USB Virtual Reality HID - Bradley University ECE department

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Scale Factors • Problem Scale Factor Variations – Datasheet = not exact – + and – directions different – Accumulated error = drift • Solution Feedback
Offset • Problem Offset, zero-rate voltage – Causes drift from integration • Solution – Calibration routine = 1024 sample average – Adaptive zero-rate voltage – Window filter – Feedback
Page 1 and 2: USB Virtual Reality HID by Weston T
Page 3 and 4: Project Summary • Purpose: To cre
Page 5 and 6: Goals • List of project goals: -
Page 7 and 8: • Gyroscopes - Measure °/sec Ana
Page 9 and 10: Human Movement 5DOF Compass Analog
Page 11 and 12: • IMU 5 DOF Hardware - 2-axis gyr
Page 13 and 14: Hardware • Wireless ZigBee - XBee
Page 15 and 16: • Parts List Table: Parts List Eq
Page 17 and 18: Schematic • USB Board Schematic
Page 19: Noise • Problem High Frequency N
Page 23 and 24: Sensor Data • Data after calibrat
Page 25 and 26: Position - Basics • Gyroscopes me
Page 27 and 28: Code • Integration Summation - Ba
Page 29 and 30: Feedback • Integration of error
Page 31 and 32: USB • Silicon Labs C8051F340 = US
Page 33 and 34: • Problems - Direct Input USB •
Page 35 and 36: Results • Future Suggestions - Wr
Page 37 and 38: References [1] Silicon Labs, C8051F
Page 39 and 40: Test Platform • Yaw = 0° - 360°
Page 41 and 42: • ADC0 Interrupt SW Flowcharts

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