Page 324 - Robot Builder's Bonanza

USING READY- MADE SMA MECHANISMS 293

.com), which sells their wares through their own site plus a network of worldwide distributors,
such as RobotShop and SparkFun.
Figure 25- 7 shows the Miga Motors Dash, an SMA linear actuation that provides an aston-
ishing 1.75 pounds of output force and a 1/4″ stroke. It’s intended for such applications as
electronic door locks, but it has obvious uses in robotics as well, such as moving legs in a walk-
ing bot. Likewise, rotary SMA actuators can be used in place of servo motors in many applica-
tions. They’re spring- loaded, so once current is removed, the actuator returns to its starting
position.

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