COOPER STRIKE
ME155 Design and prototyping
FRAME
Managed by Dachi Tan
Dimensions: 4 ½' x 2' x 1 ½' . Nominal thickness ½''. Designs may change to accomodate alterations in other subsystem design.
OFFENSE
Managed by Alecsey Kovalenko
A semi-automatic laser gun is used to score points by firing it at the targets on the opponent’s side of the field. The gun is composed of a prop pistol frame that was acquired from a CAD sharing website, hollowed out in SolidWorks, and finally 3D printed. The printed pistol frame houses a laser, an LED light, and a pushbutton on the grip, with the wiring for all of these components running through the hollowed out portion of the frame and out the bottom of the grip. The laser gun is mounted onto the frame in a manner such that the barrel of the pistol cannot be pointed outside of the play area. When a player presses the pushbutton, the LED light activates for a short period of time and the laser is fired after this period, giving the opponent a decent time frame within which he or she can react.
DEFENSE
Managed by Alecsey Kovalenko
A blowgun is attached to the frame via a shaft collar and a ball bearing in order to allow linear motion. A multi-outlet air manifold will be connected to the blowgun using a nipple. The openings on the manifold will face upward and will be located inside the play area. A large number of packing peanuts will be placed above the manifold so that pressing the trigger of the blowgun will propel multiple packing peanuts into the air, thereby blocking the opponent’s vision of the targets that he or she needs to hit.
MOUNTING
Managed by Hou Chong Chan
The blowgun will be mounted onto the frame via linear bearings and shaft. The blowgun will be connected to a 400 mm metal rod via an aluminum housing attached to its barrel and a linear bearing. The linear bearing, attached to the metal rod, will enable it to slide side to side. The rod will then be clamped onto the frame using acrylic brackets.
The laser gun will be attached to the frame by wrapping a tether around the handle wrapping the other end onto an L-Bracket around the frame.
WINDOW DESIGN
Managed by Hou Chong Chan
Polyethylene film was used to cover the sides of the frame for cost-effectiveness. Thumbtacks was used to attach the two pieces together. Acrylic sheets are used for the player's viewing window and it mounted via bolts and nuts.
ELECTRONICS
Managed by Garo Bedonian
The electronics component controls the laser gun firing, pneumatic solenoid valve controlling the blowgun fire rate, and the scoring/winning displays. The targets consist of photocells that act as buttons in parallel. This system involves soldering, cable management, microcontroller programming, and power management.
Also involves the design of the game, as timings of multiple components are essential to game balance and fun.
