D-Lab
Spring
2010
Development through
Dialogue, Design and Dissemination
1
Today’s Class
•
•
•
•
Logistics
Charcoal Press Case Study
Technology Case Studies
Introduction to Mini Project
2
Logistics
• Project Selection (Mar 1)
– Design challenge descriptions due for
review by Wednesday, Feb 17
– Slides due by noon on Wednesday, Feb
24
3
“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
4
Fuel from the Fields
Charcoal Project
5
Forming Briquettes by Hand
6
Fragile Briquettes
7
Mechanized Briquette Maker
~$8,000
8
The First Prototype: ~$25
9
4 - 5 Briquettes/minute
10
Time Study
Cleaning, 17%
Eject, 42%
Load, 34%
Hammer, 24%
11
6 - 8 Briquettes/minute, $30
12
$30
$20
13
$20
$2
14
10 - 12 Briquettes/min
15
“If you want to make something
10 times as cheap, remove 90%
of
the
material.”
- Amy Smith
D-Lab Instructor
16
“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
17
“Everything should be made as
simple as possible, but not
simpler.”
- Albert Einstein
18
“Simplicity
is
the
ultimate
sophistication.”
- Leonardo Da Vinci
19
Now, Even Simpler
20
Design Mini Project
Affordable Rainwater
Harvesting
21
Background and
Inspiration
• Pestel, Haiti
• Rainwater Harvesting Systems
– Cisterns
– Polytanks
•
•
•
•
•
SODIS bags
Tippy Tap
IDE Drip Kits
Paul Polak’s divisible horse
Pigs
22
Pestel, Haiti
23
Pestel, Haiti
24
Pestel, Haiti
25
Pestel, Haiti
26
Pestel, Haiti
27
Other Storage Methods
28
Sodis
29
Tippy Tap
30
Paul Polak’s Divisible Horse
Photo of pack horse carrying water cans
removed due to copyright restrictions.
31
Pigs
Photo courtesy of gurdonark on Flickr.
32
Pigs
33
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
34
MIT OpenCourseWare
http://ocw.mit.edu
EC.720J / 2.722J D-Lab II: Design
Spring 2010
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