This controller is
designed for a 1-12
pound combat bot. It can
run at 12 amps per
motor with a peak of 25
amps. The hookup could
not be simpler: Two
connectors plug into your
RC receiver; your motors
and battery connector
attach to the provided
The motors shown in
Figure 7 are 300 RPM
12V motors. They have a 600 mA rating with no load. They
are a perfect match for our PBOD when using a 3s LiPo.
The motors don’t come with wires attached, so we will
For the motors mentioned previously, a small 850 mA
three-cell LiPo (Figure 8) is a perfect match. It gives us a
long run time and is tiny enough to fit into the smallest
of space. It also has enough to power our weapon
system. A small adapter may be needed, depending on
the controller hookup we choose.
For the RC radio, I’m using the Tactic radio system.
This is an inexpensive 2. 4 GHz RC radio system. The
standard receiver for both the four- and six-channel
transmitters is the six-channel TR624 shown in Figure 9.
For the transmitter, I’m
using the radio shown in
You may have noticed
it’s a Futaba radio. Tactic has
a device called an AnyLink.
It’s designed to allow you to
use an older radio (any
brand) with a Tactic receiver.
It connects to your
transmitter via the trainer
port. In my case, it plugs
directly into my old six-channel 72 MHz radio
(Figure 11). I have removed
the original antenna and
crystal, so it’s only using the
controls on the radio.
The AnyLink is a six-channel transmitter, so when
it is plugged into a six-channel radio, you gain
access to all the channels.
In truth, you can use just about any 2. 4 GHz system. If,
however, you have an old analog radio, the Tactic receivers
are only $20 each and the AnyLink adapter is only $25.
SERVO 11.2013 45
Figure 7. Figure 8.