28139 Parallax Inc, 28139 Datasheet - Page 114

• Manufacturer Part Number: 28139
• Description: KIT REMOTE IR FOR BOE-BOT W/TEXT
• Manufacturer: Parallax Inc

Specifications of 28139

• Accessory Type: IR Remote
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Boe-Bot®
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

Longer
(anode)
leads
Step 2 - Test the Roaming with IR Object Detection Program
Chapter 7, Activity #5 from Robotics with the Boe-Bot introduces a high performance
version of roaming with IR. This program checks for an object between each servo pulse
(that's around 40 times per second), so the Boe-Bot is very responsive when it detects
obstacles. You will be modifying this program, so go ahead and do a refresher on how it
works. It's also important to make sure the original program works with your circuit
before moving on to the other modifications.
Step 3 - Modify the Program so that You Can Control Roaming Speed
Variables can be used to control a variety of Boe-Bot behaviors. Among other things,
these variables can tell the Boe-Bot how fast to go (this step) and what task to perform
(next step). Just a few examples of conditions that can be used to change these variables
are:
P15
P14
P13
P12
P11
P10
P9
P8
P7
P6
P5
P4
P3
P2
P1
P0
X2
X3
To Servos
√
√
Board of Education
Rev C
Vdd
+
15 14
Review the program FastIrRoaming.bs2 and the explanation of how it works in
Robotics with the Boe-Bot, Chapter 7, Activity #5.
Open (or re-enter) and test FastIrRoaming.bs2 by following the instructions in its
activity.
X4
Vdd
Vin
© 2000-2003
13 12
X5
Vss
Red
Black
Longer
(anode)
leads
HomeWork Board
P15
P14
P13
P12
P11
P10
P9
P8
P7
P6
P5
P4
P3
P2
P1
P0
To Servos
X2
X3
[phone]
www.parallax.com
www.stampsinclass.com
Vdd
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Vin
Vss
Rev B
Figure 3-2
IR Detection
Testing and
Roaming
Circuit Wiring
Diagrams