Page 336 - Robot Builder's Bonanza

TWO- MOTOR BASICBOT 305

5"

1-1/8"

1-1/8"
3/4"
1-3/8"

Figure 26- 5 The BasicBot uses one or two decks, a 1-7/8"
Tamiya Twin Motor gearbox kit, a set of small tires,
and a ball caster for balance. Construction takes less Figure 26- 6 Cutting and drilling layout for the
than an hour. BasicBot. All holes are 1/8″.

ADDING A SECOND DECK
The one- deck BasicBot has room for a small microcontroller board, mini solderless bread-
board, and a four- cell AAA battery holder. You can increase the area of the BasicBot if you
need more space. Make a second deck with another 5″-diameter circle. Drill matching holes
in both the bottom and the second deck. Use 1″- or 1- 1/2″-long metal or plastic standoffs to
act as “risers” to separate the two decks.

Figure 26- 7 Underside of the BasicBot,
showing the twin motor gearbox and ball
caster.

26-chapter-26.indd 305 4/21/11 11:52 AM