{"product_id":"pl4-rob-09454","title":"Line Sensor Breakout - QRE1113 (Digital)","description":"\u003cp\u003eThis version of the QRE1113 breakout board features a digital output, using a capacitor discharge circuit to measure the amount of reflection. This tiny board is perfect for line sensing when only digital I\/O is available, and can be used in both 3.3V and 5V systems.\u003c\/p\u003e\n\n \u003cp\u003eThe board's [QRE1113](http:\/\/www.sparkfun.com\/commerce\/product_info.php?products_id=9542) IR reflectance sensor is comprised of two parts - an IR emitting LED and an IR sensitive phototransistor. When you apply power to the VCC and GND pins the IR LED inside the sensor will illuminate. A 100Ω resistor is on-board and placed in series with the LED to limit current. The output of the phototransistor is tied to a 10nF capacitor. The faster that capacitor discharges, the more reflective the surface is.\u003c\/p\u003e\n\n \u003cp\u003eThese sensors are widely used in line following robots. White surfaces reflect more light than black, so, when directed towards a white surface, the capacitor will discharge faster than it would when pointed towards a black surface.\u003c\/p\u003e  \n\n \u003cp\u003eThe power input and output pins are brought out to a 3-pin, 0.1\" pitch header. The board also has a single mounting hole if you want to screw it onto something.\u003c\/p\u003e\n\n \u003cp\u003eWe also have an [analog](https:\/\/www.sparkfun.com\/commerce\/product_info.php?products_id=9453) version of this board.\u003c\/p\u003e\n\n\u003cp\u003e**Features:**\u003c\/p\u003e\n\n\u003cp\u003e* 5VDC operating voltage\u003cbr\u003e\n* 25mA supply current\u003cbr\u003e\n* Digital I\/O compatible\u003cbr\u003e\n* No ADC required\u003cbr\u003e\n* Optimal sensing distance: 0.125\" (3mm)\u003cbr\u003e\n* 0.3x0.55\"\u003c\/p\u003e\n\n\u003cp\u003e**Documents:**\u003c\/p\u003e\n\n\u003cp\u003e* [Schematic](http:\/\/cdn.sparkfun.com\/datasheets\/Sensors\/Proximity\/QRE1113-Digital-Breakout-v11.pdf)\u003cbr\u003e\n* [Eagle Files](http:\/\/cdn.sparkfun.com\/datasheets\/Sensors\/Proximity\/QRE1113-Digital-Breakout-v11.zip)\u003cbr\u003e\n* [Datasheet](http:\/\/www.sparkfun.com\/datasheets\/Robotics\/QR_QRE1113.GR.pdf) (QRE1113)\u003cbr\u003e\n* [GitHub](https:\/\/github.com\/sparkfun\/QRE1113_Line_Sensor_Breakout-Digital\/tree\/V_1.1)\u003c\/p\u003e","brand":"SparkFun","offers":[{"title":"Default Title","offer_id":39705565757621,"sku":"PL4-ROB-09454","price":13.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0526\/9553\/1701\/products\/09454-01b.jpg?v=1618237857","url":"https:\/\/getcahits.com\/es\/products\/pl4-rob-09454","provider":"PuriLite","version":"1.0","type":"link"}