as the 130.7 MHz LO, and an ALIENTEK DS100 handheld scope reading the 10.7 MHz IF.电池盒供电，tinySA Ultra 出 120 MHz 的 RF，SG6-A 出 130.7 MHz 本振，正点原子 DS100 手持示波器看 10.7 MHz 中频。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.10Image图像V4 3D renderV4 的 3D 渲染
LCEDA 3D render of the final V4 layout.最终 V4 布局的立创 EDA 3D 渲染。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.11Image图像V1 3D renderV1 的 3D 渲染
LCEDA 3D render of V1, before any of the input and output changes.V1 的立创 EDA 3D 渲染，输入输出端还没开始改。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.12Image图像Final schematic最终原理图
Final schematic: 220 pF and 82 pF input high-pass with a 51 Ω shunt, 220 pF LO coupling, 470 pF IF filter capacitors and a 10 dB output amplifier set by R1 and R2.最终原理图：输入端 220 pF、82 pF 两级高通加 51 Ω 对地，本振 220 pF 耦合，中频 470 pF 滤波电容，R1、R2 把输出放大器定在 10 dB。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.13Image图像V4 PCB layoutV4 的 PCB 布局
V4 copper layout with short RF, LO and IF traces and a solid ground pour.V4 的铜层布局，RF、本振、中频走线都很短，地铺完整。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.14Image图像IF output on the handheld scope手持示波器上的中频输出
The 10.72 MHz IF at 150 mVpp on the ALIENTEK DS100.正点原子 DS100 上的 10.72 MHz 中频，峰峰值 150 mVpp。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.15Image图像IF capture on the RIGOLRIGOL 上的中频存图
The RIGOL capture at 1 MΩ input: 204 mVpp at 10.75 MHz.RIGOL 在 1 MΩ 输入下的存图：10.75 MHz，204 mVpp。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.16Image图像IF spectrum from the RIGOL captureRIGOL 存图的中频频谱
FFT of the saved IF waveform: the 10.7 MHz peak, with the 130.7 MHz LO leakage about 34 dB below it.对存下的中频波形做 FFT：10.7 MHz 主峰，130.7 MHz 本振泄漏比它低约 34 dB。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.17Image图像RF input spectrumRF 输入的频谱
Spectrum of the 120 MHz RF input with its harmonics.120 MHz RF 输入及其谐波的频谱。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
04.18Image图像LO input spectrum本振输入的频谱
Spectrum of the 130.7 MHz LO input with its harmonics.130.7 MHz 本振输入及其谐波的频谱。
Project source · AD831 active mixer项目来源 · AD831 有源混频器
GaN Quadrotor ESC Final-Year ProjectGaN 四旋翼电调毕业设计
For my XJTLU final-year project I built a quadrotor ESC around INN100EA035A GaN FETs and LMG1210 drivers, with a Si MOSFET board as the reference. After five board spins, one spectacular shoot-through and an AM32 port, both boards finished a propeller-loaded comparison at matched speeds of 3000, 6500 and 10000 rpm.西浦本科毕设。我用 INN100EA035A 氮化镓功率管和 LMG1210 驱动做了一块四旋翼电调，再做一块 Si MOSFET 电调作参考。打了五次板，炸过一次很壮观的直通，移植了 AM32，最后两块板在 3000、6500、10000 rpm 三个对齐的转速下完成了带桨对比。
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05.01Image图像Final GaN ESC, assembled组装完成的 GaN 电调
The assembled GaN ESC: XT30 input, three INN100EA035A half-bridges driven by LMG1210, and an AT32F421 running the adapted AM32 firmware.组装好的 GaN 电调：XT30 输入，三相 INN100EA035A 半桥由 LMG1210 驱动，主控 AT32F421 跑移植后的 AM32 固件。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
05.02Image图像Final Si reference ESC, assembled组装完成的 Si 参考电调
The assembled Si reference ESC, with NTTFS010N10MCL MOSFETs and FD6288Q drivers.组装好的 Si 参考电调，功率管为 NTTFS010N10MCL，驱动为 FD6288Q。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
05.03Image图像Bare Si and GaN boardsSi 与 GaN 裸板
Unassembled Si and GaN ESC PCBs side by side, with the XJTLU crest on the silkscreen.未焊接的 Si 和 GaN 电调 PCB 并排摆放，丝印上有西浦校徽。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
05.04Image图像Board size comparison两块板的尺寸对比
The two bare boards measured side by side before assembly.焊接前两块裸板并排测量尺寸。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
05.05Image图像Placing parts on stencilled paste在钢网锡膏上贴片
After hand soldering the QFN parts kept failing, paste went on through a stencil and every part was placed by hand before reflow on a hot plate.QFN 手焊总是焊不好，后来改成钢网刷锡膏，再手工逐个贴片，最后上加热台回流。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
05.06Image图像GaN board after hot-plate reflow加热台回流后的 GaN 板
The GaN board after reflow on a hot plate driven by hand along a reflow temperature profile.GaN 板在加热台上手动跟着回流温度曲线焊完的样子。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
05.07Image图像GaN route key partsGaN 路线的关键器件
The AT32F421K8U7 controller, LMG1210 half-bridge driver and an INN100EA035A GaN FET used on the GaN board.GaN 板上用到的 AT32F421K8U7 主控、LMG1210 半桥驱动和 INN100EA035A 氮化镓功率管。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
05.08Image图像Propeller-loaded test bench带桨测试台
The bench used for the final tests: bench supply, oscilloscope, thermal camera and the STM32 test controller, with the ESCs driving a 2207.5 motor and a 5-inch propeller.最终实验用的台架：台式电源、示波器、热像仪和 STM32 测试控制器，电调驱动 2207.5 电机和 5 寸螺旋桨。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
05.09Image图像STM32 test controllerSTM32 测试控制器
The STM32F103 board that generated DShot commands, ran the P0 to E3 test sequences and showed voltage, current and power on an OLED, with an HC-05 module for remote start.STM32F103 测试控制器，负责发出 DShot 指令、执行 P0 到 E3 的测试流程，并在 OLED 上显示电压、电流和功率，HC-05 模块用来远程启动。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
05.10Image图像GaN ESC PCB renderGaN 电调 PCB 渲染
3D render of the GaN ESC layout, the image used as this project's cover.GaN 电调的 3D 渲染图，也是这个项目的封面。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
05.11Image图像Si and GaN layoutsSi 与 GaN 的布局
Copper views of the two boards. The Si reference was redrawn so its power path follows the GaN layout.两块板的铜层视图。Si 参考板重画过一次，让功率路径跟着 GaN 板走。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
05.12Image图像Annotated power loops功率回路标注
The commutation power loops marked on each layout.在两块板的布局上标出的换流功率回路。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
05.13Image图像Comparison setup对比实验的系统结构
The two ESC routes, the shared motor and propeller load, the STM32 test controller and the measurements taken in E1, E2, E3 and P0.两条电调路线、共用的电机和螺旋桨负载、STM32 测试控制器，以及 E1、E2、E3、P0 各自采集的数据。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
05.14Image图像DShot commands for matched speed对齐转速所需的 DShot 指令
P0 result: the DShot command each board needed to reach 3000, 6500 and 10000 rpm with the propeller fitted.P0 结果：带桨时两块板分别需要多大的 DShot 指令，才能转到 3000、6500 和 10000 rpm。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
05.15Image图像Input power at matched speed同转速下的输入功率
E1 mean input power over three runs per point. At 10000 rpm the GaN board drew about 27.0 W and the Si board about 45.0 W.E1 每个转速点跑三次取平均的输入功率。10000 rpm 时 GaN 板约 27.0 W，Si 板约 45.0 W。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
05.16Image图像W-phase switching edges at 10000 rpm10000 rpm 下的 W 相开关边沿
E2 rising and falling edges at the W-phase node for both boards at 10000 rpm.E2 实验中两块板在 10000 rpm 时 W 相节点的上升沿和下降沿。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
05.17Image图像Thermal sequence at 10000 rpm10000 rpm 热像序列
E3 thermal images of both boards from 0 to 600 s at 10000 rpm, centred on the V-phase transistors.E3 实验中两块板在 10000 rpm 下从 0 到 600 s 的热像，画面中心对准 V 相功率管。
Project source · GaN quadrotor ESC项目来源 · GaN 四旋翼电调
Seamly2D Qt Development Internship南京图灵 Seamly2D 开发实习
In a three-week internship, I brought an unfamiliar Qt codebase into operation, added local accounts and role management, and prepared a Windows installer and an unsigned macOS package for review and handoff.三周实习里，我从配置 Qt、编译陌生代码库开始，为 Seamly2D 加入本地账户和角色管理，再完成 Windows 安装包与 macOS 无签名包的演示和交接。
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06.01Image图像The upstream application behind the internship这段实习所基于的 Seamly2D 上游项目
Seamly2D is the open-source patternmaking application I brought up, extended with a local account layer, and packaged during the three-week Qt internship; the upstream software and wordmark are not my work.三周 Qt 实习围绕 Seamly2D 展开。我跑通上游工程、加入本地账户层并尝试打包；软件本体与项目标识并非我的作品。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.02Image图像Three weeks of full-time Qt development in Nanjing南京三周全职 Qt 实习
The portfolio cover places the work in its Nanjing internship context. The institute mark is existing institutional material, not a personal logo design.这张封面交代南京线下实习背景；研究院标识属于既有机构材料，并非个人 Logo 设计。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.03Image图像The Qt Kit that finally matched the source终于与源码配对的 Qt Kit
The first full build worked only after Qt 6.5.3 MSVC2019 64-bit, the v142 compiler, qmake, architecture, and Kit selection agreed. The Qt mark itself is upstream brand material.Qt 6.5.3 MSVC2019 64-bit、v142 编译器、qmake、架构与 Kit 对齐后，完整构建才通过；Qt 标识本身属于上游品牌材料。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.04Image图像CMake study beside a qmake project在 qmake 项目旁展开的 CMake 学习
I studied CMake, generators, toolchains, and package discovery in parallel while Seamly2D itself remained on qmake; the CMake mark is upstream brand material.我并行学习了 CMake、生成器、工具链与包发现，但 Seamly2D 本身始终使用 qmake；CMake 标识属于上游品牌材料。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.05Image图像Separating rule generation from build execution把规则生成与构建执行分开
This upstream tutorial diagram helped separate CMake's generation of a Makefile from make's execution of the resulting rules; it was saved as study material, not drawn by me.这张上游教程图把 CMake 生成 Makefile 与 make 执行规则分开表示；它是我保存的学习资料，并非个人绘图。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.06Image图像Build-toolchain archive sketch构建工具链档案草图
A handwritten sketch preserved in the internship archive groups toolchain setup, CMake/Ninja rules, and compiler/linker outputs; the file does not identify its author.实习档案中保留的手绘草图，把工具链配置、CMake/Ninja 规则与编译器/链接器产物放在一起；文件没有注明作者。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.07Image图像Notion-export copy of the CMake-to-Make tutorial diagramCMake 到 Make 教程图的 Notion 导出副本
The Notion export embeds a copy of the same upstream tutorial diagram shown above; it is a duplicate asset, not a separate CMake flow artifact.Notion 导出嵌入的是上方同一张上游教程图的副本；这是重复资产，不是另一张独立的 CMake 流程图。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.08Image图像Parent-child environment-variable flow父子进程的环境变量流向
One DeepSeek-generated Mermaid export in the Notion build note shows environment variables loading into a parent process, then being copied to a child process.Notion 编译笔记中的 DeepSeek 生成 Mermaid 图，表示环境变量进入父进程后再复制给子进程。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.09Image图像Visual Studio, Windows SDK, and toolchain mapVisual Studio、Windows SDK 与工具链关系图
This generated Mermaid map from the Notion note places Visual Studio beside its integrated development environment, Windows SDK, Win32 API, and compiler toolchain.Notion 笔记中的生成式 Mermaid 关系图，把 Visual Studio、集成开发环境、Windows SDK、Win32 API 与编译工具链放在同一张图上。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.10Image图像CMake configure-and-generate sequenceCMake 配置与生成阶段时序图
A DeepSeek-generated sequence diagram separates CMake's configure and generate stages before handing the generated build files to a native build tool.DeepSeek 生成的时序图把 CMake 的 Configure 与 Generate 阶段分开，再将生成的构建文件交给本机构建工具执行。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.11Image图像Ninja dependency-scheduling sequenceNinja 依赖调度时序图
The generated sequence follows Ninja as it loads build.ninja, checks files, orders the dependency graph, schedules compile tasks, and invokes the linker.生成式时序图跟随 Ninja 读取 build.ninja、检查文件、排列依赖图、调度编译任务并调用链接器。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.12Image图像CMake rule-generation pathCMake 构建规则生成路径
A compact DeepSeek-generated flow in the source note moves from CMakeLists.txt through project parsing, dependency analysis, platform adaptation, and native build-rule output.原始笔记中的 DeepSeek 生成流程图，从 CMakeLists.txt 依次经过项目解析、依赖分析、平台适配与本机构建规则输出。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.13Image图像Ninja compile-and-link sequenceNinja 编译与链接时序图
This DeepSeek-generated Mermaid export makes the division visible. Ninja schedules the DAG, compiler jobs produce objects, and the linker emits the executable.DeepSeek 生成的 Mermaid 图把分工画开。Ninja 调度依赖图，编译器生成目标文件，链接器再产出可执行程序。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.14Image图像Qt 6 package-discovery sequenceQt 6 包发现时序图
The generated Qt 6 package-discovery sequence follows CMake to Qt6Config.cmake and imported targets such as the Qt 6 Core target, or to an error when the config is absent.生成式 Qt 6 包发现时序图跟随 CMake 查找 Qt6Config.cmake、创建 Qt 6 Core 等导入目标，未找到配置时则报错终止。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.15Image图像Qt 6 package search orderQt 6 包搜索顺序
Another generated diagram in the Notion note compares CMAKE_PREFIX_PATH, Qt6_DIR, and default system paths during Qt package discovery.Notion 笔记中的另一张生成图比较了 Qt 包发现时的 CMAKE_PREFIX_PATH、Qt6_DIR 与系统默认路径。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.16Image图像Qt installation directory rolesQt 安装目录分工图
The generated directory map labels bin for runtime tools, include for development headers, lib for link-time files, and lib/cmake for package configuration.生成式目录图把 bin 标为运行时工具区、include 标为开发头文件区、lib 标为链接文件区，lib/cmake 则放包配置。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.17Image图像windeployqt dependency-collection sequencewindeployqt 依赖收集时序图
A generated sequence diagram shows windeployqt scanning an executable's Qt dependencies and copying core DLLs, platform plugins, and resources into a deployment directory.生成式时序图展示 windeployqt 扫描可执行程序的 Qt 依赖，并把核心 DLL、平台插件与资源复制到部署目录。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.18Image图像Qt runtime dependency mapQt 运行时依赖关系图
This DeepSeek-generated map connects the built executable, Qt DLL/plugin locations, and windeployqt's collection step; non-Qt libraries still need separate handling.DeepSeek 生成图串起已构建程序、Qt DLL/插件位置与 windeployqt 收集步骤；非 Qt 库仍需另行处理。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
06.19Image图像Build-failure first-check map构建失败的第一轮检查图
The final generated troubleshooting chart begins with the first error, then branches toward architecture/compiler, generator arguments, or build type according to the symptom.最后一张生成式排错图从第一条错误开始，再按现象分到架构/编译器、生成器参数或构建类型检查。
Project source · Seamly2D Qt internship项目来源 · Seamly2D 开发实习
NUEDC 2025 Simple Self-Aiming Device2025 电赛简易自行瞄准装置
Problem E of the 2025 National Undergraduate Electronic Design Contest: an MSPM0 line-tracking car carrying a K230 gimbal that aims a laser at a target. I captained a team of three that had to knock on seven or eight doors for a supervisor and nearly missed registration. In 84 hours we burned a core board and threw away a gimbal, and came out with a Jiangsu second prize, XJTLU's first NUEDC award.2025 年全国大学生电子设计竞赛 E 题：一辆 MSPM0 循迹小车，车上架着 K230 云台，用激光去打靶心。我当队长的三人队，找指导老师敲了七八扇门，报名差点没赶上；84 小时里烧了一块核心板、扔了一个云台，最后拿了江苏省二等奖，也是西浦在电赛上的第一个奖。
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Video视频07.01Video视频Aiming while driving边跑边打靶
A run on the practice track on the last evening before sealing: the car follows the line toward the target and the laser spot lands on the bullseye.封箱前最后一晚在练习跑道上的一段：车沿着黑线朝靶子开过去，最后光斑落在靶心上。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
Video视频07.02Video视频Line tracking laps循迹跑圈
The car lapping the one-metre square track counterclockwise, turning in at each right-angle corner.小车在 1 m 见方的跑道上逆时针跑圈，每到直角弯就往里拐。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
Video视频07.03Video视频Gimbal tracking on the bench桌面上的云台追踪测试
A bench test of the PWM-servo gimbal chasing a target shown on a laptop screen.PWM 舵机云台的桌面测试，追着笔记本屏幕上的靶子转。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
Video视频07.04Video视频K230 detection testK230 识别测试
An early K230 test on day two, picking out the target displayed on a laptop screen.第二天的一次 K230 早期测试，在笔记本屏幕上找靶子。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.05Image图像Rendering of the car, front整车渲染图，前侧
The finished car: MSPM0 chassis, eight-channel grey-scale bar at the front, and the K230 on a two-axis servo gimbal.完成后的整车：MSPM0 底盘，车头一条八路灰度传感器，K230 架在二维舵机云台上。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.06Image图像Rendering of the car, rear整车渲染图，后侧
The same car from the other side, showing the motors and the wiring.同一辆车的另一侧，能看到电机和接线。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.07Image图像Pin map for the MSPM0 and K230MSPM0 与 K230 的引脚分配
Every pin the car uses: encoders, six grey-scale inputs, motor direction and PWM, MPU6050 I2C and interrupt on the MSPM0, plus the two servos and the relay on the K230.整车用到的每个引脚：MSPM0 上的编码器、六路灰度输入、电机方向与 PWM、MPU6050 的 I2C 和中断，K230 上的两个舵机和继电器。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.08Image图像Power topology of the car整车电源拓扑
One 12 V battery, two power systems: RT8279 and RT9013 for the MSPM0 side, and three LM2596 bucks behind their own switch for the K230, servos and laser.一块 12 V 电池，两套电源：MSPM0 那边是 RT8279 加 RT9013，K230、舵机和激光那边是单独开关的三颗 LM2596。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.09Image图像Entries at the Jiangsu judging venue江苏赛区测评现场的作品区
Each school's entries in a taped-off square. XJTLU's square, at the far wall, held a single box.每所学校的作品放在胶带围出的一格里。西浦那一格在最里头靠墙，只有一个箱子。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.10Image图像The balance car built during preparation备赛时做的双轮平衡车
The two-wheeled STM32 balance car built from my own schematic during the two months of preparation.备赛两个月里，照着自己画的原理图做的 STM32 双轮平衡车。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.11Image图像Debugging with the oscilloscope during preparation备赛时用示波器调试
A practice car on the bench during preparation, with a RIGOL oscilloscope on its signals.备赛时桌上的一辆练习车，RIGOL 示波器正接在它的信号上。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.12Image图像OLED lit up during preparation备赛时点亮的 OLED
An OLED brought up over I2C during preparation.备赛时通过 I2C 点亮的一块 OLED。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.13Image图像The C07A core board that burned烧掉的那块 C07A 核心板
The MSPM0 core board that died on day two when the grey-scale sensors' 5 V outputs went straight into its 3.3 V pins.第二天烧掉的 MSPM0 核心板：灰度传感器的 5 V 输出直接接进了它只能承受 3.3 V 的引脚。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.14Image图像Our bench in the lab during the contest比赛期间我们在实验室的工位
Day three of the contest in the lab, one of my teammates working at the bench.比赛第三天的实验室，一位队友在工位上调试。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.15Image图像Debugging on with flying wires板子烧了以后飞线接着调
Day three in the lab, after the core board burned: the car kept running on the spare board through a nest of flying wires while the new chip was on its way.比赛第三天的实验室，核心板烧掉以后：新芯片还在路上，车靠备用板和一大把飞线接着调。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.16Image图像The car on the track facing the target跑道上对着靶子的小车
The car on the practice track with the K230 screen facing the target.练习跑道上的小车，K230 的屏幕正对着靶子。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.17Image图像The box sealed by the organisers组委会封条封好的箱子
The finished car boxed and closed with the Jiangsu organising committee's seal at 8 pm on 2 August.8 月 2 日晚 8 点，做好的车装进箱子，贴上江苏赛区组委会的封条。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.18Image图像The car packed for judging装箱待测的小车
The car packed in bubble wrap after sealing, ready to travel to Nanjing.封箱后裹着气泡膜装进箱子的小车，准备带去南京。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.19Image图像Unpacking at the venue测评现场开箱
Taking the car out of its box at the Jiangsu judging venue.在江苏赛区测评现场把车从箱子里取出来。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.20Image图像The car on the judging track测评跑道上的小车
The car on the judging track with the target set up behind it.测评跑道上的小车，靶子立在后面。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.21Image图像The target sheet靶纸
The A4 target: a black-taped border, a red bullseye and red rings at 2 cm steps.A4 靶纸：黑胶带围出外框，红色靶心，外面是每隔 2 cm 一圈的红色圆环。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.22Image图像The Jiangsu division backdrop江苏赛区背景板
The 2025 TI Cup NUEDC Jiangsu division backdrop at the judging venue in Nanjing.南京测评现场，2025 年 TI 杯电赛江苏赛区的背景板。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.23Image图像The team at the Jiangsu division backdrop三人在江苏赛区背景板前
The three of us in front of the backdrop on judging day.测评那天，我们三个人在背景板前。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.24Image图像Award certificate获奖证书
The Jiangsu division second-prize certificate for the XJTLU team.西浦参赛队的江苏赛区二等奖证书。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.25Image图像The team at the SAT building三人在 SAT 楼前
The three of us with the car and the certificate in front of the SAT sign.我们三个人带着小车和证书，在 SAT 的字牌前。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
07.26Image图像The car on display with its certificate和证书一起展出的小车
The car and its certificate on display in the SAT building.小车和证书一起在 SAT 楼里展出。
Project source · NUEDC self-aiming car项目来源 · 电赛自行瞄准小车
Tianjin Jintie STM32 Internship天津津铁 STM32 嵌入式实习
During a month of foundational training at Tianjin Jintie, I planned my own STM32 learning sequence and combined external sensors, display, encoder, servo, and LED control in a working bare-metal demo.在天津津铁一个月的基础实习中，我自行安排 STM32 学习顺序，从外设小实验做起，最后把传感器、显示、编码器、舵机与 LED 控制接进同一套裸机演示。
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08.01Image图像STM32F103C8T6 Pins and Alternate-Function ReferenceSTM32F103C8T6 引脚与复用功能参考
After moving from Arduino pin numbers to STM32 alternate functions, this LQFP48 map became my desk reference. GPIO, USART, ADC, and timers were no longer just function names but real pins whose ports, channels, and alternate mappings had to agree.从 Arduino 的引脚编号转到 STM32 外设复用后，这张 LQFP48 引脚图成了我的桌面地图。GPIO、USART、ADC 与 Timer 不再只是函数名，而是需要同时核对端口、通道和复用关系的真实引脚。
Project source · Tianjin Jintie STM32项目来源 · 天津津铁 STM32 实习
08.02Image图像Tianjin Jintie Communications Embedded Internship Cover天津津铁通信嵌入式实习项目封面
This processed Tianjin Rail Transit mark records the setting of the work. I was an Embedded Systems Intern at Tianjin Jintie Communications, based in the Group headquarters, completing self-directed STM32 training and a bench demo rather than production rail-system development.这张处理后的天津轨道交通标志记录项目发生的实习语境。我以天津津铁通信嵌入式实习生身份在集团总部办公，完成的是 STM32 自学与培训 demo，并未参与生产轨道系统开发。
Project source · Tianjin Jintie STM32项目来源 · 天津津铁 STM32 实习
08.03Image图像180° Servo Pulse Reference Table180° 舵机脉宽参考表
The servo exercise used this table to map a 0.5–2.5 ms high time within a 20 ms period onto 0°–180°. It is a Timer/PWM setup reference, not an oscilloscope measurement.舵机练习用这张表把 20 ms 周期内的 0.5–2.5 ms 高电平时间对应到 0°–180°。它是配置 Timer/PWM 时使用的参数参考，不是示波器实测波形。
Project source · Tianjin Jintie STM32项目来源 · 天津津铁 STM32 实习
DIY Laptop CoolerDIY 压风式笔记本散热器
I built an acrylic-and-foam laptop cooler, with a Windows application sending temperatures over Bluetooth to an ESP32 fan controller. A later STM32 board reached serial control but never rejoined the complete system.我做了一台亚克力与泡棉散热器，用 Windows 程序读取温度，经蓝牙控制 ESP32 和风扇。后来重画的 STM32 板完成了串口控制，尚未重新接成完整的温控整机。
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Video视频09.01Video视频One Click Connected Windows Temperature to Fan Duty一次点击，把 Windows 温度接到风扇占空比
The 3 min 57 s recording demonstrates the integrated Windows, Bluetooth SPP, and ESP32 chain. Temperatures appear in the app, duty and mode appear on the OLED, and the fan responds to data and buttons. The recording does not contain synchronized temperature, RPM, or performance logs.这段 3 分 57 秒录像演示了 Windows、Bluetooth SPP 与 ESP32 完整链路。上位机显示温度，OLED 显示占空比与模式，风扇响应数据和按键；录像不包含同步温度、RPM 或性能日志。
Project source · DIY laptop cooler项目来源 · DIY 笔记本散热器- 09.02Image图像
Nine A1 mini Build Plates That Remained Digital停留在数字阶段的九块 A1 mini 切片板
The long enclosure was split across nine A1 mini build plates with automatic tree supports. Modeling and slicing were completed; printing and assembly were not.长外壳被拆分到九块 A1 mini 切片板，并配置自动树状支撑；建模与切片完成，打印和装配没有进行。
Project source · DIY laptop cooler项目来源 · DIY 笔记本散热器 
09.03Image图像Brim and Skirt Settings That Never Reached the Printer没有走到打印的 Brim 与 Skirt 设置
The unprinted enclosure used three skirt loops, a 5 mm outer brim, and a 0.1 mm gap in this slicing pass. These settings record preparation, not a fabricated result.这次切片为未打印外壳设置了三圈 Skirt、5 mm 外侧 Brim 与 0.1 mm 间隙；这些参数只记录准备过程，不代表制造结果。
Project source · DIY laptop cooler项目来源 · DIY 笔记本散热器
09.04Image图像Reorienting the Enclosure Parts With Manual Tree Supports手动支撑下重新摆放外壳分件
A manual-tree-support pass compares orientations for the same enclosure parts. This mechanical revision remained a model and slicing study.手动树状支撑方案比较了同一组外壳分件的摆放姿态；这版机械结构停留在模型与切片研究阶段。
Project source · DIY laptop cooler项目来源 · DIY 笔记本散热器
09.05Image图像A Tighter STM32 Board Without the Complete Wireless Chain更紧凑、但未接回完整无线链路的 STM32 板
The STM32 revision reorganized routing and reduced board size while retaining 12 V input, USB-C, two fan interfaces, OLED/Bluetooth headers, and five buttons. The PCB was soldered, powered, and tested by serial fan commands, but not installed in the cooler.STM32 版本重新整理走线并缩小板卡，同时保留 12 V 输入、USB-C、两路风扇、OLED / Bluetooth 排针和五个按键；PCB 完成焊接、上电与串口风扇命令测试，但没有装入散热器。
Project source · DIY laptop cooler项目来源 · DIY 笔记本散热器
09.06Image图像USB-UART and Dual-Fan Interfaces on the STM32 VersionSTM32 版的 USB-UART 与双风扇接口
The schematic combines an STM32F103C8T6, CH340N USB-UART, dual fan interfaces, 12 V-to-5 V conversion, five buttons, and OLED/Bluetooth headers. Serial fan control was tested; the Windows automatic-temperature path was not restored.原理图组合了 STM32F103C8T6、CH340N USB-UART、双风扇接口、12 V 转 5 V、五个按键及 OLED / Bluetooth 排针；串口风扇控制完成测试，Windows 自动温度链路没有恢复。
Project source · DIY laptop cooler项目来源 · DIY 笔记本散热器
Arduino Breadboard Two-Digit Seven-Segment CounterArduino 面包板两位数码管计数器
For MEC104 Group A17, I handled most of the two-digit counter’s wiring, firmware, and debugging. Testing the display segments and measuring switch contacts resolved faults that code changes had not.我承担 MEC104 A17 组两位计数器的大部分搭建、编程与调试。数码管接法和六脚按键先后出问题，我通过逐段试灯、测量开关通断，把显示、暂停和复位调通。
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10.01Image图像Two BCD display paths in the report两条 BCD 显示链的报告示意图
The report written by my teammates fans an Arduino Uno into two decoder/display branches and places two switches alongside them. It records the system topology; the breadboard I built and integrated used an Arduino Nano.组员撰写的作业报告从 Arduino Uno 分出两路译码/显示支路，并在旁边接入两个开关。它记录的是系统拓扑；我实际联调的面包板使用 Arduino Nano。
Project source · Seven-segment counter项目来源 · 两位数码管计数器- Video视频10.02Video视频
The 17-second clip only captured changing digits只留下数字变化的 17 秒现场视频
The clip only shows both digits changing while the Arduino Nano remains powered; it does not capture a button press. Pause and reset passed the classroom demonstration, but this video cannot serve as visual evidence for them.镜头只拍到了 Arduino Nano 上电后两位数字持续变化，没有拍下按键操作。暂停和复位最终通过了课堂演示，但不能拿这段视频充当它们的影像证据。
Project source · Seven-segment counter项目来源 · 两位数码管计数器 
10.03Image图像A17 rollover, pause, and reset requirementsA17 归零、暂停与复位要求
This slide defines the group-number build with two digits, rollover after 17, plus pause and reset. Counting through 99 was a separate version that I produced by changing the threshold, then flashed and demonstrated independently.这页课件定义了小组号版本，两位显示，到 17 后归零，并支持暂停和复位。计数到 99 再归零是另一个改完阈值后单独烧录、单独验证的版本。
Project source · Seven-segment counter项目来源 · 两位数码管计数器
10.04Image图像The three-stage display path I only understood later我后来才看懂的三段显示链路
The slide reduces the system to Arduino, BCD decoder, and seven-segment display. During the project I was connecting those stages one at a time; only later did I join software state, decoder outputs, and LED current into one explanation.课件把系统压成 Arduino、BCD 译码器和数码管三段。项目当时我只是在逐段接通；现在回看，才真正把软件状态、译码输出和 LED 电流路径连成一条链。
Project source · Seven-segment counter项目来源 · 两位数码管计数器
10.05Image图像BCD logic does not define the current directionBCD 逻辑之外，还有电流方向
The slide marks A-D inputs, a-g outputs, power, and segment resistors around a 7447-style device. Four BCD bits select a number; whether it lights still depends on output polarity, the display common, and the actual current path.这页标出了 7447 类器件的 A-D 输入、a-g 输出、供电和段限流。四位 BCD 只决定数字；显示能否点亮，还取决于驱动极性、公共端和实际电流路径。
Project source · Seven-segment counter项目来源 · 两位数码管计数器
10.06Image图像A six-pin switch mapped with a multimeter靠万用表摸清的六脚按键
Without a matching datasheet, the six pins produced no response, unstable readings, and repeated triggers. I borrowed a multimeter and checked continuity pair by pair before reconnecting the pause and reset functions.没有对应数据手册时，六只脚让我遇到没反应、乱跳和重复触发。我借来万用表逐对测通断，先确认按下前后的内部连接，再把暂停和复位接回程序。
Project source · Seven-segment counter项目来源 · 两位数码管计数器
10.07Image图像From a one-digit demo to two-digit integration从一位 demo 到两位联调
Development roughly followed the course sequence. I read the material, ran a one-digit BCD example, wired two digits, split units and tens, added the buttons, then integrated the system. The two demo sketches were early checkpoints, not the final program.实际开发大致沿着课件顺序推进。我先读资料和跑一位 BCD 示例，再铺两位接线、拆分个位与十位、加入按键，最后联调。两份 demo sketch 都只是前期检查点。
Project source · Seven-segment counter项目来源 · 两位数码管计数器
10.08Image图像The CD4511 simulation omitted a polarity assumption漏掉极性前提的 CD4511 仿真
TinkerCAD uses a CD4511 to drive a common-cathode display, while the physical LS47 path was intended for common-anode operation. Both decode BCD, but they cannot use the same common-pin connection; that mismatch produced the dark or scrambled display.TinkerCAD 用 CD4511 驱动共阴数码管，实物的 LS47 路径却面向共阳显示。两者都做 BCD 译码，但不能共用同一个公共端接法；这正是当时不亮/乱码故障的来源。
Project source · Seven-segment counter项目来源 · 两位数码管计数器
10.09Image图像Two decoder branches in the A17 reportA17 报告中的双译码支路
The cropped report places two decoders between an Arduino Uno and two displays, with resistors and switches nearby. It captures the intended branch relationship; the circuit I built and integrated on the bench used an Arduino Nano.报告裁图把两颗译码器放在 Arduino Uno 与两位数码管之间，旁边还有电阻和开关。它说明了预期支路关系；我实际搭建和联调的是 Nano 面包板版本。
Project source · Seven-segment counter项目来源 · 两位数码管计数器
10.10Image图像How one state becomes units and tens一个状态怎样拆成个位和十位
`Num % 10` extracts units and `(Num / 10) % 10` extracts tens. Each result selects a four-bit BCD row for its own decoder; this was the two-digit split I learned while building the project.`Num % 10` 取个位，`(Num / 10) % 10` 取十位；两个结果各自查一行四位 BCD，再送进两颗译码器。这是我当时边查资料边学会的两位显示拆分。
Project source · Seven-segment counter项目来源 · 两位数码管计数器
10.11Image图像A button screenshot that cannot settle the final wiring无法替最终硬件下结论的按键截图
The excerpt checks switch 1 with HIGH and switch 2 with LOW, while the report also mentions a pull-up. Both buttons passed the classroom demonstration, but without the final wiring and source this image cannot prove a tidy polarity or debounce implementation.截图里 switch 1 用 HIGH，switch 2 用 LOW，报告文字还提到上拉。最终两个按键确实通过了课堂演示，但缺少最终源码与接线，不能据此补出一套整齐的极性或消抖实现。
Project source · Seven-segment counter项目来源 · 两位数码管计数器
Arduino Smart Car Line-Tracking KitArduino 循迹小车焊接与控制实训
I assembled and tested an Arduino car kit, learned to trace its power, sensing, and motor circuits, and helped tune the team’s car to a top-5-percent finish in the campus lap-speed challenge.我从裸 PCB 开始装配 Arduino 小车，逐项检查电源、传感和电机功能，再参与赛道调试；小组最终进入校内圈速挑战前 5%。
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11.01Image图像Course Reference Smart-Car Assembly课程参考车装配示意
The green reference car shows the kit's intended layout with a Nano-format controller, two driven wheels, a battery holder, and front collision arms. It is not the purple build documented in this project.绿色参考车展示套件的预期布局，包括 Nano 尺寸控制板、两只驱动轮、电池盒和前缘碰撞拨杆；它并非本项目记录的紫色实物。
Project source · Line-tracking car项目来源 · Arduino 循迹小车
11.02Image图像Purple Chassis From Below紫色小车底面
The underside of the assembled purple chassis exposes the through-hole joints, six downward-facing IR tracking sensors, two drive wheels, ball caster, and long-arm collision switches around the edge.装配后的紫色底盘翻到背面，通孔焊点、六个朝下的红外循迹传感器、两只驱动轮、滚珠万向轮和沿板边布置的长臂碰撞开关都直接可见。
Project source · Line-tracking car项目来源 · Arduino 循迹小车
11.03Image图像Populating the Purple PCB at the Bench在焊台上装配紫色 PCB
The assembly record catches the board mid-solder, with its circular parts map open on the monitor and a multimeter beside the iron.装配记录停在焊接进行时。显示器上打开圆形元件布局图，电烙铁旁放着万用表。
Project source · Line-tracking car项目来源 · Arduino 循迹小车
11.04Image图像Power, Inputs, and Motion in One Diagram一张图串起电源、输入与运动
The manual connects four AAA cells through a power IC to the controller, routes PWM through L293 to two motors, and returns six IR inputs, six switches, and two keys through 74XX165.手册把四节 AAA 电池经电源芯片接到控制器，再让 PWM 经 L293 驱动双电机；六路红外、六个开关和两个按键则通过 74XX165 返回主控。
Project source · Line-tracking car项目来源 · Arduino 循迹小车
11.05Image图像From Soldering to Troubleshooting从焊接走到故障排查
The course frame separates four aims. These were to practise soldering, build the car from the given circuit, troubleshoot problems, and work as a team while writing a professional report.课程把目标拆成四项。练习焊接，按给定电路完成小车装配，开展故障排查与问题解决，并以团队协作完成专业报告。
Project source · Line-tracking car项目来源 · Arduino 循迹小车
11.06Image图像LM7805 Sets the 5 V RailLM7805 建立 5 V 电源轨
The course slide's schematic places 100 µF and 0.01 µF capacitors on both sides of the LM7805 and labels a 5 V output, linking the regulator stage to supply filtering.课件页原理图在 LM7805 输入、输出两侧各放置 100 µF 与 0.01 µF 电容，并标出 5 V 输出，把稳压级与电源滤波联系起来。
Project source · Line-tracking car项目来源 · Arduino 循迹小车
11.07Image图像Reflection, Collision, and Wheel Speed反射、碰撞与轮速
The course slide separates contact inputs from optical ones. An impact switch and a key provide contact inputs, an emitter-receiver pair tracks black and white, and an IR speed sensor reads a striped wheel.课件页把接触输入与光学输入分开。碰撞开关与按键负责触发，收发一体的红外对管辨别黑白，条纹轮盘则由红外测速传感器读取。
Project source · Line-tracking car项目来源 · Arduino 循迹小车
11.08Image图像Fourteen Inputs, One Serial Read Path十四路输入，一条串行读取路径
The course slide counts six collision switches, six IR channels, and two keys as fourteen inputs; its parallel-in/serial-out model explains why the kit cascades two 74HC165s before the controller.课件页把六个碰撞开关、六路红外和两个按键合计为十四路输入；并入串出的模型解释了套件为何在主控前级联两颗 74HC165。
Project source · Line-tracking car项目来源 · Arduino 循迹小车
11.09Image图像L293 Reverses the Geared MotorsL293 让减速电机正反转
On the course slide, the H-bridge sketches show how reversing the applied polarity changes motor direction; L293 packages that drive stage between the controller and two geared motors.课件页中的 H 桥示意图说明反转施加极性会改变电机方向；L293 把这一级驱动封装在控制器与两只减速电机之间。
Project source · Line-tracking car项目来源 · Arduino 循迹小车
11.10Image图像Duty Cycle Sets Average Motor Drive占空比设定电机平均驱动
The course slide's 50% and 80% pulse trains, plus 10/50/90% examples, show how duty cycle changes the average drive applied to a motor; the project code then adjusts the left- and right-wheel PWM commands separately.课件页用 50% 与 80% 脉冲列和 10/50/90% 示例说明占空比如何改变施加到电机的平均驱动；项目代码随后分别调整左右轮的 PWM 指令。
Project source · Line-tracking car项目来源 · Arduino 循迹小车
11.11Image图像Six Tests Before Full Line Tracking完整循迹前的六项测试
The course slide prescribes separate checks for LED, keys, collision switches, IR tracking channels, motors, and IR speed sensing; the supplied code also offered variants with and without the RGB LED.课件页规定逐项检查 LED、按键、碰撞开关、红外循迹通道、电机和红外测速；配套代码还提供带 RGB LED 与不带 LED 两种版本。
Project source · Line-tracking car项目来源 · Arduino 循迹小车
11.12Image图像One Lap Brings the Signal Chain Together一圈赛道把整条链路接起来
The optional course slide asks the car to follow one black-line lap, awarding a 3% bonus within 70 s and another 2% for beating half the groups; the project record later reports a top-5% finish.可选挑战课件页要求小车沿黑线跑完一圈。70 秒内完成可获 3% 额外加分，超过半数小组再获 2%；项目记录显示这台车最终进入圈速前 5%。
Project source · Line-tracking car项目来源 · Arduino 循迹小车
