SERVO Magazine readers are well aware of the
magnetic circuit building power of littleBits
(see articles in the November 2014, December
2014, and February 2015 issues). Similarly,
readers are also knowledgeable of the
structural capabilities of the Actobotics
modular aluminum building system, as there
have been countless articles on these parts, as
well. (In fact, Actobotics is mentioned in several
places in this issue.) Curiously, using magnets
with aluminum doesn’t appear to be a very
and the ActoBitty
SERVO 06.2015 51
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By Dave Prochnow
Remarkably, both of these seemingly divergent systems do play nice together. The result of
this union is ActoBits, described here.
First of all, let’s be up front and clear
here: The littleBits magnets are not used
for fastening the modular control system
to the aluminum channel. The magnets
are used for attaching each of the
littleBits modules together into a simple
light sensor based robot control system.
These sensors, in turn, control the two
ActoBitty motors which cause our robot
to either steer towards light, or avoid
light and seek darkness instead.
Choosing the robot’s light reaction
behavior is easy with this simple