experiments in sustainable industrial design

type 1 cardboard chair (laminated recycled cardboard)
type 1 cardboard chair top

type 3 cardboard chair (laminated recycled cardboard)

 

note: the type 2 chair was an attempt at a lawn chair style folding chair that never really panned out

type 3 chair side view, 

this design was some what less successful than the type 1, though both chairs will hold a person the type 3 proved a bit wobbly, I'm looking into an x shaped leg configuration for a possible type 4 chair 

ipod speakers closed 

(soda bottle bottoms, small speakers, cover board, zipper, mini jack cable)

These speakers use soda bottle bottoms as resonators for a pair of small speakers, which boosts their volume and bass response,  the bottle bottoms can also be zipped shut to create a protective shell for the speakers. These speakers are not electronically amplified, but give a good output employing their passive amplification and a standard headphone output signal . 

ipod speakers open

 

Type 1 can amp, a powered guitar amp housed in a 8 oz coke can featuring on/off volume and tone controls. In a similar manner to the ipod speakers the can is used as a resonator to amplify the volume and boost bass response, resulting in a surprisingly loud and not tinny sound. I've sold several type 2 can amps which have integrated tone on/off control to friends and have contemplated eventually some on my etsy site when ever I finish it...

type 1 can amp open, access to the battery pulling the spring loaded spkear off the top of the amp

dynamo flashlight,

 hand cranked led flashlight uses a large capacitor for energy storage  

(LEDs, bottom switch, pvc pipe fitting for the crank, inner component listed below in the guts section) 

dynamo flashlight activated,

 it may not look that bright but in a dark space it provides usable light for nearly 20ft (6m), and after being fully charged will last a little over 20 minutes.

dynamo flashlight guts

 (gear box, dc motor used as a generator, oscillator inverter power conditioner [electrical tape cover thing with wires coming out], and large capacitor [ hidden behind the generator])

keg can computer speakers (beer cans, salvaged speaker parts, bolts)