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网上找了很多资料，都没有一个比较系统的方法，连某宝上面的套件也要你买成品他才给你开源并提供全套技术标准。求教怎么自制一台3d打印机，精度还不能太低。至少能打到公差1毫米级别的。一次能够打印10*10*...

如图题，在某宝买了两块SG3525模块，打算直推MOS管，替代ZVS，用市电整流推高压包。但在过程中R10电阻一直烧，一直没有正常运行过。自己搭的电路如下，里面的R10电阻，基本一通电就冒烟发光。某宝...

暑假想做一个lcd12864的badapple，现在显示器能单独显示，但SD卡中的内容读不出来，不清楚是什么原因，可能是程序出错了，也有可能是SD卡出错了，扇区什么物理地址和逻辑地址都试过了就是不能显...

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