1. 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 )