Making Things Talk

154 MAKING THINGS TALK

Figure 5-3

The XPort mounted on an RJ45 breakout board. A

couple of dabs of hot glue on the breakout board serve

as spacers to keep the metal of the XPort’s case from

contacting the outside pins on the breakout board.

Figure 5-2

» continued from previous page

The seesaw client detail photos. The schematic is

shown on the previous page.

A. To Xport B. To Arduino C. LED outputs D. Reset

A

B

C

D

Switch input

(connection

not shown)

TX

RX

RX

TX

Making_Things_Talk.indb 154 11/13/09 4:53 PM

COMMUNICATING IN (NEAR) REAL TIME 155

Figure 5-4

The outside of the seesaw

control box, and the

connectors.

Figure 5-5

Inside the box, showing the

wiring to the LEDs and the

switch in the box cover.

Making_Things_Talk.indb 155 11/13/09 4:53 PM

156 MAKING THINGS TALK

/*

pong client

Language: Wiring/Arduino

This program enables an Arduino to control one paddle in a

networked pong game.

*/

// defines for the Lantronix device's status (used for staus variable):

#define disconnected 0

#define connected 1

#define connecting 2

// defines for I/O pins:

#define connectButtonPin 2

#define rightLED 3

#define leftLED 4

#define connectionLED 5

#define connectButtonLED 6

#define deviceResetPin 7

First, start with ...