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Rover 4WD Tracked Chassis

Rover 4WD Tracked Chassis

USB to 232 Serial Adapter

USB to 232 Serial Adapter

QTI Sensor

The QTI Sensor is an infrared emitter/receiver that is able to differentiate between a dark surface) with low IR reflectivity) and a light surface (with high IR reflectivity).

These little sensors can be very handy for line following, maze navigation, or sensing the outer rim of a SumoBot ring.

Wiring options allow it to be used digitally for fast black/white line following, or as an analog sensor to detect different shades of gray. A daylight filter is built into the sensor.

What does QTI stand for?

Q = Charge

T = Transfer

I = Infrared

When your microcontroller measures the time it takes for the QTI's capacitor to decay, it's measuring a rate of charge transfer through an infrared phototransistor. This rate indicates how much infrared is reflecting off a nearby surface.
Key Features:

• Capable of analog or digital outputs

• No-contact surface sensing

• Unfocused for sensing diffused surfaces

• Daylight filter on sensor

• Easy to interface with any Parallax microcontroller

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