Building the Controller
We’ve done Bluetooth remote control before
for Eddie 2.0, but Isotope is a bit more complex.
It will require a controller that’s more advanced.
Mainly, we need a way to control both the
robot’s directional movement (forward,
backward, left, right) and the linear actuators
which allow Isotope to crawl over difficult
For directional movement, we’ll use the NXT
buttons like we did back in The NXT Big Thing
#11. For each linear actuator, we’ll add a motor
to our remote control. On each motor will be a
gear, and spinning that gear will adjust Isotope’s
actuators. With that in mind, let’s rock ‘n roll!
Building Instructions: Remote
Start with two NXT
motors, and snap in
eight standard friction
pins as shown.
Attach a nine-hole
studless beam to
connect the two
Snap on an L-bracket with two
standard friction pins. 3.
Re-orient the assembly so
you can see the other side. 4.
Slide in four three-stud
axles as shown. 5.
Secure the axles, then
add four standard
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