Hi,
Not sure if a arduino Uno can output 4 accurate PWM signals at same time.
Try the config file attached.
cc3d_settings_bob.uavAccording to the Input configuration you need to connect :
Throttle to first signal wire
Roll to second signal wire
Pitch to third signal wire
Yaw to the fifth signal wire
Be sure the outputs are wired correctly, according to this picture.
Output1 go to the NW motor, etc..
Calibrate neutrals in Output tab, using the "test outputs" checkbox.
At end when all is fine you need to set the Input > Arming Settings to Always Armed.