EE 476: Laboratory 6

Design project.

For this exercise, we want you to pick a project, then design and build it. During this period there will be no other assignments, so we expect you to spend all of your time for this course on the project. As a rough estimate, this means a minimum of 12 hours/week in lab. You will be expected to be in lab at the usual times and to show significant progress each week of the project.

Grading:

• Grades will be assigned by rank-ordering all projects in all sections, thus you will be competing against everyone in the class for this grade.
• 20% of your project grade depends upon being prepared each week and on the quality, quantity and character of the work done during each week. Each week in lab a one-page progress report may be due.
• 30% depends on the project demonstration at the end of classes.
• 50% will be based on your project writeup.
• The members of a group may be graded differentially if it becomes obvious to the staff that team members are not contributing equally.

When choosing a project you will need to consider availability of hardware, time available, a monetary budget, and your programming skill. You may want to look at several of the links on the 476 home page for project ideas.

Depends on what you will build. You should talk often to your lab instructor. You can use either ASM or C or a mixture of the two. Your project will be limited to using one STK-500 development board at all times. If you need more than one cpu, you will have to build a prototype board, which will count against your budget.

Special project restrictions:

• Video games will be allowed as final projects ONLY IF you use hardware or software techniques which have not been used before. This may include novel controllers, more memory, better color, better resolution, better sound or other effects. Each video game must be approved before you hand in your project proposal. Just proposing a game which has not been previously used in this class will not be approved.
• No projectile devices of any kind will be allowed.

Budget considerations:

Your budget will include MCU(s), boards you build, power supplies, parts you order, and everything else you buy. Budget exceptions:

• Hardware you already own is not included in the budget. If you use old hardware, you must be able to prove that you owned it before Fall 2006.
• Vendor samples are not inlcuded in the budget. Good places to find samples:
  • Analog Devices
  • FreeScale Freescale has donated 50 sensor boards which include submodules (with solderable headers) containing:
    • MC33794: E-Field sensor
    • MMA1260 Z-axis, 1.5g Acceleration Sensor
    • MMA6261 XY-axis, 1.5g Acceleration Sensor
    • MPXM2110GS 1.45 PSI pressure sensor
    • MC33993 22-way multiplexor for switch detection
    • 9 volt battery clip with 3 and 5 volt regulators
  • Maxim
  • National semiconductor
• Hardware you can scrounge is not included in the budget. Be prepared to explain where it came from.
• Projects which involve research groups or design projects outside the course will be considered on a one-by-one basis for budget exceptions. This is to encourage collaboration with ongoing projects at Cornell. You must get this exception approved by the instructor.

I will order parts from the following vendors once/week:

• digikey.com Very good inventory and parts search capability. Hsa linked data sheets.
• jameco.com Some robotics and mechanical stuff. Interesting collection of sensors.
• allelectronics.com Surplus displays, motors, switches. Good LCD prices.
• mpja.com Surplus displays, motors, valves, mechanical.

Budget Details:

• The total budget this year will be $50 per group including the amount you spend, the amount I spend, and the following rental fees for the following lab hardware. Please note that these costs are for budget calculations only. No money changes hands.
• Costs:
  • STK500 $15
  • white board $6
    -- solder board (6 inch) with the same layout as a white board $2.50
    -- small solder board (2 inch) $1.00
  • each power supply $5, each 9 volt battery $2. We do not stock batteries!
  • custom PC board $5
  • Max233CPP for custom PC board $7 (unless you sample it from maxim-ic.com!)
  • RS232 connector for custom PC board $1.
  • Mega32 $8 Always use a socket for the MCU
  • Mega16 $5
  • Mega163 $2
  • AT90S1200 or 8515 $1
  • LCD (16x2) $8 Do not not solder this to your project!
  • Keypad $6 Do not not solder this to your project!
  • B/W TV $5
  • Color TV $10
  • Transmitter RCT-433 $4
  • Receiver RCR-433 $4
  • 2 pin flat jumper cables $1 each (starting 2008)
  • sip or header socket/plug $0.05 PER PIN (starting 2008)
  • SOIC/SOT23 carriers $1.00 (starting 2008)
  • DIP socket $0.50 each
• Penality for being overbudget: deduct points=((cost-50)*0.316)2 If cost>$50

Student observations:

A group in 2002 added the following thoughts.

Here are the top 10 things you can do to survive EE 476 Final Project Month:

1. If you use a chip other than the one you've been using in class all semester, read the documentation thoroughly, subtle differences are going to kill you. It's just a matter of for how long they kill you.
2. If you feel heat from your board, or smell burning: THERE IS A SHORT. Don't look for the short first. TURN OFF THE POWER!
3. If the voltages look right, and the wiring looks right, but nothing's happening, it is possible that your chip is fried, don't be afraid to ask for another chip. This would've saved me a week of pain, and a bad hit to morale.
4. If you're stuck on something, ask Bruce or the TA's. Make a reasonable attempt to solve it yourself, but don't sit there for three hours just because you cannot remember which port of the opamp is correct. Remember, we all look like we're working, so Bruce's spider sense won't kick in. You must call him, he can't call you.
5. Order parts early. Order duplicates if you can afford it.
6. If you're going to solder onto a perf board, you don't have to rip apart your breadboard. Just make another copy of the circuit.
7. You will not finish if you don't start early.
8. You probably won't finish if you don't take advantage of extended lab hours.
9. Do what you can do out of lab out of lab.
10. Seriously, pick a project you'll enjoy. These four weeks can be pain, or the most fulfilling of your Cornell Career.

A group in 2003 added this:

Know your limits. As much as we'd all love to have a final project whose bells and whistles rival Las Vegas slot machines, realize that a month is a very short time, and that dealing with the disappointment of having to scale back your project as you progress along is much better than coming to the same realization on the day of your demonstration.

You will be graded on several aspects of the project:

1. Appropriate level of hardware/software complexity.
2. Appropriate use of assembler and C.
3. A project which works according to specification (which you will write).
4. Level of effort and organization shown in lab.
5. Ability to say within budget.
6. A demonstration of the final project during the last regular scheduled lab period of the semester. The demonstration will include an explanation of your web page describing the project.
7. Completeness and understandability of the final report. The report must be handed in when you do the project demo during your last regular lab period. The report which you hand in must be printed directly from a web page which you construct. If you submit your web page to be included on the course web page (see below), you do not have to print source code. The web page will consist of one folder with exactly one html file with the file name index.html. In the folder there may be c-source files, images, mpegs, or other supporting documents linked to the one html file. Style examples: wireless EMG, intellibot.
   Documentation must include all the major sections. You may omit specific sections not relevant to your project:
   • Near the top of the first page: project title, student names and optionally netids.
   • Introduction
     • One sentence "sound bite" that describes your project.
     • A summary of what you did and why.
   • High level design:
     • rationale and sources of your project idea
     • background math
     • logical structure
     • hardware/software tradeoffs
     • Relationship of your design to available IEEE, ISO, ANSI, DIN, and other standards.
     • Discuss existing patents, copyrights, and trademarks which are relevant to your project.
   • Program/hardware design:
     • program details. What parts were tricky to write?
     • hardware details. Could someone else build this based on what you have written?
     • Be sure to specifically reference any design or code you used from someone else.
     • Things you tried which did not work
   • Results of the design:
     • speed of execution (hesitation, filcker, interactiveness, concurrency)
     • accuracy (numeric, music frequencies, video signal timing, etc)
     • how you enforced safety in the design.
     • interference with other people's designs (e.g. cpu noise, RF interference)
     • usability by you and other people
   • Conclusions:
     • Analyse your design in terms of how the results met your expectations. What might you do differently next time?
     • How did your design conform to the applicable standards?
     • Intellectual property considerations.
       • Did you reuse code or someone else's design?
       • Did you use code in the public domain?
       • Are you reverse-engineering a design? How did you deal with patent/trademark issues.
       • Did you have to sign non-disclosure to get a sample part?
       • Are there patent opportunites for your project?
     • Ethical considerations. Refering to the IEEE Code of Ethics, specifically explain how decisions you made or actions you took in this project were consistent with this Code of Ethics. I expect at least 200 words on this topic. A bulleted list will not be acceptable.
     • Legal considerations. For instance, if you use a transmitter, you must discuss the appropriate FCC legal restrictions.
   • Appendix with commented program listing
   • Appendix with schematics (you can download free software from expresspcb.com to draw schematics)
   • Appendix with cost details with all part numbers and their price. This cost will include components as described in the Budget Considerations section.
   • Appendix with a list of the specific tasks in the project carried out by each team member.
   • References you used:
     • Data sheets
     • Vendor sites
     • Code/designs borrowed from others
     • Background sites/paper

The web page may optionally be submitted for inclusion on the class web page. If you will ever be asking me for a recommendation, I suggest that you submit your project. The project web pages help me remember the details of a project.
If you wish to do this:

1. Put all of your web page files in one directory.
2. Name this directory with the concantented netids of all the group members, e.g., brl4_bfg88
   Since the pages will be on a UNIX server, you must:
   • Make sure the cases (upper/lower) of all filenames agree with their hyperlinks.
   • Separate folders in a path using foreslashes (/) not backslashes.
   • Use only alphanumeric characters and underscores in filenames (NO SPACES, no punctuation).
   • Check all your links to make sure they are relative to your main page.
   • Use a directory name consisting of the group's concantenated netids.
3. ZIP the directory.
4. email it to BRL4@cornell.edu.