QTR-1A Kızılötesi Analog Sensör Paketi

QTR-1A analog reflectance sensor for line tracking and surface contrast detection. The QTR-1A is a miniature reflectance sensor that detects surface reflectivity by measuring infrared (IR) light. It carries a single infrared LED and a phototransistor pair; the LED emits IR light, and the phototransistor measures how much of that light bounces back from the target surface. This immediate, low-latency analog readout makes it a standard component for edge detection, proximity sensing, and line-following robots where distinguishing between contrasting surfaces (like black and white) is necessary