battery and two to the motor) on the motor drivers use
convenient screw-down connectors. A power switch was
also mounted at this end, along with a small 18 amp circuit
breaker (or fuse) for when/if things go wrong.
The Arduino Nano Controller PCB
Both the Arduino Nano controller board and the
Arduino Nano joystick board are laid out on a single
ExpressPCB MiniBoard. ExpressPCB
( www.expresspcb.com) will produce three of these
MiniBoards for about $65. You might want to share the
cost with a couple of friends. After receiving my boards, I
cut the two apart, having left space for this in the layout.
This controller board contains the Arduino Nano, and
the connections from its pins to the headers where jumpers
make connections to the motor drivers. A 7805 five volt
Figure 2. Electronics package without the Arduino controller
Figure 3. Close-up of the motor driver boards.
Figure 4. Close-up of the video camera and power relay.
Figure 5. Close-up with the Arduino controller board and
jumpers to the motor drivers.
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SERVO 04.2016 37
Figure 6. The Arduino controller boards without optional
Adafruit 9DOF board.