B station video: https://www.bilibili.com/video/BV1XR4y1475k
Version 2.0 has modified the circuit components and optimized the battery interface. The memory card detection mechanism is also normal. The charging detection is currently abnormal. The code needs to be modified. The circuit may be modified in the future. Generally speaking, it is sufficient for now. . Other parts of the hardware are all normal and have been tested. It is recommended that you go to Taobao to buy the module and blow it off for the serial port module. The same is true for the mpu6050.
Strictly speaking, this is the third version. In order for the SH1.0 interface of the battery interface to be inserted, the positions of the two capacitors have been specially moved, where they will not block the power plug and will not affect the insertion of the memory card.
The shell file is also uploaded.
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