We had two continuous climb experiences when using Optical Flow Sensors + Rangefinders.
When we disable the rangefinder while keeping the flow sensor on, the barometer is not disabled, under alt-hold, it climbs continuously. Both cases happened in the same scenario.
Case 1, we used Hex HereFlow Optical Flow Sensor + LightWare SF20 / LW20
Case 2, we used PX4FLOW Optical Flow Camera Board without sonar + LightWare SF20 / LW20
However, we can Off the flow sensor and only enable the rangefinder. we do not experience uncontrolled climb.
It concluded to us that once the flow sensor is enabled, we cannot disable the range finder including the onboard rangefinder. Can someone confirm?
It is confirmed that a height sensor MUST be installed and here.
therefore, the document must update to include (To use the onboard lidar (not recommended):) or change to MUST (should also be attached to the vehicle). And I am not the only one and this has happened for many years.
FW: 4.0.7
FCU: CubeOrange
propeller size: 9 inch
weight: 2.0Kg