Page 168 - Amphibionics : Build Your Own Biologically Inspired Robot

Amphibionics 05 3/24/03 8:44 AM Page 147
Chapter 5 / Serpentronic: Build Your Own Robotic Snake
Use a 1/32-inch
Circuit board drilling and parts placement.
drill bit to drill all of the component holes on the PCB. Drill the
holes for the voltage regulator (U1) with a 3/64-inch drill bit. Use
Table 5.2 and Figure 5.39 to place the parts on the component
side of the circuit board. Note that the PIC 16F84 microcontroller
(U2) is mounted in an 18-pin I.C. socket. The 18-pin socket is sol-
dered to the PC board and the PIC is inserted after it has been pro-
grammed. Use a fine-toothed saw to cut the board along the guide
lines, and drill the mounting holes using a 5/32-inch drill bit.
Figure 5.40 shows the finished main controller board.

Figure 5.39
Controller board PCB
component side parts
placement.

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