A collection of datasheets for the DD21
hardware for reference.
Flight controller
SP Racing F3 OSD: https://usermanual.wiki/Document/spracingf3osdmanual.3954446379/html (USB port on a separate PCB)
SP Racing F3 Acro: https://www.docdroid.net/ZiHpNPS/f3-flight-controller-acro-6-dof-deluxe-10-dof-for-multirotor-racing-manual-latest-pdf (USB port on the same PCB)
...
Camera: Arducam 5mp 1080p OV5647 sensor
Time-of-flight
sensor VL53L0X
Raspberry Pi 3B+
Power distribution board:
PDB-XT60
Electronic Speed Controller
UBEC
Hobbywing 5V 3A UBEC