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PIE Project & Homework Assignments

Quarter 4 Assignments

This Electronics Project is Worth 30% of Your Q4 Grade

• Due on Fri Jun 11 at beginning of class
• Due on Thu Jun 10 at During of class
• Due on Wed Jun 9 at beginning of class

• Due on Tue Jun 8 at beginning of class Create a printed circuit board in EAGLE

1. Switch to the printed circuit board view using "file" "switch to board" (or click on the switch view button). Review your initial PCB layout with Mr. Rhine to make sure that you are using all the right components and that the wiring is correct! If some of the leads on compents have no yellow wires, you should double-check your wiring in the schematic.

2. Now drag all of your components into the rectangular box.

• is is best to line up the components in such a way to minimize tangling of wires.
• As you postition and re-position your components, frequently use the "rats nest" tool near the lower left to "straighten out your wiring"
• In general, it is best to lay out your components in tsame relative location as you have them on your circuit diagram - notice the difference between the disorganized pcb layout on the right and the logically organized layout on the right - the one one the right is organized in the same order as the schematic (although it is rotated 90 degrees counterclockwise from the schamatic)

3. Once you have everything positioned nicely, it is time to run the "Autorouter" which is the button in the lower left corner that has red and blue cross-hatched lines

• Set the routing grid to 25 mils
• Set layer 1 (top) to N/A because we are making single-sided boards, with copper only on the bottom side (layer 16). Brian you want to do just the opposite if you are creating a surface-mounted version.
• Layer 16 (bottom) should be a - or a /
• Now click "OK" button and watch the program try to find a way to connect all of the copper wires! If all goes well, you will see a meassage at teh bottom that says "100% complete"
• If you do not route to 100% completion, make a note of which wires are not routing, then type "ripup;" and hit the enter key to rip up all the blue copper wires; move components around and use the rats nest tool to straighten out your wiring, then re-run the autorouter.

4. Review your PCB layout with Mr. Rhine to make sure that you are using all the right components and that the wiring is correct!

• Due on Mon Jun 7 at beginning of class Create a circuit diagram in EAGLE...you should have your circuit done as homework over the weekend and bring in on a thumb drive on Monday am. I have step by step instructions with videos here
  1. Start EAGLE and right click on "libraries" and click on "use all"
  2. Now create a new schematic by clicking "file" then "new" then "schematic"
  3. Now add all of your parts using the "add" tool and using the search tool in the library
  4. After all the parts are added, use the "name" and "value" tool to change the names and values to matcher your schematic
  5. Now use the "wire" tool to wire your components per your diagram
  6. Finally, use the "show" (eyeball) to check your wiring to make sure it is done correctly - this is the most important step as it identifies wiring errors!!

• Final series of videos we watched and discussed in class...Quiz on Fri May 28 and be prepared to show your notes for credit
  • DARPA Grand Challenge on NOVA (2nd try!)
  • TED Lecture by Burt Rutan
  • TED Lecture by Shai Agassi
• Hw due Wednesday 5/19 (both classes)
  • Read the article "Climate strategy on a road to nowhere" by Bjorn Lomborg (handed out in class). As you recall, Dr. Lombord was the blond man in the "Electric Car Dreams" video who disagreed with the methodology and cost of Shai Agassi's plan for an electric car network. Lomborg desribes himself as a "skeptical environmentalist," although his detractors use terms that aren't as kind. After reading his recent article, write two paragraphs about his article and how it fits in with the videos we've watched and discussed in class.
• Hw due Tuesday 5/18 (both classes)
  • Analyze the two Energy Information Administration graphs handed out in class (figures 1.0 and 2.0 in this attachment). After you understand the graphs and appreciate the meaning of this significant data, choose 5 interesting pieces of data from each graph (10 data items). For each interesting data point you chose, state the meaning of the data in one sentence, then write a second sentence to describe why this data surprised you or why you found it to be so significant.

Paul MacCready's Helios Solar-Powered Wing

Due on on day video shown in class starting Tue 5/4

• Scientific American Frontiers with Alan Alda: "Flying Free" (7 short segments originally aired in Sep 2001). Some very interesting flying machines designed by Paul MacCready and a great example of the engineering design process.
• Scientific American Frontiers with Alan Alda: "Future Car". Paul MacCready's in this episode, too! Our government and companies are pouring more and more resources into alternative energy vehicles and power generation. This would be an interesting career area to explore, and you can approach this field from many dieeferent perspectives (chemisty, physics, biology, political science, and many different fields of engineering).
• Scientific American Frontiers with Alan Alda: "Hydrogen Hopes" (there is overlap with the previous video...watch the second half of the first segment Re: Stan Ovshinsky, skip the second segment, and watch the third segment).
• NOVA scienceNOW: Algea-based biofuel
• Nova: Car of the Future (video here)
• PBS NOW: Electric Car Dreams - building electric car networks in Denmark and Israel.
• Nissan Leaf test drive article - 100 miles on a charge, $25,000 car
• Tesla sets world record distance
• 60 Minutes: Bloom Energy's Bloom Box
• Bill Gates investing in small nuclear power plants
• More recent info about new nuclear power plants
• Nuclear Power Celebrated on Earth Day?

September 11, 2001

Due on Fri 5/7 for both classes

• Review your notes from the 3 skyscraper videos seen in class (if you were absent, you are responsible for watching the videos and showing me notes)
  • PBS Building Big: Skyscrapers (2000) (video available for loan in class)
  • Nova: Why the Towers Fell (Apr 30, 2002)
  • 60 Minutes: Ground Zero (Feb 21, 2010)
• Write a two (2) page essay about the videos you saw. Pick a theme for your essay, use your notes to write it and support your arguments. Theme and opening paragraph is due on Wed, 5/5/2010 (both classes). Use one inch margins, times new roman 12 point font, single spaced, double space between paragraphs. Staple a cover page on top of your essay. DO NOT even think about printing this essay in class. -10% per day late charge. Zero if plagiarized. Counts as a quiz grade.

Practice Quiz Problems

• Pd 2: Note that Pd 5A improved upon the problems! We added some engergy-reated calculations.
• Click here to for sample problems.

Due on Mon 3/22 for Pd 2, Tues 3/23 for Pd 5B - I will collect and grade this assignment

• Here is the assignment from last week with all of the research filled in. Neatly go through and solve the problems I didn't answer. For those of you who already did this, you may rely on your old answers for a grade, but I would highly recommend that you re-work them (if you were wrong the first time but right the second, I'll only count your correct answer!). This assignment will be graded.
• Geosynchronous Earth Orbit (GEO) satellite problems: Geosynchronous (aka geostationary) satellites orbits are "fixed" over one spot on the earth (see figure to right and read this web page). Here is a link to a simulation on youtube, but it is not drawn to scale. In contrast, here is a simulation of a low-earth orbit (LEO). It turns out that geosynchronous orbits only exist on the equatorial plane extended into space (unless you have a lot of extra fuel to spare). Three questions for your to answer:
  1. Calculate (derive) the orbital altitude for a geosynchronous orbit. In other words, you need to find the radius at which the force due to gravity (F_g = G*m₁*m₂/r²) exactly counteracts the force due to centripetal acceleration (F_c = m*a_c = m*V_T²/r = m*ω²*r. Remember, you KNOW how fast the earth rotates (and your GEO satellite), just look at your watch!! You can divide out the common mass of your satellite from both sides of the equation. Check your answer (look up solution on internet). If you are wrong, figure out your error and correct it.
  1. Why must the orbit be over a point on the equator? Why can't one be put into orbit over Boston? Note that a student asks the same question at the bottom of the simulation on youtube. To answer the question, start with a lager diagram of the earth with a representation of a satellite in GEO. Draw in vectors representing all forces acting on the satellite (look back to problem 1). Now draw a "Boston Synchronous Orbit" on the same diagram and show the forces acting on the satellite. This diagram should answer your question.

• Due on Mon 3/15 for both classes - I will collect and grade this assignment
• Question related to energy and centripetal force
• Due on Wed 3/10 for Pd 2, Thu 3/11 for Pd 5A
  • Another Energy problem using springs
  • Make a large diagram with associated formulas and vectors based on the contents of Holt section 7.2 - 7.3
• Due on Tue 3/9 for Pd 2, Thu 3/11 for Pd 5A
  • Energy problem using spring
• Due on Mon 3/8 for Pd 2, Tue 3/9 for Pd 5A
  • Read/Notes on Chapter 7
• Due on Mon 3/8 for Pd 2, Tue 3/9 for Pd 5A
  • Revisit the homework you completed for the ball rolling off the table. You used free fall equations to create a table of t, x, y values which you used to plot the path of the ball.
  • Using the mass of the ball you used in the lab experiment, expand this table of values to include PE, KE, and TE calculations as demonstrated in class. Neatly create a table as we did in class and fill it in (calculate). Columns headings should include related units and equations for the following values: t, x, y, m, height, PE, V, KE, TE.
  • I recommend you create this table in Excel using formulas, but you may also use pencil/paper. You can also create this entire table on a TI if you are clever!!
• Due on Wed 2/24 for both classes
  • Lab report for ball rolling off table experiment.
  • You must turn in your completed homework (due on 2/11) before you may start experimenting.
  • Period 2: you have class time on 2/11 and 2/12 to complete your experiment.
  • Period 5A: you have 1/2 class on 2/11 and 1/2 class on 2/22 to complete your experiment.

• In class Assignment to work on in class on Monday, 2/22/2010, and Due on Tues 2/23 for BOTH classes

• Due on Mon 2/22 for both classes
  • Problems from Holt Physics Book: 3.3 #34, 37, 38, 40, 44, 69.
  • One page per problem please (3 pp total). Be sure to draw a diagram and neatly show all work as demonstrated in class.
• Due on Fri 2/12 for Pd 2, Mon 2/22 for Pd 5A
  • Convert the pair of parametric functions describing free fall motion in two dimensions (x(t) and y(t)) into a single equation y(x) by eliminating the parametric variable, t (use substitution method reviewed in class). Bonus if you use the polar version of the initial velocity <V_o, Θ> rather than the rectangular version <V_xo, V_yo>
  • Don't forget your "final" WPBD Entry - 10% of your Q3 grade!
    • Contest was supposed to end Friday 2/12, but I'll extend to Monday after vacation. Be forewarned--I asked the WPBD folks to close out this contest on 2/18, so you may be locked out after that date!! Enter something immediately to make sure you get a minimum grade.
    • Here is a link to the local contest results. You must enter a bridge under the local contest code TBHS and use a user name that I can easily tie back to you. This is an individual contest, so you must make an entry using your individual account.
    • This contest is worth 10% of your Q3 grade and will be graded similar to our other WPBD competitions!
    • Significant Q3 Bonus + secret prize if you end up in the top 20 in the Northeast Zone 1 by the end of the qualifying round on March 5th (or if you qualify for the semifinal round). Be sure to enter your best bridge under your TEAM account!!
• Due on Thur 2/11 for both classes (Pd 2 should have done prior to start of class, Pd 5A can complete during the first 20 minutes of class)
  • Suppose you roll a ball off a table that is 1 meter high. If the ball is rolling at a speed of 2 m/s ...
    (a) State any assumptions for the problem and draw a nice diagram, then write down initial conditions and formulae
    (b) When and where will the ball hit the ground?
    (c) Graph the path of the ball. Calculate 10 (x,y) coordinates using your equations--be sure to space out those points at regular time intervals (the first point should be at the edge of the table, and the 10th should be just as it hits the ground). Show your calculations (Excel is a nice tool to use!).
• Due on Wed 2/10 for Pd 2, Thur 2/11 for Pd 5A
  • Suppose a hunter holds his rifle at a 30 degree angle of inclination and fires a bullet. If the muzzle velocity is the speed of sound...
    (a) State any assumptions for the problem and draw a nice diagram, then write down initial conditions and formulae
    (b) What is the range of the rifle?
    (c) When does the bullet hit the ground?
    (d) How high does the bullet go?
• Due on Tues 2/9 for both classes
  • Write a brief addendum to your bridge analysis report that summarizes the results of the bridge testing. How did your results compare to your initial predictions in your bridge analysis report? If you didn't make a prediction or your prediction was not correct, correct it and compare it to your actual results. Here is a summary of the actual results.
• Due on Fri 2/5 for both classes
  • Read & notes from Holt Physics 3.1, 3.2, 3.3, 5.1, 5.2, 5.3, 5.4 (3.1 & 3.2 are review). We'll discuss the details of these chapters in class over the next two weeks. Mr. Brown is out of extra books. I have one classroom text, and I'll make copies of the sections for those who need it (pick up on Thursday and check the wiki just in case I post the pages; share until then!). You may use class time on Wed/Thu to get started on this assignment and ask questions.
  • When you ride a roller coaster, what do you "feel" that makes the ride fun/scary/enjoyable? Make a list of at least 4 - 5 sensations - be specific what you feel and a what point on the roller coaster it occurs.
  • Be sure to update your WPBD registration with local contest "TBHS" and submit at least one bridge (they only update score sheet once a day, so should submit a bridge by early Thursday)

Quarter 2 Assignments (not a complete listing)

• Due on Fri 1/29 for both classes West Point Bridge Designer - final pre-tournament bridge!
  • Any bridge!
  • Also you must register as an individual competitor for the 2010 contest and as part of a two-person team. A copy of your registration confirmation must be handed in at the beginning of class.
• Due on Thu 1/28 for both classes Make a name tag and attach to your bridge!
• Due on Mon 1/25 for Pd 5B, Tues 1/26 for Pd 2 West Point Bridge Designer - sixth bridge!
  • Any 24m meter bridge!
  • Period 2 must have initial price by end of class on 1/25
  • Period Period 5B may provide an updated bridge price by the beginning of Pd 5A on 1/26
• Due on Fri 1/22 West Point Bridge Designer - fifth bridge!
  • any 16 meter bridge!
• Due on Wed 1/20 Pd 5B, Thur 1/21 for Pd 2 West Point Bridge Designer - fourth bridge!
  • 12 meter bridge that uses either one or two cable anchorages.
  • Revise your WPBD design paragraph to include a new hint on this wiki page (editing password is the name of Mr. Rhine's monkey).
  • When you are in the "drawing board" mode, you can view a "member list" pane (it pulls out from the right side of the window). How does the "Load Test Results Report" relate to this member list pane? Export your "Load Test Results Report" into excel and show what calculations you must make to generate the member list pane. Print out your modified Excel spreadsheet and write write down the mathematical relationship between the two reports.
• Due on Fri 1/15 for Pd 5B, Tue 1/19 for Pd 2 West Point Bridge Designer - third bridge!
  • 12 meter bridge that uses a pier (you may select the height of the pier).
  • Write a one paragraph description of one important cost reduction method for WPBD. Cut and paste your description to this wiki page (editing password is the name of Mr. Rhine's monkey).
  • Print out your cost report, review it, and hand it in.
• Due on Fri 1/15 West Point Bridge Designer - second bridge!
  • 12 meter bridge that uses arch abutments (you may select the height of the arch abutments, 4m, 8m, or 12m).
  • For your "final" (or close to final) version, print out the "Cost Calculations Report" and "Load Test Results Report." On the Load Report, pick a sample number from each data column and explain what it means (write a two-three sentence explanation for each column). Be sure to use correct engineering terminology that you learned from our reading in the book.
• Due on Wed 1/13 West Point Bridge Designer - first bridge!
  • Download West Point Bridge Designer 2007 at home and try it out
  • First contest (due at beginning of class on Wed (Thurs for Pd 5B) - create a basic bridge at a height of 0 meters (this is the only option you should change in the setup). Bridge must be up and running during the first 5 minutes of class. Lowest cost = 100%, remaining grades are ranked by cost based on your place (n) as follows... 100 - 1.5(n-1) + earn-back points as described for bridge testing.
• Assigned on Mon 12/21, Due on Mon 1/11 Two Labs and Your Finished bridge -
  • Class time on 12/22, 12/23, and 1/4 - 1/8 is yours to work on reports (suggest you fab bridge at home under controlled conditions)
  • When you return from Holiday break, please be prepared to show me progress on the three tasks...
    1. Material Strength Lab Report - 2 hours to complete
    2. Bridge Analysis Lab Report - 2 hours to complete
    3. Fabricate standard bridge (or extra credit if you fabricate a different type) - 6 hours to complete
  • You already have a portion of each of these tasks completed if you completed all of the homework assignments in December. My time estimates assume you have completed those preliminary tasks properly and that you use that work as a starting point.
  • Each of these tasks is worth approximately 1/6 of your Q2 grade. Anything turned in late will lose 10% per day.
  • I strongly recommend you write draft reports over vacation and ask me to review it and provide feedback during the week of January 4th.
  • Juniors - if you expect me to write a college recommendation for you next year, these reports will be one of the major factors I use to evaluate your writing/communication skills. Make sure you do a good job and turn them in on time!
• Due Mon 12/21 Preliminary Material Testing Analysis & Fab Prep
  • Bring in your full-scale bridge drawing you taped together last month. Make sure it is printed to 100% scale (center-to-center measurements on vertical tubes should be exactly 10 cm. 1 HW check
  • Please bring your bridge book to class with you and review the fabrication process at the end of chapter 1 to familiarize yourself with the process.
  • Enter your member testing data into both worksheets in this excel spreadsheet and PRINT BOTH PAGES BEFORE COMING TO CLASS. Make sure you you fill out the data at the top of the pages as well. If you haven't completed all of your testing, print out the data you've collected so far. You'll have independent work time on Tuesday & Wednesday to finish any outstanding work. Bonus points if you can correctly set up Excel equations in the orange-shaded areas and create some useful graphs using Excel's chart wizard tool on your own. We will discuss and demo in class on Monday for those of you who need help with Excel formulas and graphing. 1 HW check
  • Look at the data you collected. Why did I select this particular set of types and lengths for you to test? Obviously I had a series of hypotheses in mind for you to explore. Please type up answers to the following questions...this is the start of your material analysis lab report!
    • Please type up a list of AT LEAST three hypotheses that you could answer using the data you collected regarding bars under tension, and at least three more regarding tubes under compression. 1 HW check
    • What is the ultimate purpose of collecting this data? Be as specific as possible when answering this question! 1 HW check
• Due Fri 12/18 - Test 10x10 and 10x6 tubes, and 4 mm, double 4mm, 6 mm, and 8 mm bars (use this excel spreadsheet to record data)
• Due Mon/Tue 12/14/15 - Fabricate 16 full length tubes from your team's pactice/test page, and all of your personal 10x10 and 10x6 tubes - 4 checks'

• Due Fri 12/11 - Make two Excel Spreadsheets using Trussmaster results for FF Bridge - HW Due 12/11/08 - 3 checks
• Due Mon 12/7 -More Truss CAD Tool Practice - HW Due Mon 12/7/09 - 4 checks
• Due Wed 12/2 - Truss Analysis - HW due 12/2/09 - 2 checks
• Due Wed 11/25 - Truss Analysis Packet - HW due 11/25/09
  This packet was handed out on 10/16/09, and is due on 11/9/09 (extended to 11/25/09 to allow students to come in for help)
• Rube Goldberg Grading Rubric and Specifications