7-axis 3D printing motherboard V2 based on STM32F401

2023/07/19 Update: After being corrected by the boss in the group, the problem of reset disconnection can be solved without soldering the DP pull-up resistor (R11).
The reason may be that re-enumeration can be achieved in the USB program of STM32M4, and the DP pull-up causes Cannot re-enumerate after reset
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Update on 2023/07/05: As reminded by a group of friends, the limit switch capacitor was drawn incorrectly
and the value of the resistance was placed in the document. layer for easy welding
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20230608 New group: 721905802
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7-axis based on STM32F401RCT6 The V2 version of the 3D printing motherboard has
a maximum input voltage of 24V, 5-way MOS driver, 4-way limit switch, supports MINI12864 screen, 7-axis stepper motor driver
supports 7-axis TMC2208TMC2225TMC2226 uart (please see the attached manual for details).
The silk screen on the board is up Bilibili account, please pay attention (doge).
The manual is still being improved. The hardware has optimized the uart mode of the driver. Just use the jumper cap. Others are almost the same as V1
. Specifically, the difference with V1 is to use the pink line in the schematic diagram. Box annotation
supports onboard soldering MP4462 buck module