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