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(Compass calibration)
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=Compass calibration=
 
=Compass calibration=
# Install IMU module 35cm away from metal parts. Use 1m cable so you can move the module out of robot for calibration.
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# Install IMU module 35cm away from metal parts. Use 1m cable so you can move the module out of robot for calibration [[File:Verteileraufputzdose_2017-01-22.jpg]]. Do no use metal parts (screws etc.) within 5cm of the module, use plastic screws. Fixate everything within 5cm of the module. A small movement of a cable etc. will make the calibration useless.
[[File:Verteileraufputzdose_2017-01-22.jpg]].  
+
Do no use metal parts (screws etc.) within 5cm of the module, use plastic screws. Fixate everything within 5cm of the module. A small movement of a cable etc. will make the calibration useless.
+
 
# Move IMU out of robot and power-on robot.
 
# Move IMU out of robot and power-on robot.
# On the PC, start 'processing_mag'.
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# On the PC, start 'processing_mag'. [[File:Compass_calibration.png|600px]]
  [[File:Compass_calibration.png|600px]]
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# Ensure there is at least >1m to all metal parts in the surrouding.
 
# Ensure there is at least >1m to all metal parts in the surrouding.
 
# Rotate IMU module slowly into all directions and collect > 20,000 measurements.
 
# Rotate IMU module slowly into all directions and collect > 20,000 measurements.

Version vom 29. April 2017, 15:44 Uhr

Requirements

  • PCB 1.3 (incl. MC33926 motor drivers)
  • Arduino Due
  • IMU GY-88 (MPU6050, HMC5883L)
  • 2 perimeter coils (left, right), perimeter sender
  • motors using odometry
  • Bluetooth module

Compass calibration

  1. Install IMU module 35cm away from metal parts. Use 1m cable so you can move the module out of robot for calibration Verteileraufputzdose 2017-01-22.jpg. Do no use metal parts (screws etc.) within 5cm of the module, use plastic screws. Fixate everything within 5cm of the module. A small movement of a cable etc. will make the calibration useless.
  2. Move IMU out of robot and power-on robot.
  3. On the PC, start 'processing_mag'. Compass calibration.png
  4. Ensure there is at least >1m to all metal parts in the surrouding.
  5. Rotate IMU module slowly into all directions and collect > 20,000 measurements.
  6. Install IMU module in the robot at least 35cm away from metal parts.

User interface (for testing/development)