When using the Flow Deck, the Crazyflie firmware needs to be updated to the new version.
Please install the Flow Deck when Crazyflie 2. X has turned off the power, and pay attention to the arrow prompts on the board to avoid installing it in the reverse direction.
The higher the flight altitude of the unmanned aerial vehicle (UAV), the
larger the measurement range: When the UAV flies to objects such as close-range walls, the data fed back by the Flow Deck may be the distance position from the wall rather than the distance position from the ground: