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Vol. 23: Gadgets
In this special GADGETS issue, we show you how to make a menagerie of delightful machines: a miniature electronic Whac-a-Mole arcade game, a tiny but mighty see-through audio amplifier, a magic mirror that contains an interactive animated soothsayer, a self-balancing one-wheeled Gyrocar, and the Most Useless Machine — the creepy mechanical box whose only purpose is to turn itself off (as seen on The Colbert Report!). Plus: how Intellectual Ventures made their incredible laser targeting mosquito zapper, how to use the industrial-strength microcontrollers called PLCs, and a lot more. On newsstands now! ? BUY OR SUBSCRIBE
In This Issue
Video Preview
Take a tour of Volume 23 with the editors of MAKE.
Digital Edition
Table of Contents
See what's in this issue
Welcome
Reader Input
Making Trouble
Make Free
Made on Earth
Country Scientist
Maker's Corner
Maker
123
Primer
MakeShift
Electronics: Fun and Fundamentals
Toy Inventor's Notebook
Howtoons
Workshop
Aha!
Heirloom Technology
Remaking History
Make Money
Homebrew
MORE
Highlights from Recent Issues of Make
Projects
The Mystery Switch
Make a mysterious electronic switch that only you know how to light up! Thanks go to J. Tregre for...
Lily Pad Pool Warmers
Use hula hoops to keep your swimming pool warm year-round using the sun. Thanks go to Edward Hujsak for...
CD/DVD Parts Container
A cheap and easy way to organize parts of all sizes. Thanks go to Steve Stofiel for the original...
Easy Pitch Control Hack
Make audio circuits sing higher and lower. Thanks go to Peter Edwards for the original article in MAKE, Volume...Contests and Puzzles
MakeShift
Download a PDF of the current MakeShift scenario, or go here to see past winners, and read previous challenges.
Volume 23: Crash! ... and Burn?
Volume 22: Snowbound!
Aha! Puzzles
Download a PDF of the current Aha! Puzzle, or go here to read puzzles from past issues, including the answers!
Volume 23: Gadget Brothers Reunion
Volume 22: Spy Games
Downloads & Extras
All the stuff you need to build the projects in MAKE, and exclusive online features direct from the staff of MAKE.
Volume 23 ? Volume 22 ? Volume 21 ?
Connect with Make
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Other Issues
Current Discussions
Join the conversation - many MAKE articles have an online page that includes a place for discussion.
Squelette, the Bare-Bones Amplifier -- 830ohm, 1/2w resistor
The author here. That must be for the LED circuit, right? There's no 830 in the audio circuit....
Squelette, the Bare-Bones Amplifier -- 830ohm, 1/2w resistor
Anyone know where I can find the 830ohm, 1/2w resistor needed for the project? I've done some se...
Lawnbot400 -- Bussed resistors
So what motor did you purchase from allelectronics.com? ...
Squelette, the Bare-Bones Amplifier -- Mini Chip Amp
Oops. I meant peak voltage = rms X 1.4 = 9.36 X 1.4 = 13....
Squelette, the Bare-Bones Amplifier -- Mini Chip Amp
BTW, the math for current in an amp output is A = sqrt(P/R) where A = current in amps, P = power in ...
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