28108 Parallax Inc, 28108 Datasheet - Page 3

• Manufacturer Part Number: 28108
• Description: KIT QTI BOE-BOT LINE FOLLOWER
• Manufacturer: Parallax Inc

Specifications of 28108

• Accessory Type: QTI Infrared
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: Boe-Bot®
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Building the Sensing Circuits
Each QTI B pin is tied to Vss (ground) and each W pin is connected to Vdd (5 V). R pin connects to a
BASIC Stamp I/O pin:
Copyright © Parallax Inc.
4. Attach a QTI sensor to the other end of each threaded standoff, using a 3/8-inch screw. The
5. If necessary, slightly loosen the 7/8-inch screws and adjust the position of the QTI sensors so
6. Tighten all connections securely.
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sensors should be facing downwards, and the 3-pin headers on each sensor should be pointing
towards the back of the chassis.
that they are closely positioned edge to edge.
Far right to P4
Mid right to P5
Use the schematic and the wiring diagram below to build the circuits for the three-pin headers.
Although there are many ways this circuit can be built, the setup shown below is useful because
it's thrifty with breadboard real-estate. Also, if you are using a HomeWork Board with your Boe-
Bot, it won’t interfere with the servo connections.
QTI LIne Follower AppKit (#28108)
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
Mid left to P6
Mid right to P7
v2.0 3/23/2009 Page 3 of 6
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