{"title":"QTRX-MD-13A Reflectance Sensor Array: 13-Channel, 8mm Pitch, Analog Output, Low Current","handle":"qtrx-md-13a-reflectance-sensor-array-13-channel-8mm-pitch-analog-output-low-current","url":"/products/qtrx-md-13a-reflectance-sensor-array-13-channel-8mm-pitch-analog-output-low-current","description":"The QTRX-MD-13A is a 13-channel reflectance sensor array designed for line-following robots and reflectance detection applications. It uses high-performance QTRX sensor modules with lenses, providing strong performance at a low 3.5 mA LED current per channel. The analog voltage output (0 V to VCC) can be read directly by a microcontroller's ADC.\n\nThe array features integrated LED drivers with 32-level brightness dimming, independent of supply voltage. With 13 sensors at 8 mm pitch, separate odd/even emitter control pins allow advanced sensing configurations such as detecting reflections at different angles.\n\nKey Features\n\n\n13 QTRX Sensors – High-performance modules with lenses for low-current operation\n\n8 mm Pitch – Medium-density sensor spacing\n\nAnalog Output – 0 V (strong reflectance) to VCC (no reflectance)\n\nOperating Voltage – 2.9 V to 5.5 V\n\nLED Current – 3.5 mA per emitter (full brightness)\n\nMax Board Current – 31 mA\n\n32-Level Dimming – Independent brightness control via CTRL pins\n\nOdd/Even Emitter Control – Separate CTRL ODD and CTRL EVEN pins\n\nOptimal Sensing Distance – 10 mm (max 40 mm)\n\nDimensions – 101.0 × 16.5 × 3.0 mm\n\nWeight – 6.2 g\n\n\nIdeal For\n\nLine-following robots\nEdge detection and surface tracking\nProximity and presence sensing\nReflectance-based colour sorting\n\n\nPackage Contents\n\n1× QTRX-MD-13A Reflectance Sensor Array\n\n\n\nNote: No headers or connectors are included. You will need to supply your own headers or solder wires directly to the board.\n\n\nResources\n\nArduino Library Documentation\nDimension Diagram (PDF)\n","vendor":"Pololu","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":5328,"title":"Default Title","sku":"PL-4453","price":41.47,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}