[[111:uas_mapping:pre:microdrones|{{  :orbitgis:return_overview.png|Return to Overview - Orbit UAS}}]]
====== Determination of the Camera Pitch Angle ======

==== Preparations ====

  - Set up the drone and mount a camera.
  - Set up and switch on the md-base station + PC.
  - Open the mdCockpit Downlink decoder program.
  - Switch on the RC.
  - Switch on the drone and the camera.
  - Check the downlink connection to the md-base statation

{{:orbitgis_extensions_mi:airborn_mapping:tutorials:camera_tilt_frame01.png?nolink&800|}}
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==== Determination of the Tilt angle ====

  - Set the camera manually (shift button H + throttle) to look exactly 90° downwards.
  - Open the ‘Technical’ tab (F3) in the mdCockpit Downlink decoder.
  - Read the value of ‘Cam. P’. \\ (This is the value needed to set the CSS parameter in the waypoint editor).
  - Invert the value if you will use the Orbit GIS Flightplan Wizard software.
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==== Setting the vertical down Angle in Orbit UAS Mapping Software ====

  - Type the determined and inverted Camera Pitch Angle (= CSS parameter) in the ‘Vertical down angle’ field.
  - Complete the entire flight schedule and save it as .a ‘_WPLIST.txt’-file.

{{preferences_uav_type.png?nolink&550|}}
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==== Checking and Fine tuning ====
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**(1) Preparation**

  - Read the CSS value and the checksum in the created ‘_WPLIST.txt’-file.
  - Create in a text editor a new waypoint script: \\ CWP 1,152  \\ CSS <Cam. P value>,<cheksum> \\ TIM 50,100
  - Save the waypoint script as a ‘_WPLIST.txt’-file to the micro SD-Card \\ \\ {{:orbitgis_extensions_mi:airborn_mapping:tutorials:camera_tilt_frame03.png?nolink|}}
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** (2) Test Execution**

  - Set up the drone and mount a camera.
  - Put the micro SD-card into the Microdrone.
  - Open the mdCockpit Terminal Dialogue program.
  - Switch on the RC.
  - Switch on the drone
  - Connect the PC with the drone using the opload cable (FC-side).
  - Type in the ‘Terminal Dialogue’ the command ‘wptest’.
  - The servo goes to one of the extreme positions and then moves the mount to look downwards.

(If the camera is not looking exactly downwards, you can fine-tune and adjust the CSS parameter in the Flightplan Wizard by performing the procedure again from 'Determination of the Tilt angle' on).