UAV Mapper Vibration and Compass Retrofit
 

Overview

The following shows how to rotate your Pixhawk on first generation UAV Mappers so it is less likely to contact the airframe and move your compass 2 inches outboard to reduce magnetic interference from your camera.

Rotate your Pixhawk so arrow points left

Requirements

  • Updated Pixhawk Velcro
  • 15 CM servo extension
  1. Remove the left servo wire from your Pixhawk.
  2. Add a 15CM extension and plug it back in.
  3. Remove the Pixhawk Velcro hooks from the base of the electronics bay and replace with the updated Velcro as shown in the figure above.
  4. Move your airpseed sensor and I2C hub to the location shown in the figure above.
  5. Change AHRS_ORIENTATION to 6.
  6. Calibrate your Accelerometer and Compass.
  7. Verify the Pixhawk is properly responding.

Reposition Compass

Requirements

  • Wide CoroPlast compass plate
  • 30cm DF13 6-6 cable
  • Updated compass Velcro
  1. Use a small flat bade screwdriver to remove the Arm switch plug from the top of your Pixhawk.
  2. Lift the Arm switch up from the Coroplast compass plate. Carefully feed the Arm switch wire through the opening on the base of the electronics bay.
  3. Peel the Coroplast compass plate off the wing.
  4. Use CA glue and activator to glue the new Coroplast compass plate to the wing.
  5. Reinstall Arm switch.
  6. Install new compass Velcro hooks.
  7. Replace 20cm DF13 GPS cable with 30cm cable.
  8. Set compass in new location and recalibrate.