Assignments

25.151 Assistive Technology & Electronics Homework Assignments
Listed in reverse chronological order!

Lab 7: RC Charging & Discharging Circuits due 6/5/09

• This last lab is worth DOUBLE (approximately 7% of your grade). It is fairly straight forward, and is a great opportunity to demonstrate your technical expertise and communication skills.
• Class notes from May 25 - 27 (sorry if difficult to read, it's hard to write on Smart Board!
• Lab7 class handout with initial measurements recorded
• Data & Excel Template for Lab 7 be sure to read the instructions on the first tab before you start!
• Don't wait until the last minute to do this lab! The worksheet handed out on Thursday should be done my Monday. The rest of the lab should be done by Wednesday with time left for you to ask questions, if necessary.

ATDF Projects, Binders, and Wikis Complete due 6/5/09

• Projects must be checked off by Rhine or Thomas and must be in the lab fab room by Friday, June 5. Your team must make an appointment for project checkoff.
• Remember, for projects completed after 5/22/09, you lose 1% per day of your final grade. However, if you take some time to fill out this "rebate" form (it is in Microsoft Word so you can type it up), we will excuse some or all of those lost points if you have a high quality working project/binder/wiki. Each person must fill out a form to get their own late points "refunded."
• After your project is checked off with Ms. Thomas or Mr. Rhine, you need to deliver you project to your client (with the user and maintenance instructions) and ask them to provide feedback using this form (MS Word version). Please fill out the top of your the form before you give it to your client. Also, bring your camera and ask your client if you and get a photo with your team, the client, and the project (1% grade bonus for a client photo!).

HW due 5/27/09

• Do the Thevein problem handed out in class today (first page only--hold off on next two pages until you know answer is correct)
• Re-read and update notes on Chapter 9-5
• Do problems 23-28 (do part a and c only for each of these problems), problem 43
• Additional problem related to #25: Using proper algebra, calculate how long it will take to charge the capacacitor half way.
• Additional problem related to #26: Using proper algebra, calculate how long it will take to discharge the capacacitor to 8V if it it starts at 20V.

HW due 5/28/09

• the last two pages of the Thevenin problem (NOTE THE BONUS ON THE LAST PAGE--IT MUST BE DONE AND SHOWN ON 5/28!!!)
• problems 44, 45 (for 45a, Bonus if you can recreate the waveform on your graphing calculator using translated piecewise functions)

Final Exam Bonus Demo due COB 5/28/09

Team HW xxx: ATDF Project Wiki Update Due Tuesday May 26th

1. Wiki Update

• Anything you created electronically (see all items in #3 and #4 above) should be added to the APPROPRIATE spot on your wiki
• Organize your wiki -- keep it simple
• Every wiki page should have visual content--no text only pages
• Make sure all your important work is Attach:ed to the wiki (EAGLE files, circuit diagrams, powerpoints slides, photos of your team at work, photos of clients using product, etc.)

2. * A WELL WRITTEN and INTERESTING newspaper article with accompanying photos.

• Use an "angle" that will capture the reader's.
• This is not an essay, it is a newpaper story--if you don't know the difference, get some help from your journalism teacher at your school. If you don't read a newspaper regularly, you won't be on target, so get external help!
• Smart groups will get a talented journalism student from their school to write a great article for them!!!!
• Make a one page cover sheet for the article that includes the name of the students on your team (and the name of the person who wrote the article if needed), and the twon you are from. We will send (email) your cover page

Lab 7 Due June 5, 2009

Team HW xxx: Final ATDF Project Binder & Project Delivery Due Friday May 22nd

Project Delivery & Client Feedback: (Week of May 18th)

• "Deliver" your project the week of May 18th and get client feedback (I'll attach form here)
• Bring the project back to UML to make any final adjustments requested by the client (and we will show the projects at the mini-AT fair at graduation). Get photos of client with the product (ask for permission to use their photo!).
• Final ATDF grade (35% of your semester grade)
  • You need an on-time, high quality fully functional project in order to get an A
  • Low quality, non-functional projects will receive an F
  • Seniors: your grades close on May 22nd - you must have project complete by then!!
  • Everyone: Late projects will reduce your overall course grade by 1% per day. Projects not delivered by June 5 will automatically receive an "F."

Turn in a team project binder (Friday May 22nd)

Organize all of your materials into a project binder (use white binder in the lab). Set up tabs as follows:

HW xxx: due Friday, May 15

TURN IN YOUR MISSING (LATE) LABS--SOLUTIONS WILL BE HANDED OUT ON MONDAY MAY 18!!

Team HW xxx: Due Wed/Thurs May 13/14

Final Project Design Documentation for Fair - due on Friday May 15

(see items listed below)

Team HW xxx: Due Wed/Thurs May 13/14

Draft Project Documentation for Fair - Draft due Wed/Thurs May 13/14

• 3 Slide Powerpoint
  • Also prepare and practice a 4 minute team presentation
  • If you project is "not quite finished" for the fair, how can you gracefully redirect attention to what the project you WILL deliver on May 22?
• User Instructions (one page) - very visual, easy to understand
• Setup and maintenance instruction (one page) - very visual, easy to understand (due on Friday May 15)
• Marketing brochure
  • How can you "sell" your project? What makes it unique & desirable? Who is your customer?
  • Use tri-fold MS word template
  • Must print 10 color copies for fair (we have brochure paper in lab, and will have color inkjet in lab)
• Project Poster
  • Professional look, nice visuals, color, try to keep it relatively simple & few words, rely moreso on diagrams that you will refer to in your 4 min
  • Posters are under table in fab room, we also have glue sticks, tape, scissors, construction paper on that table
  • Focus on client & final product, design process
  • Include total cost: if your total is over $150, make two culmuns to show the parts we ordered in one column (this column should be < $150), and column #2 would be cost of parts we already had on hand from the parts cabinet)
  • suggest you recycle your powerpoint slides for poster or vice-versa
  • be sure to include circuit diagrams and board layout diagrams from EAGLE, with brief descriptions of function for major functions
  • be sure to include any code you wrote for the Arduino
  • you should also include a one-page functional block diagram with associated project diagrams/visual aids if you have multiple major circuits (e.g. one block is represents blinker circuit)--this would also probably be one of your three powerpoint slides and the basis for your presentation)

Lab 6: Data Sheet Applications (e.g. 555) due Tue Apr 28 both cohorts

• Pages 1-2 due Apr 9/13
• Page 3 due Apr 16/17
• Breadboard and test page 4 over vacation (don't go overboard--it is a really simple exercise)
• Turn in entire lab (completed pages 1 - 4) on Monday after vacation

Make progress on your ATDF project over vacation!

If everyone puts in their fair share (and you plan and use time efficiently), you will avoid a "time crunch" later on! (remember, AP exams are coming up...)

Team Prototyping Grade = 5% of final grade Due Apr 29/30

Grading rubric

Your team will meet with Mr. Rhine & Ms. Thomas for 10 minutes to show...

• Prototype of working electronics (breadboard, main functions working, but you may LEDs to represent larger loads and simple switches from lab to represent your final inputs)
• EAGLE Schematic done (board layout started)
• If you are using a microprocessor, you must demonstrate that you know how to write a program, download it, and run it (the program must do something interesting to convince us that you are headed in the right direction)
• Prototype of packaging and parts of the product that you must fabricate (i.e., select final project box, cardboard prototype of parts, if laser cutter will be used, you should have provided artwork to Bill by previous class to trial cut using cardboard)
• Initial analysis of power consumption and power supply
• "Final" Parts orders (be sure to take into account shipping time & cost--fast shipping is typically very expensive!)
• Final flow diagram with concise description of exactly what product does (with diagrams)
• Demonstrate that each team member is pulling their weight (nobody is "slacking" and nobody is "monopolizing all of the work"

HW 16 Intro to Capacitors due Apr 16/17

• Review sections 9-1 to 9-5
• Do problems 1 - 23 all (these are easy plug and chug problems)
• Check your answers against the posted answers...

Team HW17 Update Team Planning on wiki due Apr 16/17

On Thursday & Friday your team will meet with Mr. Rhine & Ms. Thomas for 5 - 10 minutes. During this time you should very briefly review your current plans for you final product, show what prototyping you've done so far, and spell out IN DETAIL what each member of the team is doing for the project (Team HW 17: assign tasks and due dates on your team wiki planning page). Each team member must be gainfully employed! You don't necessarily need to work on tasks individually, but you should assign a leader to different major tasks and hold that person responsible for getting the job done on time with pre-defined support from other team members as needed. If other teams are working on similar tasks, feel free to collaborate to save time and energy!

Start prototyping and refining your final design!

Order additional parts ASAP!!

Friday Apr 3 is an AT&E C-Day

• Bring in your working Tingler
• Be prepared questions on data sheet research "Lab" 5
• Read/Notes Section 8-9 (how to use an oscilloscope)

Monday is a Bat C-Day

HW 14: Chapter 9 due Apr 7/8

• Read/Notes Section 8-9, 9-1 to 9-5

Turn in "Lab" 5: due Apr 6/7

• "Lab" 5 should be done as HOMEWORK, not in class (with the exception of one quick experiment, it is reading/research assignment that should take 2 - 3 hours). We will be happy to answer any questions during class.
• Be forewarned: we may decide to count this lab as a series of graded homework assignments worth 5-10 credits rather than a lab grade, so make sure it is done on time.
• We printed out a copy of all of the data sheets to make your research easy, but if you need them we've also added them to useful links.

Team HW 15: Due Friday Apr 3

• Turn in your budget and identify your team finance officer (if your budget is somewhat over $150 and is legitimate, don't worry because others will be less than $150)
• Turn in your first parts order form
  • Use this Microsoft Word form
  • For legibility, please type or cut & paste from the web when filling out the form
  • We will only accept properly named order forms (e.g. smith_order1.doc) from your team finance officer's email account
  • Send orders to atdf@uml.com and cc: donald_rhine@uml.edu
• Turn in your initial 360 degree peer review form (MS word version)

Quiz 3 Due Monday Mar 30 at 7:45 am for everyone!

• For Quiz 3 you need to use the same resistor & voltage values from Quiz 2
• Be sure to carefully and neatly show your work using the step-by-step processes discussed in class & text
• This quiz is worth 2X Q1 and Q2! Late penalty: -20% after 7:45 am Monday, -40% Tuesday 7:45 am, -100% Wednesday (solutions handed out Wed)
• Quiz 3 Bonus Template you must use this template and submit by email to Mr. Rhine saved in Microsoft Excel 2003 format as follow: rhineQ3Bonus.xls

PDR Presentation & Backup Materials & Budget & First Part Order due Apr 1/2

• 5% - 6% of your semester grade
• Please give your PowerPoint presentation to Mr. Rhine to load on presentation computer the day before your presentation
• PRACTICE your presentation - everyone needs to participate
  • 10 minute time limit (-20% per minute over time)
  • 5 minute Q&A
  • Select a professional team and project name
  • Presentations in reverse wiki order (note The Farm teams need to tell us their preferred order)
  • Make you follow content guidelines discussed in class (see below)
• On the day of the presentation...
  • Dress professionally
  • Hand in your detailed initial designs for your 3 alternatives to Mr. Rhine (diagrams identifying major parts, notes, parts list, summary of your pros and cons discussions, rough cost breakdowns, etc.)
  • Hand in a detailed budget for your final design.
    • Designate ONE person on your team to manage/track your budget and to order parts (we will only discuss finance with your designated Finance Officer).
    • Your budget should list all anticipated parts for final design, including shipping costs, + management reserve for things that break, parts you didn't think of, etc.
    • Management reserve shouldn't exceed 20%. When your project is complete, you'll create a budget versus actual analysis to see how well you estimated the project cost.

Turn in Lab 4: due Mar 25/26

HW12: Laser Cutter Practice due Mar 23/24

• Create a key chain in MS Word 2003 (use file naming convention specified in assignment) and email to Bill Harmon before the start of class on due date

AND WORK ON ATDF PROJECT!!

HW13: Draft PDR PowerPoint & Backup Materials due Mar 23/24

• On 3/19 and 3/23 you should ask in class if you need to discuss the presentation format
  • Introduce team
  • Talk about your client (Include statement of need)
  • Requirements and Constraints
  • Main Project Ideas (1-2 Slides per idea)
    • Design Details + cost analysis + Diagrams
    • Pros/Cons or other decision making insights
    • Make sure you include a functional block/flow diagram for your final solution
  • Conclusion
    • Discuss client feedback on your 3 ideas
    • Select Final Project Idea
    • Q&A
• You should have fleshed out 3 design alternatives and selected the final design
• For each alternative you must have...
  • Drawings
  • Block/Flow diagram for electronics (show top-level functions & connections)
  • Parts list
  • Estimated cost
• You should show how you decided on your final design (perhaps it contains elements from all three)
• The final design should be fleshed out in more detail than the other two
• Prepare a professional Power Point presentation and practice it as a team (all team members must participate in the presentation). Be sure to discuss the format of the presentation in class as a group!

HW11: due Mar 17/18

Come to class with Circuit 3 Breadboarded. Click here for the schematic It is the original 555 timer circuit that you breadboarded.

AND WORK ON ATDF PROJECT!!

due Mar 11/12

Read Lab 4 and be prepared to ask questions in class.

AND WORK ON ATDF HOMEWORK FOR FRIDAY!! See box to the right

HW11: Start working on brainstorming design alternatives... Due Fri, Mar 13

• Review Step 3 and Step 4 of Engineering Design Process and get to work!
• By Friday, March 13, make sure your team has...
  • Posted the results of your brainstorming sessions (20 ideas narrowed down to 3) (1 team HW credit)
  • For your final 3 ideas, assigned a team member to flesh out each one. Post an overview paragraph and a rough diagram for each idea in a logical spot on your team wiki. (1 indiviual HW credit)
  • Created these management tools: (1 team HW credit)
    • Created a wiki page with an easy-to-read schedule of key events to complete your project. Look through the various steps of the engineering design process and pick out the different formal tasks you need to complete and include them as milestones on your management schedule. Here are a some milestones you must include...
    • Created a team task list that meshes with your team schedule above--feel free to coordinate with other teams ot cohorts to design a template that all teams can use. You will update this task list as your project evolves.
  • Showed up on time for your appointment and gave Mr. Rhine & Ms. Thomas a 5 to 7 minute status update (1 team HW credit)

Quiz 2 (Take Home): Due Mar 9 at 7:45 am for everyone! Zero if turned in late!

• If you didn't get a quiz from Mr. Rhine on Friday, you can print out a copy
• Q2 should take ~20 min if you're on top of your HW
• Q2 Bonus (up to 6%): here's the Excel template (if you don't have MS Office, use free OpenOffice (be sure to save file in Excel 2003 format)
• Another Bonus Opportunity from Chapter 6 Lecture Notes (due on Tuesday Mar 10 for everyone)

HW 10: due Mar 9/10

• Print out and complete this HW (six applied Chapter 6 problems)
• Problems 45 & 47 (last 2 pages) are optional but recommended if you want an A on the next quiz!

Final Project Proposal Due Mar 9/10 (multiple wiki pages)

• The project proposal (and associated research) is worth 5% of your grade
• Complete all tasks listed under Step 1 & Step 2 of the engineering design process and document the work on your wiki, e.g. ...
  • Team member page
  • Client search page with contact memos
  • Research results page
  • Project Proposal page (please be sure to add a paragraph to your proposal describing your research into existing solutions)

HW 9: due Mar 5/6

• Read/Notes Chap 6 sections 5 - 7
• Do problems 1 & 2 on this handout (#3 will be done as an example lecture problem in class)
• Do Chapter 6 problems: #15, 16, 34→AND find the current and power in R₄ for each circuit!,36,37→AND find the I_T, I₂, I₄, and I₆ for #37!,39,40,43
• Note that these are the "much more challenging" problems for these two key chapters!! No work = no credit!! "answers"

Mar 5/6: Draft Project Proposal Due (wiki page) Make sure you complete all tasks listed under Step 1 & Step 2 of the engineering design process and document that work on your wiki!

HW 8: due Mar 3/4

• Read Chapter 6, Sections 1 - 4 (& notes)
• Chapter 6 Intro Problems (handout) (full size version)
• Chapter 6 Problems #8 & 9 (print circuit diagrams from this file!) "answers"

Turn in Lab 3: due Feb 25/26

HW 7: due Feb 27 - hand in before you take the quiz

• Chapter 4 Problems #37-47 odd
• Chapter 5 Problems #37-45 odd
• Note that these are the "much more challenging" problems for these two key chapters!! No work = no credit!!

Feb 27: Client search should be done!!

Turn in Lab 3: due Feb 25/26

HW 6: due Feb 25/26 Feb 27

• Chapter 4 Problems #29-33, 35
• Chapter 5 Problems #27-35 odd
• Note that these are the "much more challenging" problems for these two key chapters!! No work = no credit!!

Vacation Reading & HW (HW 5): due Feb 23/24

• Reading and Notes on Ch 5
• Chapter 4 Problems #17-27 all (counts as TWO HW checks!)
• Chapter 5 Problems #3-21 all (counts as TWO HW checks!)
• Note that these are the "easy" (basic) problems for these two key chapters--be sure to do a good job as the quiz on Feb 27 will draw heavily from these concepts! We will be devoting most of class time on Monday - Thursday to discuss chapters 4 & 5 and to answer your questions on homework!!
• We'll post "answers" (values only, not the process) for you to check your work. We'll check off your "solution" (process + answer) after vacation.
• Make sure you SHOW ALL OF YOUR WORK (solution process + answers) for credit (otherwise zero HW credit!!)

Keep searching for Clients Over Vacation!

• You will need to have a client (and problem statement) identified by the Friday after vacation!!
• Continue to interview potential clients over vacation--remember, you'll probably need to talk to 2-3 potential clients before you find someone with a suitable problem for your team to solve!!
• If you think you have a good problem identified (that will incorporate SIMPLE electronics), contact Mr. Rhine to run your ideas by him for "pre-approval".

HW 4: due Feb 13

• Reading and Notes on Ch 4
• Chapter 4 Problems #1-15 odd
• We'll post "answers" (values only, not the process) for you to check your work. We'll check off your "solution" (process + answer) after vacation.
• Make sure you SHOW ALL OF YOUR WORK (solution process + answers) for credit (otherwise zero HW credit!!)

200 Point Client Search Grade due Feb 13

• 20 pts: Revise (clean up & organize) your team's wiki page
• 40 pts: Mr. Rhine will take your revised/edited intro letters and go final, then attach as a PDF to your "Client Search Page" (create one if you haven't done so already, and make sure your intro letter text is there for Mr. Rhine to use to create the letter)
• 40 pts: Under your "Client Search" page...
  • Make a list of potential sources for clients (each team member must contribute at least one source--put your name after them)
  • Make a list of interview questions to help guide your client interview (update after you stumble through the first interview!)
• 100 pts: Contact your first client, and document the outcome of that meeting/telephone call in a memo format on the wiki (if you scheduled you first interview over vacation, I'll accept that as an appropriate delay if you make a note of it and post the memo on that revised date)

Lab 3 Pre-lab: due Feb 11/12

• Breadboard 555 Timer Circuit
  • Circuit Diagram Here
  • Picture of breadboarded circuit here

HW 3: due Feb 9/10

• Read/Notes, Chapter 3
• Ch 3 Ques # 1-39 odd problems
  • Come to class with problems you have questions about

Lab 1 (Continued): due Mon/Tues 9/10

• Finish your board layouts on Eagle and bring a printed copy to class
  • Make sure you set your traces to 40 mil (Edit, Net Classes)
  • Be sure to add your name.
• Populate your Tingler circuit (Solder in the components)

HW 2: due Feb 3/4

• Read/Notes, Chapters 1 & 2
• Chapter 1 should be a review of information you already know, or self-explanatory. We suggest you try the chapter problems to check your knowledge.
• Ch. 2 Ques. #11 - 16

Lab 2: due Feb 3/4

• Read soldering kit instructions and take the quiz at the end
• Review Soldering Safety and answer the additional questions.
• Complete the practice soldering kit (we will give you the kit after you complete the safety quiz above, so finish the quiz ASAP!)

Team HW 2: due Feb 5/6

• Create a ATDF wiki page for your team

Team HW 3: due Feb 5/6

• Write a professional letter of introduction for your team.

Lab 1: due Monday Feb 2 (BOTH COHORTS)

• Create the "Tingler" schematic using the EAGLE schematic editor
• Print your schematic and hand it in at the beginning of class on Monday.-- color printing preferred if you have it! Be sure to use the text tool to put your name and date on the schematic - no hand-writing allowed.

HW 1: due Friday Jan 31 (BOTH COHORTS)

• Download Eagle and update the EAGLE libraries
• Finish the sample 555 blinker circuit started in class as practice (you do NOT need to turn this in, it is a self-practice exercise!).

Team HW 1: Due Jan 31 (BOTH COHORTS)

• Select an ATDF team (3 people, 2 different schools)
• Read these guidelines before you form your team!
• You must turn in a sheet with the signatures for each member and a professional name for your team.

HW xxx: due Friday mmm dd/dd

Team HW xxx: Due mmm dd/dd