The Configurable Laser Tag System (CLTS) project ran into problems. We came very close, but the power circuit failed. The System in and of itself is too.

The Configurable Laser Tag SystemFinal Presentation

Kedar HiremathJoshua Armstrong

Matthew deWetAndrew Floren

Introduction

The Configurable Laser Tag System (CLTS) project ran into problems. We came very close, but the power circuit failed.

The System in and of itself is too complex to complete within the short time span.

Nevertheless, we learned a lot, kept all of our code/documentation should anyone care to carry the torch in the future.

Scope of Presentation

1. Design Problem Statement2. Design Problem Solution3. Design Implementation4. Test and Evaluation5. Time and Cost Considerations6. Safety and Ethical Considerations7. Conclusion

Design Problem Statement

Problem Specifications Requirements Constraints

Design Problem Solution

The Game System (i.e. how to play a game)

The Game Components (central computer, pylon, tagger, pack)

Communication System between components (IR and RF)

Software (XML parser, Compiler, Linker, GUI)

Game Scripting Steps

Drag-and-Drop GUI

Abstract Syntax Tree (XML)

XML Parser

Compiler

Linker

Abstract Syntax Tree

Generated XML File

<Event name="takeDamage" entry="ifShot"> <Description/> <DynamicArgs> <Int name="killerID"/> <Int name="killerWpnDmg"/> </DynamicArgs> <CallNode name="callDie" type="SC_EVENT_RUN" value="dieEvent"> <Arg type="global" value="victimID"/> <Arg type="dynamic" value="killerID"/> </CallNode> <VarNode name="loseHP" type="SC_SETVAR" value="HP"> <Arg type="int" value="0"/> </VarNode> <IntNode name="die" type="SC_SEQUENCE" value="2"> <Arg type="node" value="loseHP"/> <Arg type="node" value="callDie"/> </IntNode> <ScriptNode name="calculateNewHP" type="SC_SUB"> <Arg type="global" value="HP"/> <Arg type="dynamic" value="killerWpnDmg"/> </ScriptNode> <VarNode name="setNewHP" type="SC_SETVAR" value="HP"> <Arg type="node" value="calculateNewHP"/> </VarNode>

Compiler

Linker

Sample ScoreboardConfigurable Laser Tag System – Game MonitorConfigurable Laser Tag System – Game Monitor

Pause Game

End Round

End Game

Game Controls

Status: In ProgressTime Remaining: 5:03

Game In Progress: Capture the Flag

Team Scores

Red:Blue:Green:

3

1

1

Pack #Team Player Kills Deaths Score

Red 1 Thomas 2 2 1 Red 2 Matt 5 1 2 Blue 3 Andrew 3 2 1 Blue 4 Josh 2 1 0 Green 5 Kedar 4 3 1 Green 6 Jacob 1 3 0

Game Statistics

Update Score

Selected Player: Andrew

Disable Player

Kill Player Modify Tagger Params

Alter Player State

Warn Player Send Message to Player

Design Implementation

PCB development slides (unforeseen problems, lie)(CULPRIT) power circuit problemsCentral Computer

› Include schematic› USB232R + X-BEE (discuss RF chip choice!)

Tagger› Include schematic› discuss LCD choice!

Pack› Receiver circuit schematic› Salvage picture?

Pylon› schematic

PCB Problems

+3 and 0 were shorted afterParts were addedVdd and Vss pins on the microcontroller switchedFootprint for everything wrong-All through-hole were wrong (Vias)-Different DC to DC converter chip-Half the size-USB size incorrect

-Switch from crystal to timer on IR

Changes to Design Choices

Switch from crystal to timer on IRSwitch from ONE-NET to X-BEE

Microcontroller: MC9S08GT60ACFBE

Why we chose this microcontroller:More RAMMore I/O pinsNeeded more timer channels

Pack: IR Sensor Array

360° Coverage4 Color LEDs

Daisy chain forHeadshot and bodyshotNot enough I/O pins

Schematic for IR sensor

Tagger

Photograph of Tagger

Nerf GunPVC pipe + lensDisplay LCD

IR Protocol (PWM)

TEAM ID PLAYER ID EVENT ID

40KHz Wave

TSOP4840IR Receiver

TSAL6100IR LED

<PrimitiveNode name=“fire" type="IR_Send"> <Arg type="global" value="teamID"/> <Arg type="global" value="playerID"/> <Arg type=“int" value=“$WEAPON_DAMAGE"/> <Arg type=“int" value=“$SPECIAL_SHOT"/></PrimitiveNode>

Example IR_Send Node

WPN DMG

Test and Evaluation

Compiler Testing IR Testing

› Hamming Code› Distance testing in different environments

RF Testing› RSSI (signal strength) in different

environments

Time and Cost Considerations

“table” of costs Estimated cost for reproduction

Safety ConsiderationsDo not shine lasers directly into eyes

Causes cancer

Recommendations

Don’t build up then tear downThe importance of choosing proper

components

Conclusion

The Configurable Laser Tag System enables the user to not only play objective-based gametypes, but to script his own games.

We were unable to complete the project due to ____

Nevertheless, we worked as hard as possible, learned a lot, and had fun.