P3 Compass board - randomlettersandnumbers/DJI-Stuff GitHub Wiki
Table of Contents
Function
Variants
Parts
Programming
External interfaces
Service interfaces
Board view
Schematics
Function
The 3D Compass module provides orientation data to the Flight Controller. It is crucial for Course Lock (headless) mode, but also takes part in stabilization in other modes. It is placed within landing gear because it needs to be separated from EM interference caused by large currents drawn from battery and sent to motors.
Variants
Only one version of the module is known.
| Marking | Overview |
|---|---|
| P01144.01 | The first version. |
| P01144.02 |
Parts
| Marking | Amt. | Pkg. | Function | Specification |
|---|---|---|---|---|
| HMC5883L | 1 | Honeywell 3-Axis Digital Compass IC | datasheet |
Programming
No programmable components exist on the compass board.
External interfaces
| Marking | Overview |
|---|---|
| 5-pin connector | Only 4 pins used; soldered ribbon cable to the ESC Center Board. |
Service interfaces
No service pads exist on this board.
Board view
Top of a P01144.01 board from P3X:
Bottom of the P01144.01 board:
Top of a P01144.02 board from P3C:
Bottom of the P01144.02 board:
Schematics
The following schematics were made by enthusiasts: