- Lower the position of PDB as well as Pixhawk; Centre the Pixhawk
- Make Pixhawk closer to the centre of rotation, for better motion measurement
- Solder wires onto PDB, instead of sockets. Hence the wiring between PDB and ESCs are loosen, giving more flexible wiring arrangement. - Replace soft shock-absorbing foam to thinner double-sided tape
- Avoid possible over-damping, which may create more low frequency oscilation
- Make sure Pixhawk is not tilted under pressure / tension, such as wires, which can give erratic attitude infomation - Put GPS Mount on a more rigid mount
- Made battery holder
- Battery is slided into the holder, instead of hanging below. Decrease possibility of sudden shift of battery position. - Use nylon lock nuts, instead of cone
- Reduce possibilities of loosen nuts over the propellers. - Glue the motor mount onto the arms
- Prevent motor mount from sliding to sideways - Redesign of propeller guards
- Give more protection from the side
Some features added
- 5.8Ghz FPV system, with laptop as monitor
- Servo box
