SERVO Magazine - February 2009

MEGABOT “Aspires” To Move
Using A Laptop for your Robot’s Brain


Features

Read the Digital Edition (subscribers only!)

Build The Ultimate Robot: Part 5
by Michael Simpson
If you are building the Megabot or a similar robot, you should have the base assembled at this point. In this article, we are going to add the electronics that will make our robot move. I’ll show you the techniques I used so that you can apply them to your own design... Page 34

Read the Digital Edition (subscribers only!)

An Introduction to Pneumatic Sytems | Part 2
by David A. Ward
Now that the basic pneumatic system is operating manually, let's add some electronics to control it. If we add an electromechanical relay and two limit switches, we can make the piston travel back and forth continuously; check out the electrical schematic in Figure 1. The limit switches being used are momentary SPDT miniature switches (Photo 1) and the electromechanical relay is a DPDT 24 VDC coil relay with a socket (see Photo 2). By adding electrical limit switches at the fully retracted ... Page 41

Projects

Read the Digital Edition (subscribers only!)

BLDC Hardware | Part 3

by Fred Eady

It's time to get cerebral with our BLDC motor project. However, before we transition our fingers from spinning the BLDC motor shaft to tapping out some BLDC motor code, I have a confession to make. Before I relate my experiences, though, let's have a moment of silence for the fallen Microchip TC4428 and Fairchild NDS9952A parts that are littered all over my workbench under a cloud of "magic smoke.” Page 45

Read the Digital Edition (subscribers only!)

Implementing a Digital PID Controller on the PenAeroBot

by Carlos Montesinos, Ricardo Toro

Our philosophy at the Control Systems Laboratory at the University of Illinois is to teach students through interacting and experimenting with their own designs. In our lab, we continuously develop experiments to implement the theoretical concepts learned in class. One of the projects we are currently developing is the Pendulum Aeronautic Robot (PenAeroBot). This system is an inverted pendulum and the idea is to control its angle of inclination, propelled by two motors... Page 52

Read the Digital Edition (subscribers only!)

A Practical Quadrature Encoder

by John Blankenship, Samuel Mishal

Building projects involving electronics and robotics is much easier today than in the past because many of the commonly needed subsystems are available as ready-to-use modules (we will call them HMs [helper modules]). For example, there are HMs for controlling nearly any type of motor (DC, stepper, servo) and HMs to collect environmental data (humidity, temperature, distance to objects). You can find switching power supplies, battery chargers, Bluetooth modems, and dozens more just by looking... Page 59

Columns

Read the Digital Edition (subscribers only!)

Robytes
by Jeff Eckert
Stimulating Robot Tidbits
These tasty treats are big (up to seven inches [18 cm] long), fast (able to travel 1 cm/sec through wet sand), and highly desired for food (clammers are generally limited to 15 per day and must keep the first ones caught, regardless of size or condition). But as of lately, Pacific razor clams are of particular interest to Anette "Peko" Hosoi, an associate professor in the Department of Mechanical Engineering at MIT (www.mit.edu), for different reasons.... Page 08

Read the Digital Edition (subscribers only!)

GeerHead
by David Geer
Do Robots Scream for Ice Cream?
With two KUKA KR3 6 axis arms, an ice cream machine, a PLC, touch panel, toppings dispensers, and a camera and vision software, the team erected a fully robotic ice cream machine that vended scoops and toppings to about 500 customers in three days. (Now, that is how to make a popular robot!). The goal of the robotic construction was a unique demonstration of a computer vision controlled robot that constitutes a framework for developing strategies for bin-picking, which is a popular objective... Page 10

Read the Digital Edition (subscribers only!)

Ask Mr. Roboto
by Dennis Clark
Ask Mr. Roboto | February 2009
Your Problems Solved Here. Page 14

Read the Digital Edition (subscribers only!)

Robotics Resources
by Gordon McComb
Building A Robot? Don’t Forget LEGO!
Take the Wayback Machine to about 2001 and you'll see thousands of eBay sales, hundreds of websites, and dozens of books on LEGO robotics. While the giddy heyday of the LEGO robot has come and gone, it's still a viable — and fun! — platform for learning all about desktop automatronics. What's more, publishers keep coming out with new and improved books on the subject, and the websites devoted to robotics and LEGO continue to be an active, if not mature, community of like-minded enthusiasts... Page 68

Read the Digital Edition (subscribers only!)

Beginner Electronics
by William Smith
Introducing the AtomNano
Many years ago, Basic Micro, Inc. introduced the Basic Atom modules to compete with other popular modules. Basic Micro still offers the Basic Atom modules and the interpreter chips they’re based on. Now, Basic Micro is introducing the AtomNano which is similar to the PICAXE and it has many additional features. I've only seen a beta version of the chips; they are very similar to the Atom interpreter chips but at a much lower cost. Let’s take a look at the new AtomNano. Page 72

Read the Digital Edition (subscribers only!)

Then and Now
by Tom Carroll
Robots: From Nano to Tiny to Small
I take a lot of magazines — most to keep abreast of a broad range of technical subjects — but I rely on Forbes for business and financial articles, at least until the November 12th issue. An article in the issue, “Interview With A Cyborg” by Courtney Myers caught my eye. I had heard bits and pieces about Kevin Warwick's experimentation with cybernetics and the implantation of a 100 electrode array that he had in his arm back in 2002. (Figure 1 shows Warwick with his 'bionic' hand controlled... Page 76

Combat Zone

Read the Digital Edition (subscribers only!)

Building a Better Battery System
in Combat Zone: Features
My 12 pound combat robot Scurrie was designed to use two battery packs that werre physically and electrically separate from each other. Page 22

Read the Digital Edition (subscribers only!)

Creative Armor: Sandwiching with Shock Mounts
in Combat Zone: Features
When building a combat robot, one of the first problems you encounter is how to protect it. Page 24

Read the Digital Edition (subscribers only!)

Halloween Robot Terrior
in Combat Zone: Events
long! As soon as the doors are unlocked at 10:00 AM, the evil known as the Halloween Robot Terror and Bot Costume contest will be unleashed on the world … BWUHAHAHAH !!!! Page 26

Read the Digital Edition (subscribers only!)

Roaming Robots UK Winter Tour Final - 2008
in Combat Zone: Events
The competition that began in Portsmouth and moved north to Nottingham finished back on the south coast in Maidstone in front of capacity audiences, with 1,200 people attending two shows. Page 28

Read the Digital Edition (subscribers only!)

Tourinho
in Combat Zone: Robot Profile
Tourinho has competed at RoboGames 2007, Winter Challenge 3 ENECA - Recife, 7 ENECA - Recife, and Winter Challenge 4 ENECA - Recife. Page 30

Read the Digital Edition (subscribers only!)

Screwdrivers: Straight Up
in Combat Zone: Features
This month, we are reviewing two cordless screwdrivers from Bosch. Page 31

Departments

Read the Digital Edition (subscribers only!)

Symbiotic Robots
by Bryan Bergeron in Mind / Iron
Symbiosis — an association of mutual benefit — is a popular strategy for survival in the biological world. Think humans and normal intestinal bacteria, the common behavior of smaller fisher cleaning larger fish, or even the seemingly fearless Egyptian plover bird that feeds on the leeches attached to the gums of a crocodile. Now, imagine how symbiosis could be useful in a large, 'host' robot — say a planetary rover. Wouldn't it be useful to have relatively small, internal robots that monitor.. Page 06