The QTR-1RC Reflectance Sensor is a high-performance infrared (IR) sensor designed for precision line-following and edge-detection applications in robotics. This compact sensor is equipped with advanced features to enhance your robot’s performance, making it an essential component for hobbyists, students, and robotics enthusiasts.
The Pololu QTR-1RC reflectance sensor carries a single infrared LED and phototransistor pair. The phototransistor uses a capacitor discharge circuit that allows a digital I/O line on a microcontroller to take an analog reading of reflected IR by measuring the discharge time of the capacitor. Shorter capacitor discharge time is an indication of greater reflection.
Specifications
- Dimensions: 0.3″ x 0.5″ x 0.1″ (without optional header pins installed)
- Operating voltage: 5.0 V
- Supply current: 17 mA
- Output format: digital I/O-compatible signal that can be read as a timed high pulse
- Optimal sensing distance: 0.125″ (3 mm)
- Maximum recommended sensing distance: 0.375″ (9.5 mm)
Weight without header pins: 0.008 oz (0.2 g)
