{"product_id":"pololu-qtr-8a-8-channel-line-following-sensor-array-analog-ir-reflectance-for-robot-line-followers","title":"Pololu QTR-8A 8-Channel Line Following Sensor Array - Analog IR Reflectance for Robot Line Followers","description":"\u003cp\u003eLine sensor for line-following robots; also usable as a general-purpose proximity \/ reflectance sensor. Board can be broken into a 6-sensor + 2-sensor array.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e 8 IR LED \/ phototransistor pairs, 0.375 in (9.525 mm) pitch; 8 separate analog voltages, 0V to supplied voltage; operating voltage 3.3-5.0V; supply current about 100 mA (LED current about 20-25 mA per pair, LEDs in series pairs); optimal sensing distance 0.125 in (3 mm); maximum recommended 0.25 in (6 mm); MOSFET allows LEDs off for power saving \/ PWM brightness; 2.95 x 0.5 x 0.125 in (without header pins), 0.11 oz (3.09 g) without header.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Requires analog inputs to take readings (Pololu note). Pololu Arduino library and Pololu AVR library for Orangutan controllers. Do NOT claim direct Raspberry Pi GPIO compatibility - Pi has no built-in ADC, would need an external ADC not verified on the Pololu page.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePower:\u003c\/strong\u003e 3.3-5.0V, about 100 mA supply current.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePackage contents:\u003c\/strong\u003e Module + 25-pin 0.1 in header strip + 100 ohm through-hole resistor (resistor only needed if the board is broken apart).\u003c\/p\u003e","brand":"RoboCircuit","offers":[{"title":"Default Title","offer_id":67843988816186,"sku":null,"price":3580.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/4158\/2906\/files\/0J620.250.jpg?v=1793365148","url":"https:\/\/robocircuit360.com\/products\/pololu-qtr-8a-8-channel-line-following-sensor-array-analog-ir-reflectance-for-robot-line-followers","provider":"RoboCircuit","version":"1.0","type":"link"}