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- Organic cotton dog bibsPololu QTR-3RC Reflectance Sensor Array
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Description
Pololu QTR-3RC Reflectance Sensor Array
Features precise line detection
Operates at 5.0 V with 50 mA current
Measures 1.25" × 0.3" × 0.1"
Offers optimal 0.125" sensing range
Includes 3 IR LED/phototransistor pairs
The Pololu QTR-3RC Reflectance Sensor Array is a compact module designed for line-following robots, featuring three IR LED/phototransistor pairs on a small board. Each sensor provides a digital I/O-measurable voltage output, allowing for precise detection of lines or proximity. The sensors are spaced at 0.375 inches, making them ideal for courses using black electrical tape. The module operates by charging the output node and measuring the decay time of the voltage, which indicates reflectance levels. This method enhances sensitivity and allows parallel reading with most microcontrollers.
1x Pololu QTR-3RC Reflectance Sensor Array
1x 1×5 Straight male header strip
1x 1×5 Right-angle male header strip
32 x 8 x 3 mm (1.25 x 0.3 x 0.1")
PDF File
Operating voltage: 5.0 V
Supply current: 50 mA
Output format: 3 digital I/O-compatible signals readable as a timed high pulse
