Parallax 555-27401 Manual

Parallax QTI Sensor KickStart (#555-27401)
What It Can Do
Detects differences between light and dark objects
•
Proximity detection to judge relative distance to an object
•
Works as an analog sensor, but can be connected to a digital I/O pin
•
The QTI Sensor uses an infrared light emitting diode and infrared phototransistor to provide
simple but effective non-contact detection of patterns and objects. In either case, light emitted by
the LED bounces off a surface or object, and is detected by the phototransistor.
For pattern detection, the sensor can differentiate between light and dark surfaces, such as a
black line drawn on a piece of white paper (useful as a robot line follower).
For object detection, the sensor can judge whether it's close to an object by how much infrared
light is reflected from it (useful as a tabletop edge detector).
Copyright © Parallax Inc.
Web Site: www.parallax.com
Forums: forums.parallax.com
Sales: sales@parallax.com
Technical: support@parallax.com
Office: (916) 624-8333
Fax: (916) 624-8003
Sales: (888) 512-1024
Tech Support: (888) 997-8267
Page 1 of 6