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113 GUIDES | 674 PAGES | 15 FEATURED | 4 POPULAR
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Dimmable Li-Ion Halogen Bike Light
Biking in the winter, or at night, is dangerous without a front light.
by lady ada
A good front-light is essential, not only for being seen, but to see the road. LED lamps will not illuminate the road, and they can be too dim for cars to see you (1W or better LEDs are quite nice as headlamps.) I offer here a simple (but high-quality) design to build your own 5 or 10W halogen lamp, which runs off of a rechargeable 7.2V or 7.4V Lithium Ion battery pack.
Matrix 2 Mod
Upgrading the Matrix2 Headlamp for Fun & Profit
by lady ada
We hand-upgraded a headlamp that requires 2 alkaline AA batteries to also work with 2 rechargeable NiMH batteries by replacing the lamp with a custom boost converter.
DIY Welded Bike Stand
For Fun & Profit
by lady ada
This projects is kinda fun, pretty easy so it's good practice if you're just learning how to weld, and is really useful after you're finished! For less than $50, you'll have a nice bike stand for repairing your bicycles.
Low Level Magstripe Reader
Swipe swipe...data!
by lady ada
To make a custom credit card swiper, we purchased a raw magstripe decoder head with track 1 reading. By writing some parity checking code, we were able to read the raw data off of the magstripe, and parse it into output that would be 'typed out' as an emulated keyboard using a USB-enabled Teensy.
Game of Life
Blinky fun cellular automata
by lady ada
In 1970, John Conway came up with a 1-player game called Game of Life. The Game of Life is a mathematical game that simulates 'colonies' that grow or die based on how crowded or lonely they are and is known for the way it creates a beautiful organic display out of randomness. Here is a design for a simple electronic project that plays Conway's Game of Life. Make one kit and keep it on your desk, or attach multiple kit modules together to create a large display.
Bedazzler
DIY non-lethal weaponry
by lady ada
Our first open source Homeland Security non-lethal weapon project - The "THE BEDAZZLER: A Do-it-yourself Handheld LED-Incapacitator".
Game Grrl
A portable Nintendo game
by lady ada
This is a design for a very simple, very inexpensive portable Nintendo gaming system with built in games. Theres no provision for cartridges, but its comfy to play.
Laser Cut PCB Stencils
How to Make PCB Solder Paste Stencils
by lady ada
This technique makes it easy to make basic stencils for SMT paste deposition. The stencils are cut from a thin plastic and last for 10-100 PCBs, great for prototypes!
Laser Custom Stamps
Create your own rubber stamp on a laser cutter!
by Becky Stern
Create your own rubber stamp on a laser cutter! Perfect for hackerspace passports, outgoing packages, and other fun stuff.
Furby 2012 Teardown
What's inside this hot toy?
by Becky Stern
There are a lot of fun sensors and interesting mechanics inside the new 2012 Furby, so we thought we'd take it apart and look inside.
FEATURED
Wave Shield Voice Changer
Speak like everyone's favorite baritone Sith lord or sing along with the Lollipop Guild!
by Phillip Burgess
Like a fine wine, open source projects improve with age. We've taught this classic shield a new trick: a realtime voice changer!
USB SNES Gamepad
Make a USB gamepad with an accelerometer inside
by lady ada
This project tutorial will show you how you can convert a console game pad into a USB keyboard mouse for playing games on your PC. The USB game pad can be used with nearly any software, such as a MAME emulator, game, simulation software, or for custom user interfaces. We will also show you how to add an accelerometer to the gamepad for tilt based gaming.
USB, DC & Solar Lipoly Charger
Power your projects from the sun!
by lady ada
Make your projects to go green this summer with our specialized USB/Solar Lithium Ion Polymer Battery charger! This charger is a very unique design, perfect for outdoor projects, or DIY iPod chargers. We've spent over a year testing and tinkering with this charger to come up with a plug and play solution to charging batteries with the sun and we're really pleased with what we ended up with.