That said, this month we’ll be building a fantastic, custom robot chassis called Isotope. Isotope is similar to
other robots in that it has most of the same components.
What makes it Isotope are the two linear actuators from
Firgelli which are powered by the NXTMMX from
MindSensors, that allow the robot to extend and retract its
front wheels. This ability is both awesome (it looks a lot like
cars with hydralics) and functional (it allows Isotope to
maneuver difficult terrain).
This month, we’ll be putting together Isotope and
writing a very basic program to test it. Next month, we’ll
use a second NXT to create a Bluetooth controller for
Isotope which will make it easy to show off his awesome
functionality in any situation.
To purchase Firgelli linear actuators, visit Firgelli.com.
To purchase the NXTMMX and its battery pack, visit
Now, let’s get started!
Building Instructions: Isotope
First, build the assemblies shown here.
Prepare the L-bracket
which will help
Attach them to your Firgelli linear
actuators as shown, then grab two
11-hole studless beams and four
double friction pins, and prepare
them to attach.
Slide in the
in the last
Collect two nine-hole studless
beams, four double friction pins,
and four standard friction pins.
Attach them as indicated. You'll
notice that one side is off center.
This is intentional, and you'll find
out why shortly!
Attach your new
pieces to the front
72 SERVO 12.2011