Inhaltsverzeichnis

  1. External Compass
  2. Orientation detection
    1. Orientations
    2. Changing the orientation
  3. Firmware
  4. Connection to the Navi-Ctrl
    1. Connection on the Navi-Ctrl 2.1
    2. Connection on the Navi-Ctrl 2.0
    3. Navi-Ctrl 1.x

External Compass

http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=144061

The advantage is, that this compass sensor can be placed away from magnetic disturbances.

Orientation detection

The orientation is automatically detected by the integrates ACC sensor.

http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=144330&g2_serialNumber=1

In the virtual menu you can check the current orientation.

Orientations

Six different orientations are possible.

The sensor must be placed "even" and not tilted!

  • Orientation 1-4: horizontal with different sides on top -> arrow points to the front

  • Orientation 5 & 6: vertical with the bottom side in front

{i} Front is the direction where the arrow on the FlightControl points to

Orientation 1

http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=144303

Orientation 2

http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=144307

Orientation 3

http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=144311

Orientation 4

http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=144315

Orientation 5

http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=144319

Orientation 6

http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=144323

The compass must be mounted 90° - not tilted

Changing the orientation

If you calibrate the gyros while startup, the Navi-Ctrl compares the actual mounting position with the position the sensor had at the last compass-calibration.

If the mounting orientation has changed, the NC asks for new calibration.

Firmware

The sensor is supported since 2.03i

http://forum.mikrokopter.de/topic-45372.html

If the compass is detected for the first time, the NC asks for new calibration.

The NC stores for the external compass an own calibration dataset.

If the external compass is disconnected, the old dataset is still available for the internal compass.

Connection to the Navi-Ctrl

Connection on the Navi-Ctrl 2.1

The NaviControl 2.1 has an integrated connector.

http://gallery.mikrokopter.de/main.php/v/tech/IMG_2448_001.jpg.html

The small capacitor is also integrated.

Connection on the Navi-Ctrl 2.0

http://gallery.mikrokopter.de/main.php/v/tech/ExtCompass_Connection.jpg.html

  • Red = 5V
  • Black = GND

  • Blue & white = I2C

anti-noise capacitor A small capacitor must be soldered to the pins on the Navi-Ctrl 2.0

http://gallery.mikrokopter.de/main.php?g2_view=core.DownloadItem&g2_itemId=145783

It is not possible to use the external compass for the old versions V1.x