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CHAPTER 3 ■ MOTION 53
Figure 3-2. A servo controller and a servo with wheels
You can connect the servo controller to your serial port via the RJ-11 connector (phone
jack) or via the jumper on the board. I have not shown the connection of power to the servos.
This should be 3.8 to 6.0 volts (sometimes you can go as high as 7.2 volts for high-quality
servos). There is also a connector for a 9- to 12-volt battery to power the controller board.
■Note There are other controllers out there. See Appendix B for more information.
Once you connect your servo controller to your PC’s serial port, you’re ready program.
3.1 Servo Controllers
Servo controllers greatly simplify the PC’s ability to communicate with servos and electronic
speed controls, much like a microcontroller simplifies the PC’s ability to communicate with
sensors.
