Page 174 - Amphibionics : Build Your Own Biologically Inspired Robot

Amphibionics 05 3/24/03 8:44 AM Page 153
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 5.3 and Figure 5.44 to place the parts on the component
side of the circuit board. Note that the 555 timer is mounted in an
8-pin I.C. socket. The 8-pin socket is soldered to the PC board and
the 555 is inserted after the board has been soldered. Use a fine-
toothed saw to cut the board along the guide lines, and drill the
mounting holes using a 6/32-inch drill bit. Figure 5.45 shows the
finished main controller board.

FIGURE 5.44
Infrared sensor board
PCB component side
parts placement.

FIGURE 5.45
Parts soldered to the
finished PCB.

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