Figure 11.
Figure 12.
Shield, so they can’t be changed on
the I/O board.
That is why you see some of the
buttons and switches on the web
page set to a ‘1.’ Experiment now
with switch settings and buttons, hit
the “Update” button on the page,
and see them change.
Your robot can also give you
18 SERVO 11.2012
sensor feedback. Click on the radio
buttons for the LEDs, then “Update.”
You will see them change on the I/O
board. In my case, the web page I
show causes the LEDs to light on the
board; look and see how they are
mapped.
Figure 12 shows the serial port
output telling you the HTML
messages are coming in from the
client web page. This is handy for
troubleshooting and learning how
HTML works. Since this is a web
server, more than just this can be
done. If you click on the
“Demonstration Hardware platform”
link on the page, you’ll get Figure
13 with a graphic on it. This could be
your robot sending back camera
shots. Cool, huh?
