lecture 3: case studies, mini-project introduction · pdf file•introduction to mini...

D-LabSpring 2010

Development through

Dialogue, Design and Dissemination

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Today’s Class

• Logistics• Charcoal Press Case Study• Technology Case Studies• Introduction to Mini Project

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Logistics

• Project Selection (Mar 1) – Design challenge descriptions due for

review by Wednesday, Feb 17 – Slides due by noon on Wednesday, Feb

24

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“Brute force engineering options often meet the criteria but somewhere there is a profound solution, which is simple, cheap, and beautiful. Hold out for this as long as possible.”

- Kurt Kornbluth Former D-Lab Instructor

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Fuel from the Fields Charcoal Project

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Forming Briquettes by Hand

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Fragile Briquettes

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Mechanized Briquette Maker ~$8,000

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The First Prototype: ~$25

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4 - 5 Briquettes/minute

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Time Study

Hammer, 24%

Load, 34%

Cleaning, 17%

Eject, 42%

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6 - 8 Briquettes/minute, $30

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$30 $20

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$20 $2

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10 - 12 Briquettes/min

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“If you want to make something 10 times as cheap, remove 90% of the material.” - Amy Smith D-Lab Instructor

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“Brute force engineering options often meet the criteria but somewhere there is a profound solution, which is simple, cheap, and beautiful. Hold out for this as long as possible.” - Kurt Kornbluth Former D-Lab Instructor

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“Everything should be made as simple as possible, but not

simpler.” - Albert Einstein

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“Simplicity is the ultimate sophistication.”

- Leonardo Da Vinci

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Now, Even Simpler

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Design Mini Project

Affordable Rainwater Harvesting

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Background and Inspiration • Pestel, Haiti • Rainwater Harvesting Systems

– Cisterns – Polytanks

• SODIS bags • Tippy Tap • IDE Drip Kits • Paul Polak’s divisible horse • Pigs

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Pestel, Haiti

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Pestel, Haiti

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Pestel, Haiti

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Pestel, Haiti

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Pestel, Haiti

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Other Storage Methods

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Sodis

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Tippy Tap

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Paul Polak’s Divisible Horse

Photo of pack horse carrying water cans removed due to copyright restrictions.

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Pigs

Photo courtesy of gurdonark on Flickr.

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Pigs

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Coming up… • Design Packet (v. 1.0) • Mini Project

– Information – Initial Ideas

• Project Selection (Mar 1) – Design challenge descriptions due for review by

Wednesday, Feb 17 – Slides due by noon on Wednesday, Feb 24

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EC.720J / 2.722J D-Lab II: Design Spring 2010

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