Main.YangsCoinPurse History

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February 17, 2010, at 12:50 PM by 18.111.63.76 -
Added lines 17-22:

http://web.mit.edu/yang2/www/newTextiles/coinPurse/5.JPG

Yay it works! :D (a possibility for playing with LED light levels too!)

Problems: there are some... coming soon

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February 17, 2010, at 12:44 PM by 18.111.63.76 -
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The problem I came across is that I wanted the LEDs to be OFF when the switch is on (snaps snapped together, and circuit is closed) and the LEDs to be on when the switch is off (snaps apart, and circuit is open).

to:

The problem I came across is that I wanted the LEDs to be OFF when the switch is on (snaps snapped together, and circuit is closed) and the LEDs to be on when the switch is off (snaps apart, and circuit is open).

http://web.mit.edu/yang2/www/newTextiles/coinPurse/3.JPG Some first ideas to do this was to create a short-circuit (bad idea!) and use the button as a circuit breaker.

http://web.mit.edu/yang2/www/newTextiles/coinPurse/4.JPG This is what actually ended up in the coin purse. (Thanks Prof. Horowitz!)

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February 17, 2010, at 12:31 PM by 18.111.63.76 -
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http://web.mit.edu/yang2/www/newTextiles/coinPurse/2.JPG

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http://web.mit.edu/yang2/www/newTextiles/coinPurse/2.JPG

The main idea behind this project is to use the snap (or any purse closing mechanism) as a switch, opening and closing a circuit that in turn acts on the LEDs.

The problem I came across is that I wanted the LEDs to be OFF when the switch is on (snaps snapped together, and circuit is closed) and the LEDs to be on when the switch is off (snaps apart, and circuit is open).

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February 17, 2010, at 11:13 AM by 18.111.63.76 -
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Project Description

to:

LightUp Coin Purse

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A small coin purse that lights up when it is open, and lights out when it is closed.

to:

This small coin purse lights up when it is open, and lights out when it is closed.

http://web.mit.edu/yang2/www/newTextiles/coinPurse/2.JPG

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February 17, 2010, at 11:03 AM by 18.111.63.76 -
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February 17, 2010, at 11:03 AM by 18.111.63.76 -
Changed line 2 from:

http://web.mit.edu/yang2/www/newTextiles/coinPurse/1.jpg

to:

http://web.mit.edu/yang2/www/newTextiles/coinPurse/1.JPG

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February 17, 2010, at 10:57 AM by 18.111.63.76 -
Added line 2:

http://web.mit.edu/yang2/www/newTextiles/coinPurse/1.jpg

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February 17, 2010, at 07:45 AM by 18.111.63.76 -
Added lines 1-3:

Project Description

A small coin purse that lights up when it is open, and lights out when it is closed.

Restore