CHAPTER 22 ■ SOLDERING AND CONNECTING
- Loop the yellow wire through the eyelet in the other center terminal, twist the
wire together, and solder.
The center terminals will have power rushing from the transistors to the motors. At the present time,
since nothing is connected to the remaining switch terminals, the power doesn’t reach the motors, so the
robot won’t move. The same thing occurs when the switch is in the center position: The switch doesn’t
internally connect the center terminals to either side terminals, thus the motors aren’t connected to
transistor power and the robot won’t move.
- Loop one end of the 6 cm red wire and one end of the 15 cm red wire together
to the same terminal. You can pick any of the remaining terminals. I arbitrarily
chose the lower right terminal in Figure 22-23. Twist together and solder.
Figure 22-23. Diagonal side terminals covered in heat-shrink tubing and connected to left motor
Figure 22-22. Left and right transistor outputs soldered to the switch’s center terminals