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Merge pull request #255 from FengHua741/master
更新双子座120Ω跳线 更新can掉线潜在解决方法
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Original file line number | Diff line number | Diff line change |
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# CAN的报错 | ||
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在Klipper中使用CAN工具板可能导致以下两种报错 | ||
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* MCU 'xxx' *shutdown*: *Timer too close* This often indicates the host computer is overloaded | ||
* lost communication with mcu 'xxx' | ||
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![lost](../../images/guides/klippererro/lost.png) | ||
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![ttc](../../images/guides/klippererro/timer.jpg) | ||
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# 可能原因 | ||
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* 上位机和 MCU 之间的连接不可靠 | ||
* 电源不足/过载/过热等等 | ||
* 连接线松动 | ||
* CAN缓存不足 | ||
* 使用驱动的细分太高 | ||
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# 潜在的解决方案 | ||
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- 修改CAN缓存,至少修改成1024 | ||
- 降低驱动细分最好16 | ||
- 检查硬件/电缆/连接器。整个打印机中的任何电缆都可能导致短路,从而可能导致 MCU 崩溃或者短连 | ||
- 确保上位机、主板与CAN使用质量好的电源装置并且最好供地 | ||
- CAN阻值没有处于`60Ω`需要CAN H与CAN L在断电情况下使用万用表量阻值 | ||
- 当打印非常热时(挤出机和/或床),所需的电流可能会使电源过载。降低温度,如果错误消失,则说明所用电源太弱 | ||
- 主机或主电源供电不足/过载 | ||
- 其他 USB 设备(例如网络摄像头)占用 USB 通信 |
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