• No Sandals or open-toed shoes.   You will likely be asked to come back during one of the other APSC 150 tutorials Sept 20-25th.
• Dress appropriately.  It should not be a “messy” lab, but you may wish to wear appropriate clothing (some of the hand tools may have some residual grease on them).
• Have your designs fully specified and on hand. You will need to work from the design you created in the last lab to be able to finish this section in a timely manner

1.  Build Your Prototype

~1 hr 45 minutes

You have this amount of time to build your prototypes, test them and document your process of iteration.

Should a measurement analysis be required by the professor, this is the time that measurements will be carried out in.  Analysis can take place after the lab.

2. Decide on a Final Prototype

-15 minutes

You have this time to clean up your work stations and get together as a group of 8 to compare results.

Only one prototype can come forward to the presentation night so have a discussion and document your decisions!

Supplementary Material

Launcher Rules and Regulations

• Students must only use the materials made available to them in their designs which include (per group of 8):
  -8 elastic bands
  -1 meter of string
  -4 pieces of sheet metal
  -1 roll of electric tape
  -pop rivets and nuts and bolts
  -2 cardboard fast food style “fries” containers
  – ~ 20cm of ABS piping and tubing for joints and hinges
  -2 corks (the projectiles to be used are cork halves, so each group will have 4)
• The launcher arm must have a mechanism for holding the projectile in a “ready to fire” state without being held by a student. This can be in the form of a quick release, a trigger, a latch etc. (This is one of the most important components to design well)
• The launcher arm must be attached to the robot base when throwing.
• The launcher arm must be able to fire multiple times without breaking.
• The robot cannot be held when throwing.  A maximum of one hand can be used to “fire” the projectile.
• If a counter-weight is needed, any material that will not in any other way enhance the design can be used.

• For each elastic added after the first, 2 feet will be taken off of the final measurement.
• If using an electric firing mechanism (no physical touch of the robot when firing), 3 feet will be added to the final measurement.
• Only projectile distance travelled through the air will count in distance measurement.
• The shot for accuracy will be announced on the final day, so it will be necessary to know how to properly adjust your robots for given distances before hand.