Hobbypower PX4FLOW V1.3.1 Optical Flow Smart Camera + Ultrasonic Module for PX4 PIXHAWK Flight Control PX4Flow is an optical flow smart camera. It has a native resolution of 752x480 pixels and calculates optical flow on a 4x binned and cropped area at 250 Hz (bright, outdoors), giving it a very high light sensitivy MB1043 Ultrasonic Module