Page 66 - The Definitive Guide to Building Java Robots

Preston_5564C02.fm Page 47 Wednesday, September 14, 2005 5:42 AM

CHAPTER 2 ■ SERIAL COMMUNICATION 47

The classes and interface created in this section were
• JController.java: This is the interface that will specify behavior for all controllers.
• Controller.java: This is the abstract super-class implementing execute() and execute2()
for all future controllers.
• SimpleStamp.java: This is an implementation class for the SerialEcho.bs2 program
presented in section 2.3.
The only thing left to create is to get wireless communication with the combination of our
BASIC Stamp and Bluetooth device.

2.6 Bluetooth Serial Communications

This is so easy once the Bluetooth device is set up. All you need to do is change the com port ID.
I used the EB500 from Parallax. This plugs right into the boards they have and it’s a great value
at under $100 compared with other Bluetooth serial adapters. Make sure you use the com port
as specified beneath the Bluetooth Serial Port under the Client Applications tab.
You can find the instructions for setting up the microcontroller and the EB500 adapter at
the Parallax site or in the manual under the title “Connecting Between a PC with a DBT-120 and
a BOE.” Photos of the EB500 and DBT-120 are shown in Figures 2-9 and 2-10.

Figure 2-9. The Parallax EB500 Bluetooth Transceiver Module