023_idealhouse_diagrams

022_dailyinflatewind_01

021_bottanicalgardens

i love carl (zeiss):

020_idealhouse_15_CYLINDER_FLAT_a

second in a series, refinement of this.

019_hourlyfoldingwater_5

018_idealhouse_13_SPHERE_VERTICAL_WIND

017_idealhouse_12_CYLINDER_VERTICAL_WIND

016_idealhouse_11_SPHERE_FLAT_WIND

015_idealhouse_10_CYLINDER_FLAT_WIND

014_idealhouse_09_CYLINDER_30DEG_HEAT

013_idealhouse_08_CUBE_VERTICAL_LIGHT

012_hourlyfoldingwater_4

back to hourlyfoldingwater this week.

011_seasonalrotatinglight_2

• Solar cells
• Function: Produce a current through coiled COPPER WIRE, to spin a shaft with MAGNETS on it to wind up a SPRING.
• Constraints
• Need to pick a cell which either independently, or wired together, puts out proper voltage for arduino and minimal switching. Also charge battery(s) to operate through night.
• mA: sufficient to charge battery to ideal capacity for night operation (mA * 6 hours?)
• Possibilities (http://www.futurlec.com/Solar_Cell.shtml):
• 1V 415mA 60mm x 60mm x 2.8mm $3.90 25+ $3.60
• 2V 80mA 58mm diameter circle $1.90 25+ $1.70
• 9V 70mA 85mm x 69mm x 2.5mm $6.90 25+ $6.40
• Batteries:
• Function: large enough capacity/voltage to run arduino from sunset to sunrise.
• Constraints:
• Voltage: needs to power arduino (9v? do smaller arduinos like this: http://www.sparkfun.com/products/9219, spec sheet: http://www.sparkfun.com/datasheets/DevTools/Arduino/Arduino-Pro_328-v13.pdf) run at lower voltage? that spec sheet lists max input but not minimum
• Capacity: needs to make it through the night
• Possibilities:
• 10000 mAh D cell rechargeable batteries x8, $56.99
• Cool, but big, and requires a lot (4 tor 6v? See earlier arduino voltage questions) to get up to operating voltage of an arduino http://www.amazon.com/pieces-250mAh-capacity-rechargeable-Battery/dp/B001CON7PS/ref=sr_1_4?ie=UTF8&qid=1316303503&sr=8-4
• 250 mAh 9v 250mAH $18.99 + 5.49
• runs at 9v (nice!) but small capacity, may be alright as our arduino is just keeping track of time and flipping 2 H switches?
• 2000mAh AA x16 (Sanyo Eneloop), $38.95
• same as D cells, but when wired together to get proper voltage wouldn't take up as much space
• Magnets:
• Function
• Day: respond to current in coil to rotate shaft, winding up spring
• Night: produce current in coil, winding
• Constraints
• size, power (n48? n52?) volume of magnet * strength would presumably affect how much charge is created, or how much the shaft spins in response to the current.
• Possibilities
• just a source for now, wide range of neodymium magnets for consideration as above questions are answered http://www.amazon.com/gp/browse.html?ie=UTF8&marketplaceID=ATVPDKIKX0DER&me=A1T24Q2YX26SWS
• Spiral Torsion Spring
• Function
• Store mechanical energy produced by the winding of the shaft
• Constraints: Optimization problem between the 2 (opposing?) requirements:
• winding force not excessive in relation to force generated by shaft/magnet/coil assembly
• capacity to store sufficient energy for Y pulses of Z duration.
• Possibilities: something topologically similar to this, but probably much less beefy: http://www.ebay.com/itm/STEEL-SPIRAL-TORSION-SPRING-6297411-/310269805275#vi-content also see http://www.springsandthings.com/pdf/spiral-torsion-springs.pdf (may require gearing for our puny widget to wind?) edit: more like this http://upload.wikimedia.org/wikipedia/commons/2/2e/Alarm_Clock_Balance_Wheel.jpg
• Arduino
• Function
• Night: sense body/movement/heat(pick 1) below widget
• IF true, THEN close switch, completing circuit, providing power to actuate pawl to release so that ratcheted spring can unwind X seconds, spinning shaft, producing current in coil
• Day: sense voltage from solar cell
• IF V < min. operating voltage + 1, THEN flip (H-switch?) switching power circuit from solar cell to battery

010_idealhouse_07_CYLINDER_60DEG

009_idealhouse_05_PYRAMID_FLAT

008_idealhouse_03_SPHERE_60DEG

007_seasonalrotatinglight_ENGINEERHELP!!!

We don't have an engineer!

If we know our arduino runs at 7-12V, using 200mA, if we want to run off battery power for 8 hours, how many mW do we need it to be rated for?

http://ebtx.com/mech/ampvolt.htm

is it as simple as:

watts= 8 hours (200mA * 12V)

Appreciated!

006_seasonalrotatinglight_1

005_idealhouse_02_SPHERE_30DEG

004_idealhouse_01_SPHERE.FLAT

setup:

projecting:


dance:
a




last one!


digital project:

003_hourlyfoldingwater_3

idea for folding paper screen. in video every 'pixel' is turning on and off, but in built form they would be individually controlled via arduino to convert text into pixel/rasterized form

edit: video fixed

002_hourlyfoldingwater_2

001_hourlyfoldingwater_1