Make: Online : DIY LED Flashlight

DIY LED Flashlight

AntonOlsen writes "This is an easy to build dc-dc switcher that can drive quite a few LEDs at 3.3V with a single AA battery. Version 1 is going in a mini mag light and I'm thinking version two will make a very light weight bike light." [via & instructions] Link to photos.

Related:

Comments

Oldest comments listed first.

Posted by: Fub on January 28, 2006 at 8:05 AM

It's a pity that the MAX756 is outdated - none of my regular online electronics shops carry it. The improved versions are all very, very small which makes it hard for the casual hobbyist to create this circuit.

Reply to this comment

Posted by: cnuwer on January 29, 2006 at 9:46 PM

The 'LED Museum' has been around for a long time for those integrating LED's and flashlights. Worth a look, if you have not seen it...

http://ledmuseum.home.att.net/ledleft.htm

Reply to this comment

Posted by: nil0lab on December 7, 2007 at 5:00 PM

Fub: they can't be that old, halted.com doesn't seem to carry them. Looks like MAX756CSA+ is current: http://www.newark.com/jsp/Semiconductors+&+Prototyping/Power+Management+ICs/MAXIM+INTEGRATED+PRODUCTS/MAX756CSA+/displayProduct.jsp?sku=23K6506&_requestid=144115

Perhaps you were hit by a temporary RoHS (lead-free) changeover issue.

Reply to this comment

Subscribe to MAKE Magazine!

Subscribe today, save 42% and get web access to MAKE free. MAKE Digital Edition is available only to subscribers.

$34.95 / 1 year
(4 Quarterly Issues)

Subscribe now

Void your warranty, violate a user agreement, fry a circuit, blow a fuse, poke an eye out. Make: The risk-takers, the doers, the makers of things... Welcome to Make: Online!

Check out all of the episodes of Make: television

Connect with MAKE

	MAKE on Facebook Visit our Facebook page and become a fan of MAKE!
	MAKE on Twitter Follow our MAKE tweets!
	MAKE on Flickr Join our MAKE Flickr Pool!

make_tips on Twitter

MAKE's RSS feed is here.
Add MAKE to iGoogle - GoogleGoogle.
How to add MAKE to your RSS reader - Real simple.
Add MAKE on FriendFeed

Why advertise on MAKE?
Read what folks are saying about us!

Click here to advertise on MAKE!

MAKE wins Treehugger Best of Green Award

Make: Online authors!

Gareth Branwyn, Chris Connors (guest author), Collin Cunningham, Marc de Vinck, Peter Horvath (intern), Kip Kay, Goli Mohammadi, John Park, Sean Ragan, Becky Stern, Phillip Torrone

Suggest a Site!

Current Podcast

How-To Tuesday: Arduino 101 & the PING))) ultrasonic sensor The PING))) ultrasonic sensor is a really easy way to measure distance with a micro-controller. All you have to do is hook up 3 wires and upload some code. These sensors are great for robots, alarm systems, or any... More...