Introduction: Yet Another Rechargable Light

this is a circuit that incorporates a capacitor, resitor, diode and an bright white led and uses a Lego motor and connector to charge the 1 F capacitor.

Step 1: Gather Materials

First, gather the parts you will need:
A 22 Ohm resistor (r,r,b)
a diode, 1N4007 ( or whatever you have)
a bright white led
5.5V 1Farad capacitor
push button switch
protoboard, or whatever its called (used to prototype circutits)

Unfortunately I forgot to take photos of the individuals parts, except the capacitor.

Step 2: Cannabalize Your Mindstorm

cut off one end of the a lego connector and wire one side to the 1n4007 diode, connect the unconnected leg of the diode to the negative side of the capacitor, and the other side of lego connnecto to the positive side of the capacitor. The diode will prevent the capactor from dumping its charge back to the motor.

Step 3: The Resistor Is Connected to the ...

Now connect the resistor to the positive side (longest leg) of the bright white LED, attach the unconnected side of the resistor to the positive side of the capacitor.

Step 4: The Negative Side of the LED Is Connected to The...

Connect the negative side of the bright white LED to the pushbutton. Then connect the other side of the pushbutton to the negative side of the capacitor.

Step 5: Connect the Connector to the

Now connect the lego connector to the lego motor( I have a big tire connected to the motor that I will add photos of) and spin. Spinning in one direction allows the tire to spin effortlessly, spinning the opposite direction will be met with resistance. That is the direction you want to spin the motor so as to charge the capacitor.

Comments

author
tealk (author)2013-06-08

how long can it last?

author
tealk (author)tealk2013-06-08

i mean how long can it light a led?

author
tealk (author)2013-05-12

and how much is strong power supply? can i recharge it with usb?

author
Sandisk1duo (author)2009-07-18

that is actually a protoboard

author
Ushanka (author)2006-12-19

Photos aren't always good. You could very easily have made a better schematic in MSPaint. C'mon, man.

author
rockyt (author)Ushanka2008-08-23

C'mon man what? get over yourself

author
stuuf (author)Ushanka2008-08-19

MSPaint? come on, get a real schematic capture program like gschem, or at least a generic vector editor like inkscape or dia.

author
rockyt (author)stuuf2008-08-20

boohoo! whatever works, thats what I say.

author
rockyt (author)Ushanka2006-12-21

Brutally honest, I like that. Check out newly uploaded circuit graphic and let fly with the suggest. Thanks,

author
Dzwiedziu (author)Ushanka2006-12-21

Yes, and that what I counted on: an electrical schematic, even in m$paint.

author
omkar_hummer (author)2008-08-23

for how much time will the the capacitor run on a single charge?

author
rockyt (author)omkar_hummer2008-08-23

Charged to full capacity and used intermittently, it remained charged for several weeks. By intermittently I mean, using only to find my way around the bedroom once the light were turned off and to find my way to the bathroom in the middle of the night. I'm not sure how long the charge will last if used continuously with out turning off. I haven't tried that.

author
Sandisk1duo (author)2008-01-17

were did you get the capacitor?

author
rockyt (author)Sandisk1duo2008-01-25

I'm pretty sure i got them from digikey.

author
Marcos (author)2006-12-19

Here's an edited version of the original image. rockyt, I love the idea of quick and dirty, if it's good, and legible. I encourage you to: - clean the extraneous dirt and crud off your whiteboard - redo the schematic, maybe make it a little more orderly, and compact. - reshoot, maybe in black and white, at 90 degrees to the board, using black, or dark blue markers. Meanwhile, here's a tweaked version, cropped and converted to greyscale.

FC91L3O9POEV2ZBK6K.medium.jpg
author
rockyt (author)Marcos2006-12-21

take a look now and let me know what you think

author
Dzwiedziu (author)rockyt2006-12-28

Muuuuuuuuuuuuuuuuch better :)

author
rockyt (author)Marcos2006-12-27

how is this for readable and understandability?

schematic.jpg
author
Dzwiedziu (author)2006-12-19

The schematic is completley unreadable.

author
rockyt (author)Dzwiedziu2006-12-27

new schematic uploaded, utilizing electronic symbols, also a new edited circuit graphic with negative, positive labeling and such. When you gonna publish an instructable?

author
rockyt (author)Dzwiedziu2006-12-21

I have uploaded a newly created circuit graphic. Take a look at it and let me know if this one is more readable. Thanks for your honesty.

author
Dzwiedziu (author)rockyt2006-12-22

It still isn't a propper electrical circut schematic, but it still is more readable, exept for the important details found on such schematics (polarization of the LED and capacitor), So if you can learn to make such schematics. They are FAR more readable for anybody that knows how to read them.

author
rockyt (author)Dzwiedziu2006-12-24

dude, figure it out. I'm doing this for fun, I'm not a professional. duh!!

author
rockyt (author)Dzwiedziu2006-12-19

ok, I'll submit a better schematic for you kids.

About This Instructable

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Bio: father, son, brother
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