JM Flight Control

ICM-SDA:PB7 ICM-SCL:PB6 INT1:PB0
BMP-SCL:PC4 BMP-SDA:PC5
TX:PA9 RX:PA10
D0:PC8 D1:PC9 D2:PC10 D3:PC11 CLK:PC12 CMD:PD2 SLEEP
:PA4 AT:PA5
DEVICE_TXD:PB10 DEVICE_RXD:PB11
OTHER_EN:PA6 CH9141_EN:PA7 OFFCIRCLE_EN:PB1
BEEP:PB5
Improvements of the second generation compared to the previous generation: 1. A separate Bluetooth RF section has been allocated to ensure normal Bluetooth operation. 2. The traces under the attitude sensor have been removed (to prevent interference). 3. Through holes have been drilled on the bottom of some chip packages for easier soldering. 4. The design of the communication selector has been updated, and MOSFET on/off control has been directly used. 5. The packaging has been standardized to alleviate the problem of multiple packages and the same components in different packages.
 
Summary: All design contents have passed testing and can be used. Issues: 1. The Bluetooth module seems useless; there's no good way to utilize it for testing. 2. The OLED screen is also cumbersome. 3. The originally planned serial port selector now seems to affect data acquisition and updates; although the design is good, it's not very meaningful. 4. The SD card is not needed for now. 5. Without a magnetometer, it's difficult to obtain an accurate yaw angle using only the gyroscope's integration.