Solenoid Valve and BLDC Fan Archive Notes螺线管阀门与 BLDC 风扇归档笔记

Starting Point起点

This set of material is scattered. One side is solenoid-valve control, with an STM32F103 project, an electromagnetic-valve driver board, OLED, EC11 encoder, keys, and ULN2003 / stepper-driver references. The other side is a single-phase BLDC quiet-fan driver board, where the available material is mainly a BOM and an EDA project. They all relate to actuators, motors, and driving circuits, but they have not yet formed one complete main line.

这部分材料比较散。一边是螺线管阀门控制，里面有 STM32F103 工程、电磁阀驱动板、OLED、EC11 编码器、按键和 ULN2003 / 步进驱动参考；另一边是单相 BLDC 静音风扇驱动板，材料只有 BOM 和 EDA 项目。它们都和执行器、电机、驱动有关，但还没有形成一条很完整的主线。

所以先留下来。它现在还不是完整项目，更像一组线索：负载驱动、人机交互、小电机和简单执行器。至少以后回头看时，不会把这些小材料混在大项目旁边悄悄丢掉。

Why Not Delete These Side Materials?为什么不直接删掉这些边角料？

Because they may become useful capability clues later. Actuator driving, OLED display, encoder input, and fan driving are all common fragments in embedded hardware. Individually they look small, but together they form the basic skills behind many control boards.

因为它们可能是后续能力线索。执行器驱动、OLED 显示、编码器输入、风扇驱动，这些都是嵌入式硬件里很常见的碎片。单个看起来不大，但组合起来就是很多控制板的基本功。

问题在于记录还不够完整。现在如果硬写成成熟项目，会显得假。缺少的东西很明确：实物照片、接线图、状态机、测试日志、故障处理、波形或至少一张清楚的运行截图。

What They Can Show For Now目前能说明什么

• The solenoid-valve directory has an STM32F103 control project, driver-board EDA files, and OLED / encoder / key-related material.
• ULN2003 and stepper expansion-board material can serve as references for low-side drive, coil loads, and simple actuator control.
• The BLDC quiet-fan board currently has only a BOM and EDA project, so it is best kept as a direction clue rather than a complete case.
• Vendor examples and tool packages are numerous, but they are not suitable for direct publication on the public site.

• 螺线管阀门目录里有 STM32F103 控制工程、驱动板 EDA 文件、OLED / 编码器 / 按键相关资料。
• ULN2003 和步进扩展板资料可以作为低侧驱动、线圈负载和简单执行器控制的参考。
• BLDC 静音风扇板目前只有 BOM 和 EDA 项目，适合先作为方向线索，暂时不当成完整 case。
• Vendor examples 和工具包很多，但不适合直接搬到公开站点。

Files文件

The page currently provides screened legacy files.

页面现在提供筛选后的 legacy 文件：

• Solenoid main.c
• Solenoid valve control source
• Solenoid valve IOC configuration
• OLED module schematic
• EC11 encoder schematic
• ULN2003 datasheet
• BLDC quiet fan BOM
• BLDC quiet fan EasyEDA project

供应商示例包、可执行工具、完整工程目录、构建输出和重复资料包不放。这里留的是能看出方向的文件，不是完整工程发布。

Records Still Missing还要补的记录

• Add a state diagram for the solenoid valve: open, close, hold, fault, and manual input.
• Add a redrawn wiring diagram for the actuator drive, showing MCU, driver chip, load, and protection positions.
• Add one running screenshot or physical photo for the OLED / encoder interaction.
• For the BLDC fan board, later add target voltage, topology, noise target, and bring-up record.

• 给螺线管阀门补一张状态图：打开、关闭、保持、故障、手动输入。
• 给执行器驱动补一张重画接线图，说明 MCU、驱动芯片、负载和保护位置。
• 给 OLED / 编码器交互补一张运行截图或实物照片。
• BLDC 风扇板后续需要补目标电压、拓扑、噪声目标和 bring-up 记录。

Looking Back Now现在回头看

This kind of material easily falls into two extremes: delete it because it looks small, or inflate it into a large project. Keeping it in the middle is better. It is only a set of clues, but the clues connect to actuator and motor-control work. Once photos, wiring, and runtime records are filled in, it can become a fuller page.

这类材料最容易陷入两个极端：要么觉得小就删掉，要么硬凑成大项目。现在放在中间更合适：承认它们只是线索，但把它们和执行器 / 电机控制方向关联起来。以后照片、接线和运行记录补齐，再写成更完整的页面。