User:Jshin7059/enes100/rubberbandgun

Write problem/project Goal
What is your wording of the overall problem/project goal?

My First Task
What are you going to do for the team this first weekend?

Summary of actual work over first weekend
How is what you did different than what you planned?

Week1 Narrative
Tell a detailed story describing what you did for your team over the weekend.

My Second Task
Record what you are planning on doing for the team during the second weekend.

Summary of actual work over second weekend
A prototype for the automated rubberband gun was constructed. The design loosely follows the previous group's "machine gun" design.

Week2 Narrative
The previous group's gun was automated, using a power drill and a stretch of yarn to "unwrap" and shoot multiple rubber bands. We wanted to improve on this design and attach a electric motor to a triggering mechanism to turn the spool. We approximately recreated the previous gun but using more care to reduce weight, increase strength, increase aesthetics, and user-friendliness. The gun was made, with all the dimensions of pieces of wood being recorded.

My Third task
I will try to design an automated, motorized, rubber band firing system. I will bring to class, on Thursday, couple different sized motors and batteries and set up the string, rubber bands, and the motor.

Summary of actual work over third weekend
The plan was to power the automated rubberband bun using a small stripped out motor and controls. What I actually ended up doing was finding out the motor was not strong enough to turn the spool of yarn. It did not have nearly enough torque. The next idea was to explore using a small hand-held drill to turn the spool and I ended up working with a drill instead.

Week3 Narrative
My plan was to try and power the automated firing system using a small motor, such as one found in small-medium sized remote controlled cars. I wanted to find out the differing efficacies of different motors, i.e. different sizes, weights, amperages, voltages. I needed to find out the strength of the motor, since the motor needed to have enough torque to turn the drill bit (which turns the spool that the firing string winds upon). As I began to work on this, I soon began to realize that the small motor I have would not have enough torque to turn the pool or string. The issue was that the small motor could revolve very fast but could not put out much power. At this point, I gave up on the idea of using a small motor stripped from a remote controlled car, because that motor would not have nearly enough torque and would not be able to turn the spool. My partner, had a good idea and wanted to use a small cordless hand drill to power the rubberband gun. I borrowed a cordless drill from the instructor. The drill was powerful enough, but was running low on power. I could not located a matching charger for the drill, as it lacked documentation. The group will be using another drill assigned to my partner since that drill is charged.

My Fourth task
I am going to reconstruct the "spool", the barrel that the firing string/yarn winds on. This is because the barrel wobbles when spinning, creating friction and a not-smooth loading/unloading operation. I am going to try using a thicker string to see how that helps with firing the rubber bands. I am also going to further sand the dowels to make firing smoother. Time permitting, I will move the barrel higher up to improve smooth firing, add a scope, and paint the exterior for aesthetics.

I am also going to use the "guts" of the power drill to try and find the proper charger for the whole, intact drill.

Summary of actual work over fourth weekend
How is what you did different than what you planned?

Week4 Narrative
Tell a detailed story describing what you did for your team over the weekend.

The guts of the hand drill

Complete Team Page
Fill out the Team Form (should have already copied the form, created the team page, linked to it and started filling it out).