Never before had we made anything with
humble servos that we thought could grievously
injure or maim us, but that’s exactly what we
accomplished here. The speed with which the servo
was able to swing around the axe was impressive
and intimidating. The axe was seriously sharp and
probably would have cleaved through fingers (or
more) with marginally more difficulty than the
Having the center of gravity of the axe
positioned so far away from the center of rotation
really enhanced the destructive capability of the
servo. It’s the same principle as spinning weapons in
combat robots — you want as much weight as
possible concentrated as far as possible from the
center of rotation. We were never able to put that
into practice with servos before because the lateral
loading on the servo spline was too much for the
horn or spline to handle.
With ServoBlocks, however, it’s like a whole new
world has opened up for the unassuming servo. The
force isolation works extremely well, and while the
ServoBlock does add some bulk to the servo, the
plethora of mounting points should still make it easy
to incorporate into your designs. The possibilities are
Knowing that we could upgrade a servo into a
Viking level warrior got us thinking about what else
we could do with ServoBlocks. We could take one of
those servo-based humanoid robots, outfit every
servo with a ServoBlock, and really give it a Tetsujin-style exoskeleton.
We could make actually destructive combat
robots using nothing but servos. We could delegate
all salad chopping duties to an axe equipped robot.
As we write this, we’re wondering just how many
ServoBlocks the humanoid robot exoskeleton would
The ServoBlocks really exceeded our
expectations. It’s rare to find something so easy to
build and use that has such a dramatic effect on
performance. It has an effective elegance that we’re
sure the Vikings would have loved. SV
SERVO 01.2018 59
SALAD IS SERVED.
ROCK, PAPER, SCISSORS, CUCUMBER, AXE.
OFF WITH HIS HEAD!