Page 180 - Amphibionics : Build Your Own Biologically Inspired Robot

Amphibionics 05 3/24/03 8:44 AM Page 159
Chapter 5 / Serpentronic: Build Your Own Robotic Snake
microprocessor with isolation from the noise introduced by the
direct current motors in the servos. It also allows the robot to run
for a much longer time because the microcontroller can keep oper-
ating from the 9-volt supply, even if the 6-volt supply drops down
to 4 volts. The servos are capable of operating at lower voltages,
but if the PIC’s supply drops below 5 volts, it will go into a reset-
ting loop. By powering the microcontroller with its own 9-volt
source, this problem is eliminated.

Table 5.6 is a list of all the parts needed to complete the wiring of
the robot snake.

Part Quantity Description TABLE 5.6
List of Parts Required
Connector wire 1 3 feet
to Wire the Robot
Battery straps, 9-volt type 7 Battery straps with 8-inch
leads

DPDT switch 1 Double-pole double-throw
switch
Push button switch 1 Momentary contact switch
12-inch servo connector 3 Male and female
extension connectors
2-connector female header 1 2.5-mm spacing

1-connector female header 1 2.5-mm spacing

1-K resistor 1 1/4-watt
Rubber grippers 14 Sticky backed nonslip
rubber
AA battery 12 1.5-volt battery

9-volt battery 1 9-volt battery

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