28125 Parallax Inc, 28125 Datasheet - Page 301

• Manufacturer Part Number: 28125
• Description: TEXT ROBOTICS
• Manufacturer: Parallax Inc

Specifications of 28125

• Title: Robotics with the Boe-Bot
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Not applicable / Not applicable

Materials Required
(1) Sheet of poster board – Approximate dimensions: 22 X 28 in (56 X 71 cm)
(1) Roll of Black Vinyl Electrical Tape – ¾” (19 mm) wide.
Testing the Stripe
Board of Education
Rev C
Vdd
+
X4
√
√
√
√
√
√
√
Vin
© 2000-2003
Use your poster board and electrical tape to build the course shown in Figure 8-
7.
Point your IR pairs downward and outward as shown in Figure 8-8 (Figure 7-8
from page 255 repeated here for convenience).
Make sure your electrical tape course is free of fluorescent light interference.
See Sniffing for IR Interference (page 245).
Replace the 1 kΩ resistors in series with the IR LEDs with 2 kΩ resistors to
make the Boe-Bot more nearsighted.
Run DisplayBothDistances.bs2 from page 275. Keep your Boe-Bot connected to
its serial cable so that you can see the displayed distances.
Start by placing your Boe-Bot so that it is looking directly at the white
background of your poster board as shown in Figure 8-9.
Verify that your zone readings indicate that an object is detected in a very close
zone. Both sensors should give you a 1 or 0 reading.
X5
Top View
Vss
Side View
Figure 8-8
IR Pairs Directed
Downwards to
Scan for the
Stripe