FIGURE 3.
Good Vibrations
Fully utilizing the accelerometers
does come at a cost. Accelerometers are
very sensitive to the propeller vibration in
a multi-rotor craft. While these vibrations
are handled by the NAZA enclosure, the
same can't be said for the APM 2. 5.
You must add vibration control to
your craft before you can use the new
firmware. Failure to do so could lead to
your craft flying out of control.
You might be asking, what is
vibration control? This can be as simple
as adding foam rubber under the
controller or as complex as an isolation
platform on your craft.
I prefer the isolation platform
because it allows me to add other things
without having to worry about the
Boom Extensions
I talked about boom
extensions last month, and have
come up with several extensions
that will fit the Kronos Flyer
booms. These will allow you to
use various size motors, and
mount the motors on the top or
bottom of the extensions as
shown in Figure 5. While boom
extensions are not required,
they will allow you to use larger
props and motors. They also
look cool.
Landing Feet
Because I wanted to move
the battery off the bottom of
the craft, there is no longer a
need for the helicopter style
landing gear on the Kronos
Flyer. As a replacement, I
designed a set of small feet and
boom covers shown in Figure 6.
Again, these are optional, but
will keep the belly of your craft
off the ground for take-offs and
landings. They also provide a
good mechanism for attaching
foam for a more cushioned set
of landing pads.
FIGURE 5.
38 SERVO 04.2013
Isolation Platform
The real meat of the KFE
modular system is the
redesigned isolation platform
FIGURE 6.