Laser Tag Fabrication

Pinaki Ranjan Sarkar & Mustafa Shahid

April 19, 2015

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Overview

Introduction

Idea

Big Picture

Block diagram

Algorithm

Components

Construction

Procedure

Programming

Possible Modifications

Discussion

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Introduction

Laser tag is a team or individual sport or recreational activity whereplayers attempt to score points by tagging targets, typically with ahand-held infrared-emitting targeting device.

When compared to paintball, laser tag is painless because it uses nophysical projectiles.

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Idea

Sensor array

Parallel arrangement of LDR’s

Gun

Laser with different firing modes

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Big Picture

A player has different arrays on his body

Each array corresponds to different hit-points

For each hit - health is decreased, depending on which array is hit

For each fire, bullets are decremented

A reload option is available for limited use

Game ends when health = 0

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Block Diagram

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Algorithm

Sensor

Take digital input from ADC

For input greater than threshold, decrement health for correspondingarray

Game over for health== 0

Gun

When switch is pressed, fire for 2 seconds, hold for 2 seconds

Decrement bullet

When bullet=0, prompt for reload

Print - out of ammo when reload== 0

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Components

ATmega16 development board

Atmel Studio 6

Light Dependent Resistors - according to array size and number

Resistor - 10k Ω (according to number of arrays)

LASER diode - for gun

PCB perf board

Push Switch

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A toy gun

Connecting wires

Multimeter

Solder iron

Voltage source

Breadboard

Scissors/Cutter

Insulation tape

Screw-Driver

TIME

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Figure: Light Dependent Resistor

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Figure: LASER diode

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Figure: Solder LDR array

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Figure: LDR array

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Figure: Toy gun casing

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Figure: Switch

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Figure: Gun

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Figure: 16 x 2 LCD display

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Procedure

Sensor array

1 Connect LDRs on the perf board

2 Solder them in parallel

3 Connect one 10kΩ resistor (to take output across)

4 Give wire connections for VCC and Ground

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Procedure

Gun

1 Open the gun casing

2 Install the LASER diode

3 Two wires go to D Port (for controlled input)4 Three wires to switch

1 Two to VCC

2 One to Ground

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Code

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Code

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Code

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Code

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Code

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Possible Modifications

Vibrator

RecoilHit

Different firing modes (rate of fire)

AssaultSniper

Buzzer

If hitFor reloadCritical health

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Discussions

Defence Strategy Operations

Gives real-time war scenario

No wastage of bullets

Safe

Conscientia & Dhanak events

Will help generate revenue

Workshop for first years

Something new to learn

Free of charge

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