Activity #6: Roaming Toward The Light - Parallax Boe-Bot Student Manual

PAUSE 20
RETURN
Your Turn – Adjusting the Performance and Changing the Behavior
You can adjust the program's performance by adjusting the scale factor term in this
constant declaration:
'
LeftThreshold CON
RightThreshold CON
If you change the scale factor from
flashlight, which may (or may not) lead to improved flashlight control.
√ Try different scale factors, such as
any differences in the way the Boe-Bot responded to the flashlight beam.
By modifying the
IF...THEN
Bot's behavior so that it tries to get the light out of its eyes.
√ Modify the
IF...THEN
flashlight beam with both photoresistor circuits and turns away if it detects the
flashlight beam with only one of its photoresistor circuits.

ACTIVITY #6: ROAMING TOWARD THE LIGHT

The example program in this activity can be used to guide the Boe-Bot through exiting a
fairly dark room toward a doorway that's letting in brighter light. It also allows for much
better control over the Boe-Bot's roaming by casting shadows over the photoresistors
with your hand.
Readjusting the Photoresistors
This activity works best if the photoresistors' light collecting surfaces are pointing
upwards and outwards.
Chapter 6: Light Sensitive Navigation with Photoresistors · Page 219
Average
LeftBright + LeftAmbient / 2
RightBright + RightAmbient / 2 * 5 / 8
5 1
/ to / , it will make the Boe-Bot less sensitive to the
8 2
1 1 1
/ , / ,
4 2
statement in the example program, you can change the Boe-
statement so that the Boe-Bot backs up when it detects the
Scale factor
* 5 / 8
2 3
/ , / , and / and make notes about
3 3 4