The Kronos Flyer is sized to use a
three-cell 2,200 mAh lipo battery.
The battery (shown in Figure 9) is a
Turnigy nano-tech battery. These give
you the best bang for your buck for
this size craft. The connector will
plug directly into the power
• Turnigy nano-tech 2,200 mAh
3S lipo pack: HK#
• Turnigy Accucel- 6 6A charger: HK# ACC6
These are available at both the Hobby King US and the
I recommend getting these from the US warehouse as they
cannot be shipped via air from the international warehouse.
I also recommend you order at least three of these. To charge
the batteries, you need a quality balancing charger. The Accucel
six amp charger gives you a great deal for the money. You will
need a 11-17V DC supply to power the charger.
In addition to the batteries and charger, I recommend you
purchase a battery monitor. The battery monitor shown in
Figure 10 plugs into the balance port of your battery. It keeps an
eye on your battery while in flight, and will flash LEDs if any cell
drops too low. If you keep flying, a very loud alarm will sound,
warning you to land.
• Onboard lipoly low voltage alarm: HK# 067000002
Note that this can only be ordered from the Hobby King
48 SERVO 12.2012
Last month, I mentioned three flight controllers I would
be looking at:
• Hobby King KK2 flight controller
• Multi Wii SE V2.0 flight controller
• DJI NAZA flight controller
It's time for you to decide on the flight controller you
are going to use for your Kronos Flyer. Let's take a look at
each in detail.
MultiWii Flight Controller
I have yet to get my Multi Wii board (shown in
Figure 11) programmed and tuned enough to control any
of my multi-rotor craft. I spent several days researching and
reading several forums on this controller, and it seems I am
not alone in failing to get it set up properly. That's not to