SERVO Magazine - April 2014

Invasion Of The Drones


Features

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No PC and You Need to Code Your LEGO EV3? No Problem!
by Dave Prochnow
Baked inside each LEGO MINDSTORMS EV3 Brick is the ability to code primitive programs. See how to use it to perform rapid prototyping “sanity checks.” Page 57

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MF70 Micro Mill CNC Conversion
by Michael Simpson
3D printers are great for prototyping, but nothing beats the consistency for milling multiple parts like a CNC router or milling machine. Here’s how to have one on the cheap. Page 60

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The Robot Emoticon
by L. Paul Verhage
Give your robot a happy face — or whatever look you’d like — with LED arrays. Page 68

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The Movie ‘her’
by Joanne Pransky
The movie 'her' (and yes, they purposefully use a lower case h) brilliantly tells the not-too-futuristic story of a biological male who falls headphones over buffering wheels in love with an artificial intelligent (AI) operating system. Page 72

Projects

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How to Mount Motors and Wheels to Your Robot

by Gordon McComb

So, you’ve got a nice robot base. You’ve dug up some motors and wheels that you think will be perfect. Now what? Just exactly how do you attach the darn things? Page 38

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Nuntius — The Garden Avenger: Part 2

by David Dorhout

Details of the build process are explained for the robot and the controller, plus take a closer look at the software for this telepresence platform. Page 46

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TheoBot — A DIY StrandBeest Walker

by Eric Ostendorff

Similar to last month’s SpiderBot hack, see how to take a $10 kit and turn it into programmable bot with a mesmerizing walking action. Page 52

Columns

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Ask Mr. Roboto
by Dennis Clark
Your Problems Solved Here (04.1014)
Questions on walking robots, bipedals in particular. Page 08

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Twin Tweaks
by Bryce Woolley, Evan Woolley
Weapons of Bot Destruction
Our favorite hackers continue the revival of their combat bot by reinventing the spinning weapon. Page 12

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Then and Now
by Tom Carroll
Drones
Bad press, misunderstood information, and abuses of power continue to bring controversy to this otherwise useful technology. Page 76

Combat Zone

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BUILD REPORT: Spanky Part 1: A Combat Robot Platform
in Combat Zone: Features
Spanky is the newest robotic member of Near Chaos Robotics. Spanky was designed with two events in mind: DragonCon Robot Battles — an open platform Sumo style event; and the Sportsman class at Motorama — an event with a full arena. Page 28

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Pushing Power: How Strong is Strong Enough?
in Combat Zone: Features
This month, we address the other variable: torque. In terms of robot combat, torque is our fancy word for pushing power. Page 31

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BUILDING TIPS: Balancing a Weapon Bar
in Combat Zone: Features
I frequently get asked about balancing weapon bars, and figured a simple guide might be helpful. Page 33

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BUILD REPORT: New Builders, Beware!
in Combat Zone: Features
Here are some tips to avoid some common pitfalls at your first competition. Page 35