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Projects 1: Project Kickoff Meeting
Project: Design an Interface between a Robot and a LTU Laptop
Group members:
Colin BlackSteve Holcomb
Objective
• Design and implement an interface between a robot and a LTU laptop
Target Goals:
• Robot should be able to traverse forwards and backwards with the capability to turn
• Robot should be able to travel at two to three speeds
• Interface should be easily available for use in third-party programs– i.e. writing maze-traversal programs
Design Sub-Systems
LaptopInterface
SensorSystem
SteeringSystem
DriveSystem
PowerSystem
Power Sub-System
• Capable of powering interface and robot– Laptop runs on batteries
• Power sources under consideration:– Batteries
• Heavy• Limited functional time
– 110V connection to maze exterior• Limits size of maze• Requires addition of transformer on robot
Drive Sub-System
• A single drive wheel located at the rear of
the robot
• Variable speed bi-directional motor
• Controlled through interface board
• Tachometer connected to drive wheel for
distance/speed reporting to interface
Steering Sub-System
• Based on standard Rack and Pinion design
• Single servo/motor to control steering angle
• Angle controlled through interface board
Sensor systems
• Initial sensor type: touch
• Sensor contact causes immediate event/interrupt; drive halted
• Expansion of system possible to include other sensor types
Laptop Interface
• Use of Handyboard to relay commands to drive/steering sub-systems and contact data from sensor sub-system
• Laptop interfaces to Handyboard through Parallel/Serial port
• Interface to third-party programs through binary API or compile-time headers– Knowledge of Windows 2k/XP Device Drivers
required
Timeline
• Parts ordered by 11/30• Drive system/chassis built 02/01• Steering system built 02/15• Sensor/Interface built 03/01• Device Drivers/Headers written 03/08• Final testing 03/29• (Competition date - RoboFest)04/27
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