Materials From Parallax:
(Note: Pictures and Description from Parallax.com)
SRF04 Ultrasonic range finder
Object can be found at: http://www.parallax.com/detail.asp?product_id=28015
DESCRIPTION: The SRF04 works by transmitting an ultrasonic (well above human hearing range) pulse and measuring the time it takes to "hear" the pulse echo. Output from the SRF04 is in the form of a variable-width pulse that corresponds to the distance to the target. From a BASIC Stamp module's perspective it's a snap to interface with this device.
Price: $36.00
Stock Number:28015
Use: Distance measurement of target
IR
Buddy
Object can be found at: http://www.parallax.com/detail.asp?product_id=28016
Description:
The IR Buddy has onboard IR transmit and receive hardware, as well as a
communications controller that buffers incoming signals and manages data
exchange with the BASIC Stamp.
Price:$39.00
Stock Number:
28016
Use: To
send/receive signals between target
and robot using infrared signals
Parallax (Futaba) Continuous Rotation Servo(2)
Object can be found at:http://www.parallax.com/detail.asp?product_id=900-00008
Description: The Parallax Continuous Rotation Servo is a Futaba S148 servo. It's recommended for robotics projects and includes an adjustable potentiometer to center the servo. Servos may be controlled directly from a BASIC Stamp I/O pin by using the PULSOUT command. Servo has been modified for continuous rotation.
Price: $9.95
Stock Number: 900-00008
Use: For turning the sensor and triggering the cannon button.
Boe-Bot Robot Kit - USB Version
Object can be found at: http://www.parallax.com/detail.asp?product_id=28832
Description: The ever-popular Boe-Bot(R) Full Kit is now available with a USB-compatible Board of Education (BOE) - at no additional cost to the consumer! Programming the BASIC Stamp via USB is an elegant solution for laptops and newer PCs which have no serial ports (no more adapters required!).
Price: $199.00
Stock Number: 28832
Use: The basic body and brain of the robot.
Other Materials:
Plastic Straw
Object can be found at: Your Local Fast-food Restaurant!
Price: Free!
Use: Barrel
for launcher
Iron Nail
(Slightly less than the diameter of the tube, so that it is able to fit in
the tube)
Object
can be found at: Any Local Hardware store, or just pull out out from
some furniture that you don't need any more.
Price: About $0.10
Use:
Projectile
Magnetic Wire 22 gauge
(~50ft)
Object
can be found at: Radioshack Radio Shack part number- 278-1345
Price:
$4.89
Use: Electromagnetic inducers 
Disposable Camera(With
Flash)
(Note: A Fuji Disposable camera was
used for this project, but any disposable camera with a flash will
work)
Object can be found
at: http://www.bizrate.com/marketplace/product_info/overview/index__cat_id--197,prod_id--6289292.html
Price:$6-13
Use:
Store energy so that it may be released to trigger the
cannon
Extra Switches(2):
(Note: These switches were not used, but would be very helpful
since the cannon deals with large voltages)
Object
can be found at: Radioshack Radio
Shack part number 275-016
Price:$2.69
Use: To charge and trigger
the cannon