WM220 Flight Controller and IMU board
Function
Variants
Parts
Programming
External interfaces
Service interfaces
Board view
Schematics
Flight controller is soldered at top of ESC board within Dji Mavic. Its CPU runs Real-Time Operating System which acquires readings from all sensors and sends control signals to ESC units which control motors. Inertial Measurement Unit is the most important set of sensors, which informs the FC about the craft rotation and acceleration.
Only one version of the module is known.
| Marking | Overview |
|---|---|
| P01828.05 | The first version. |
| Marking | Amt. | Pkg. | Function | Specification |
|---|---|---|---|---|
| Atmel ATSAME70Q21 CN ARM | 1 | Flight Controller MPU | description datasheet | |
| MEAS 560702BA03 M837K | 1 | QFN-8 | MS5607-02BA03 barometer/pressure sensor, 10-1.2BAR | datasheet |
| T120 MhND | 1 | 4-lead SMD 3225 | Quartz oscillator, 12MHz | |
| PA 5fA | 1 | 3x3 UDFN/WSON | Mini Linear Regulator, DI AP7361ADJ; used to power uC and SD card slot | datasheet |
| Chips | Firmware | Description |
|---|---|---|
| ATSAME70Q21 | m0305, m0306 | Flight controller (MC) programming, loader(05) and application(06). |
| Marking | Overview |
|---|---|
| TODO |
Pad 1 is marked with white dot. Here is the top connector pinout:
| Pad | Function |
|---|---|
| 1 | PWM0 |
| 2 | PWM1 |
| 3 | PWM2 |
| 4 | PWM3 |
| 5 | LED? |
| 6 | |
| 7 | C SDA |
| 8 | VBAT |
| 9 | GND |
| 10 | 3V6 |
| 11 | 5V |
| 12 | GND |
| 13 | GND |
| 14 | C SCL |
| 15 | CAM TX |
| 16 | ESC TX |
| 17 | ESC RX |
| 18 | GPS RX |
| 19 | GPS TX |
| 20 | GND |
The bottom connector pinout:
| Pad | Function |
|---|---|
| 1 | RX VISION_SS |
| 2 | LED GREEN |
| 3 | |
| 4 | RX BAT |
| 5 | LED RED |
| 6 | |
| 7 | |
| 8 | |
| 9 | GND |
| 10 | GPS SCL |
| 11 | GPS SDA |
| 12 | TX VISION_SS |
| 13 | GND |
| 14 | |
| 15 | RX CAM |
| 16 | TX BAT |
| 17 | GND |
| 18 | |
| 19 | GND |
| 20 | |
| 21 | GND |
The following service pads exist on this board:
| Marking | Overview |
|---|---|
| TODO |
Top of a P01828.05 board:
Top of another P01828.05 board:
Bottom of the P01828.05 board:
Bottom of IMU Unit attached to the P01828.05 board:
Bottom of IMU Unit attached to another P01828.05 board:
No schematics available.