{"product_id":"adafruit-stemma-reflective-photo-interrupt-sensor-tcrt1000","title":"Adafruit STEMMA Reflective Photo Interrupt Sensor - TCRT1000","description":"\u003cp\u003eAn optical reflective sensor is a composite electronic device with two elements - an IR LED and an IR photo-transistor. The IR LED blasts light, and when something bounces the light back to the photo-transistor, the transistor turns on and the amount of current flowing through it increases.\u003c\/p\u003e\n\u003cp\u003eThis makes the sensor great at detecting when something is in front of the sensor: when nothing is there the IR light never gets reflected back and the transistor stays off.\u003c\/p\u003e\n\u003cp\u003eWe have two versions of this sensor that are 'breadboard' friendly, the \u003ca href=\"https:\/\/www.adafruit.com\/product\/3930\" data-mce-href=\"https:\/\/www.adafruit.com\/product\/3930\"\u003eITR20001\u003c\/a\u003e and a chunky all-in-one\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.adafruit.com\/product\/2349\" data-mce-href=\"https:\/\/www.adafruit.com\/product\/2349\"\u003eInfrared Reflective Sensor\u003c\/a\u003e, but both are tough to mount, and require wiring up with resistors to get working. To make usage super fast and no-soldering-or-breadboarding-required, the \u003cstrong\u003eAdafruit STEMMA Reflective Photo Interrupt Sensor\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis ready to go out of the box.\u003c\/p\u003e\n\u003cp\u003ePower it with 3 to 5V DC and read the signal off the output pin to quickly detect reflective surfaces. A green LED tells you that the board is powered,  and a red LED will light up to let you know when the phototransistor is activated. (Both LEDs can be disabled)\u003c\/p\u003e\n\u003cp\u003eOnboard we have a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.digikey.com\/en\/products\/detail\/vishay-semiconductor-opto-division\/TCRT1000\/1681165\" data-mce-href=\"https:\/\/www.digikey.com\/en\/products\/detail\/vishay-semiconductor-opto-division\/TCRT1000\/1681165\"\u003eTCRT1000 right-angle sensor module\u003c\/a\u003e. A potentiometer allows adjustment of how bright the IR emitter is, turn it all the way down for about 1mA, turn it all the way up for about 100mA. Then the receiving phototransistor is biased with a 10K pullup. When no IR light is detected, the output signal pin is high. When IR is bounced back, the voltage will drop down towards 0V.\u003c\/p\u003e\n\u003cp\u003eThis board has a simple plug-and-play JST PH (2mm pitch) input connector for solderless use. For use with a CircuitPlayground or micro:bit, this \u003ca href=\"https:\/\/www.adafruit.com\/product\/4030\" data-mce-href=\"https:\/\/www.adafruit.com\/product\/4030\"\u003eJST to alligator-clip cable\u003c\/a\u003e works best. Red is power, ground is black and signal is white. For use with a breadboard, \u003ca href=\"https:\/\/www.adafruit.com\/product\/3893\" data-mce-href=\"https:\/\/www.adafruit.com\/product\/3893\"\u003etry this JST to male\/plug-header\u003c\/a\u003e. (We also have a \u003ca href=\"https:\/\/www.adafruit.com\/product\/3894\" data-mce-href=\"https:\/\/www.adafruit.com\/product\/3894\"\u003esocket-header cable\u003c\/a\u003e if you want).\u003c\/p\u003e\n\u003ch2\u003eTechnical Details\u003c\/h2\u003e\n\u003cp\u003eProduct Dimensions: 25.5mm x 17.5mm x 8.0mm \/ 1.0\" x 0.7\" x 0.3\"\u003c\/p\u003e\n\u003cp\u003eProduct Weight: 2.2g \/ 0.1oz\u003c\/p\u003e\n\u003cp\u003e\u003cimg height=\"80\" width=\"145\" alt=\"RoHS 2 2011 65 EU Compliant\" src=\"https:\/\/www.adafruit.com\/includes\/templates\/shop2019\/images\/RoHS2_2011_65_EU.svg\" data-mce-src=\"https:\/\/www.adafruit.com\/includes\/templates\/shop2019\/images\/RoHS2_2011_65_EU.svg\"\u003e\u003cimg height=\"80\" width=\"145\" alt=\"RoHS 2 2015 863 EU Compliant\" src=\"https:\/\/www.adafruit.com\/includes\/templates\/shop2019\/images\/RoHS2_2015_863_EU.svg\" data-mce-src=\"https:\/\/www.adafruit.com\/includes\/templates\/shop2019\/images\/RoHS2_2015_863_EU.svg\"\u003e\u003c\/p\u003e\n\u003ch2 class=\"col-lg-2 col-md-3 col-sm-3 col-xs-4\"\u003eLearn\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/learn.adafruit.com\/adafruit-stemma-reflective-photo-interrupt-sensor\" data-mce-href=\"https:\/\/learn.adafruit.com\/adafruit-stemma-reflective-photo-interrupt-sensor\"\u003ePrimary Guide: Adafruit STEMMA Reflective Photo Interrupt Sensor\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":56500168851829,"sku":"ADA5913","price":4.13,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0389\/1025\/files\/5913-00.jpg?v=1766148621","url":"https:\/\/wholesale.pimoroni.com\/products\/adafruit-stemma-reflective-photo-interrupt-sensor-tcrt1000","provider":"Pimoroni Wholesale","version":"1.0","type":"link"}