This is my first venture into APM:Plane (I’ve done years of Copter but this is my first plane). Using a Pixhawk.
I’ve just connected up the digital (I2C) Pixhawk airspeed sensor and it works fine (if I blow towards the probe it increases in airspeed) however it’s not calibrated correctly or something else isn’t right. It reads about 12m/s in still air.
I’ve read the wiki about “Calibrating an Airspeed Sensor”. I’ll do that once the plane is ready to fly. In the meanwhile, is there a way to do a basic calibration on the bench? At least to get it to read zero in still air.
This is my first venture into APM:Plane (I’ve done years of Copter but this is my first plane). Using a Pixhawk.
I’ve just connected up the digital (I2C) Pixhawk airspeed sensor and it works fine (if I blow towards the probe it increases in airspeed) however it’s not calibrated correctly or something else isn’t right. It reads about 12m/s in still air.
I’ve read the wiki about “Calibrating an Airspeed Sensor”. I’ll do that once the plane is ready to fly. In the meanwhile, is there a way to do a basic calibration on the bench? At least to get it to read zero in still air.
Thanks![/quote]
Do the following from the wiki… Note that you’ll never get 0 on the bench but you’ll get a < 4 figure that will bounce around.
Calibration
The airspeed sensor reading is automatically zeroed by the APM during initialisation, so it is good practice during windy conditions to place a loose fitting cover over the pitot tube that shields the front hole and the four small side holes from the wind. This cover should be fitted prior to power on and removed before flight. If you forget to do this, you can always place the cover and repeat the airspeed auto-zero using the Mission Planners PREFLIGHT_CALIBRATE => Do Action.