Laser%20Shoot-Out%20Game

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Laser Shoot-Out Game

• By Steven Noto and Laura Miller
• Advisor Steven Gutschlag
• April 4, 2000

Senior Project Status Report 2
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Presentation Outline

• Project Overview
• Project Progress
• Laser System Overview
• Review of Completed Work
• Software
• Hardware
• Schedule
• Conclusion

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Block Diagram

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Project Progress

• Work almost complete on Weapon hardware and
  software
• Laser transmission and reception system has taken
  longer than expected

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Laser Transmission System
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Software Progress I

• Weapon Software Objectives
• Laser Interface
• Serially send out data to be transmitted
• Serially receive data from laser receiver
• User Interface
• Trigger, Reset, etc.
• RF Interface

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Software Progress II

• Weapon Software Progress
• Originally written in C and Assembly
• Many problems integrating the two languages
• Transferred to all C code
• All assembly problems solved with only a small
  reduction in speed

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Software Progress III

• Weapon Software Status
• User Interface
• All buttons connected and tested
• Laser Interface
• Software components of transmission simulate
  correctly
• RF Interface
• Serial interface will be used instead

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Future Software Milestones

• Making sure the transmission software works with
  the hardware
• Using the serial interface
• Moving on to Display Board and Central Controller
  software

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Weapon

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Hardware Accomplishments

• Reduced noise in laser receiver circuit
• Added decoupling capacitors
• Tried different oscilloscopes and different
  settings
• Tried different feedback resistors

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Hardware Accomplishments

• Amplifier stage is operational
• Designed and built
• Problems with instabilities - Added Capacitors in
  parallel with feedback resistor
• Problems with the first stage output voltage
  level saturating the second stage

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Current Laser Receiver Output
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Future Hardware Milestones

• Laser receiver amplification
• Change the gain on the current amplifier circuit
• OOK detection circuit
• Chip is already selected
• OOK circuit
• An oscillator and switch

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Original Spring Schedule

• Week Laura Steven
• 1 Design and optimize laser receiver Code
  weapon software
• 2 Design and optimize laser receiver Code
  weapon software
• 3 Design and optimize laser receiver Code
  weapon - to - display Software
• 4 Integrate laser receiver and weapon
  software
• 5 Integrate laser receiver and weapon
  software
• 6 Design C.C. electronics Code C.C. -
  to - display software
• 7a Design display board electronics Code
  C.C. - to - display software
• 7b Mid-term demonstration
• 8 Design display board electronics
  Code C.C. - to - display software
• 9 Design display board electronics
  Code display - to - user software
• 10 Integrate C.C. hardware and software
• 11 Integrate display hardware and
  software
• 12 Integrate Subsystems
• 13 Integrate Subsystems
• 14 Presentation

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Actual Spring Schedule
Week Laura Steven 1 Reviewed
Specs for Photo Diode, Learn to use Keil
PK51 Package Looked at Current to voltage
Converter 2 Set up simulation for I to V
converter Learn to use Keil PK51
Package 3 Finished simulations for both I to
Begin coding weapon software V converters
and started building circuits 4 Finish building
circuits and test them Interface weapon software
and laser systems
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Actual Spring Schedule
Week Laura Steven 5 Trouble
shooting laser receiver Analyzing timing
for weapon software, circuit and noise
reduction running MMT test programs 6 Recorded
frequency response Coding and simulating
assembly of receiver circuit, worked on code
for laser interface noise problem 7 Started
amplifier design, Incorporating assembly and C,
finished testing receiver circuit running test
programs on MMT peripherals 8
Designed and built amplifier Incorporating
assembly and C circuit 9 Finished wiring
amplify circuits, Switching all weapon software
to C Fixed several problems with them code,
simulating weapon code
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Conclusion

• Software - Working on weapon software
• Hardware - Working on laser receiver for the
  weapon
• Many challenges to overcome to finish weapon

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Questions?