For reference … Besides the propeller screws, 4 kind of screws when disassembing the viper, depending on size, end point, and heads (with/without integrated washer)
From left to right:
- (3) screws holding the Ardupilot FC board.
- (2) screws holding the Sonix video board.
- (1) screw holding the (black) JST battery connector.
- (12) screws for the rest.
