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Hands-Free Camera Controller
Jeffrey Gould
Overview
• Introduction– Background
– Design Criteria
• Components• Sensor Mapping• Problems• Demonstration• Future Work
Introduction: Background
Design Criteria
• Head Mounted Display• Self Contained• Expedient
Components
• Controller• Servos• Sensors
– Compass
– Accelerometer
Sensor Mapping
(3599,0)
2550
127
(2700)
(3300)
Sensor Mapping
• Compass Reading • Servo Command
Sensor Mapping
• Compass Reading
• Reading – Reference2250-1800=450
• Servo Command
• Scaled Deviation(450)*255/1800+127=190
Sensor Mapping
• Compass Reading
• Reading – Reference2250-1800=450
• Servo Command
• Scaled Deviation(450)*255/1800+127=190
2550
127 (2250)
(1800)
190
Problems
• Mapping Problems• Software Problems• Hardware Problems
Mapping Problems
• Pass Through North
• Rotate Beyond Horizon
2550
1270,3599
(800)
64
Software Problem(s)
• PROBLEM
Programs Limited to 1kByte Size
• SOLUTION
Reduced Complexity of Mapping Algorithm
Hardware Problem(s)
• PROBLEM
Sensor Limitation
• SOLUTION
Prototype Operates in Two Separate Modes
Demonstration
Future Work
• Do Research• Change Sensor• Change Microcontroller• Go Wireless• Add Functionality
Alternative Control Method
• Used with monitor, not HUD
• A “Dead-Band” zone is established
• Camera stays fixed if head is oriented in Dead-Band
• Camera pans if head moves out of Dead-Band
Conclusion
• Project Has Captured My Interest
• Has Worthwhile Robotics Application
• Should Conduct Research Before Proceeding