Objective: 

Design and build a device that launches a marshmallow at a target with accuracy and precision.

Design Constraints:

Must fit within a 2 ft. cube. Total weight under 30 lbs. Budget limit: $30.

Operational Requirements:

Remote firing mechanism (activated from ≥1 ft. away, from the side)

No combustion or high-pressure pneumatic systems (>5 PSI)

Safe to load and operate

Launch Conditions:

Launcher must touch the starting line and sit at floor level

Entire system must remain behind the line during launch

No fastening to the floor; friction-based stabilization only

Electrical Limits:

Voltage must not exceed 24V DC.

Results:

The projectile was unable to reach the desired range and hit a target consistently. This was primarily due to the type of elastic used. 

The trigger functioned well after some modification. Due to time limitations, we could not reprint the trigger.  We added a shim on the cam to reduce the pressure required for forward and backward rotation.

My most significant contribution to the project was completing the 2D and 3D modelling. I also partnered to make the launcher.