CenSSIS/NE-LSAMP REU

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CenSSIS/NE-LSAMP REU
LabVIEW control of the Sport232
Interface Sara Grier - Northeastern
University Advisor Professor Michael Ruane -
Boston University
Disadvantages of Sport232
Advantages of Sport232
Objectives

• Implement an image-driven feedback system
• Replace more expensive electronics with Sport232
• Create LabVIEW imaging and interface controls
• Gain experience in electronics

• Can only send out 5 volts
• Does not have analog output port
• Must include 0.5s time delay between actions
• of continuous data
• Duty Cycles can only be set in 1 intervals

• Less expensive COTS
• Pulse Width Modulator pin
• Straight or Null modem cable
• 5 ports/11 analog input pins
• Includes Stepper Motor Controller

Capturing Image
LabVIEW

• National Instruments
• Used by 90-95 of
• fortune 500 companies
• Graphical Programming
• Language

Configuration of Ports
Pulse Width Modulation
HS-55 Servo

• Wiring
• Black ground
• Red power
• Yellow - signal
• Can turn in 3 specific degree points
• 10 degrees left
• 15 degrees center
• 20 degrees - right

Square Wave
Duty Cycle

• Represented by a square wave
• Duty cycle describes whether
• the pulse is on or off

Frustrations
Future Steps
Jumper Settings

• Obtaining a relay
• Generalizing the actuator
• Integrate with existing LabVIEW controller

• Jumper Settings
• RS-232
• DB9
• Loop-back Test
• Swapping boards
• Call the vendor

CenSSIS is a National Science Foundation
Engineering Research Center supported in part by
the Engineering Research Centers Program of the
National Science Foundation (Award EEC-9986821)