The HGLRC Petrel 75 is a super compact Whoop drone with brushless motors and duct blade protectors suitable for indoor and outdoor flights.
This PDF instruction guide includes a wiring diagram, main parts pinout, and details. The second part of the guide explains BetaFlight configuration and OSD settings.
If you have any questions about the HGLRC Petrel 75 or need help, just drop a comment below.