Face the camera to ground and stick the module to the bottom of aircraft by 3M sticker or soft sticker (with slightly vibration isolation). *DO NOT touch the electronic components on the PCB. *The video below shows PX4 holding position using the Ark Flow sensor for velocity estimation in Position Mode: The image below shows an optical flow setup with a separate flow sensor (PX4Flow) and distance sensor (Lidar-Lite): An Optical Flow setup requires a downward facing camera and a downward. Flying an FPV drone in Position Hold and Altitude Hold modes can be significantly improved with the addition of Optical Flow and Sonar (rangefinder) sensors. These sensors help maintain a stable hover by providing precise data about the drone's position and altitude. In this tutorial, I'll guide. This article describes how to setup the PX4FLOW (Optical Flow) Sensor which can be used for Non-GPS navigation. The PX4FLOW is not yet supported in Plane or Rover. A LiDAR component, an optical flow camera and a 6D IMU (ICM20602) are integrated in the Here FLOW. Instead of relying on GPS, this sensor tracks visual features on the surface beneath the drone and reports how those features move between frames.
