DIY 3D PRINTER 103cbt6 canot connect

Basic Information:

Printer Model: DIY
MCU / Printerboard: STM32F103CBT6

Describe your issue:

I made a 3D print motherboard for the APM32CBT6 (compatible with the firmware of STM32) and an APM32 development board.

Now the develop board can be recognized normally when flashed into the Klipper firmware.

But the 3D printe motherboard flashed into the same Klipper firmware can not be recognized,

The 3D printed motherboard can use the timer, external 8M crystal oscillator, and serial port ,adc, normally using my separately compiled firmware .

But the fluiid web page doesn’t recognize the 3D printed motherboard.


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