Instructables

Lego hand crank flashlight

This is super easy to make and woks supprisingly well!
its pretty cool
 
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Step 1: Pats

Here's The things you need:

1.Lego Mindstorms motor

2.a few lego parts

3.short lego cable

4.an LED

Step 2: Attatch the cable

Put one end on the contacts, and the other end on the bottom of the motor.

Step 3: Attatch the crank

stat with putting a 90 degree angle "attacher thingy" (I know,very technical lingo) on the end coming out of the motor. then attatch a "stick" the another "attatcher, then another "stick"

Step 4: LED

Attatch the LED by pulling the leads appart, then wedging it in the bottom of the block on the side free side of the wire. each lead should be toutching the contacts diagonal from eachother

Step 5: Done!

thee you go just crank itand it should work, if not, crank it the other way
mikemike7 years ago
You know I love these lego cranks using the motors cuz' i have 13 of em' and have no use for them :D...nice design
you mean you stopped building robots?
xiaochou7 years ago
Just a thought from a newbie: I wonder if anybody has thought about trying to accomplish the same thing with an old fishing reel by basically making the reel a generator/motor, adding a capacitor/battery, etc. May be a great gift for all those fishin' buddies out there.
make an instructable on that!
Fat Bagel7 years ago
thats a great idea to use a fishing reel it could work really well
labp22197 years ago
i love legos and i love LEDs this is
the best thing i have ever seen!!!
Ian017 years ago
Axle. Angle connector.
LasVegas7 years ago
Crank the other way, or reverse the LED. Try putting in two LEDs of different colors and opposite polarity. Then you get a different color depending on which way you crank the motor.
admanrocks (author)  LasVegas7 years ago
Ya thats a geat idea, i didn't think of that
Elastometer7 years ago
Nice little Instructable! I fancy having a go at this and maybe adding a capacitor battery and substituting the yellow led for a blue one. Cheers for that!
VIRON7 years ago
nice. I have a similar instructable project but not with lego.