Introduction 

Submit your sketch during lecture.

• Schematic drawing of your musical greeting card: power, data, user interactions. It's okay if you don't know the formal way to do this; do your best. 
• Sign up to be a "writer" of this wiki webspace by clicking on the link in the email you were sent or by click on the "to join this workspace, request access" link on the right.
• Read Johnny Lee's thought piece on the re-emergence of DIY vs. big organizations.
• Reading: Practical Electronics for Inventors (Scherz), Chapters 2.1-2.16 (Current to Kirchoff's Laws), 3.1-3.3, and 3.5.
• Complete Room36 Safety Training. This is necessary now in order to do next week's homework, as well as the class project.

Microcontrollers, Prototyping 

Bring your box to class and upload a photo of it to your wiki folder.

• Generate designs for a customized box using Adobe Illustrator or a CAD program.
• Go to Room 36 and make your customized box using the laser cutter or other fabrication tool.
• Find the PRL laser cutting resources website, including starter box instructions and CAD files. 
• Read the Arduino Foundations Page. We expect this to be confusing! Do not be worried, but do ask/post questions.

Interaction Diagramming

Bring 5 photos and Verplank diagram (paper or digital) to share in lecture.

• Take 5 pictures of people listening to music in different situations. Write a (very!) brief description for each picture to explain what is going on. Then for each one, answer the question: "This person needs a way to...?" and include a few notes about what features would be useful in that context.
• Read the Interaction Design Sketchbook by Bill Verplank. 
• Pick 1 of the contexts above and develop a (rough!) MP3 player design for each. Make a Verplank diagram for that design. (Optional: develop a design and Verplank diagram for a second context.)
• Reading: Practical Electronics for Inventors (Scherz): Chapters 11.1, 11.8, 14.1-4.

Project Plan

Bring project plan to your scheduled 1-on-1 teaching team meeting this week.

• Develop a preliminary plan for your MP3 player design.
• Include as much as possible, such as what parts you plan to order (or what kind of parts you are shopping for). This includes displays, sensors, knobs, buttons, levers, ICs, etc.
• If you are entertaining multiple design possibilities, develop preliminary plans for all of your designs. Try to keep some common basis across your designs.
• Enumerate key challenges that need to be solved. This can include sourcing materials, figuring out technologies or understanding situations or users.
• Read how to Spark Innovation Through Empathic Design by Leonard and Rayport.
• Reading: Practical Electronics for Inventors (Scherz): Chapters 4.3, 5.3, 10.1, 13.1-13.3. 

• Read the VS1053 data sheet or VS1063 data sheet. Email questions about the decoder to the EE47 teaching team!
• Rework your MP3 player design, thinking about hardware and a housing.
• Order any specialty parts needed for your MP3 player.
• Propose a "Plan B" MP3 player design that removes one or two of the major technology challenges but still presents a viable working music player.
• Propose a project timeline.