{"product_id":"adafruit-ltr390-uv-light-sensor-stemma-qt-qwiic","title":"Adafruit LTR390 UV Light Sensor - STEMMA QT \/ Qwiic","description":"\u003ch2\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe LTR390 is one of the few low-cost UV sensors available, and it's a pretty nice one! With both ambient light and UVA sensing with a peak spectral response between 300 and 350nm. You can use it for measuring  how much sun you can get before needing to covering up.\u003c\/p\u003e\n\u003cp\u003eUnlike the\u003cspan\u003e \u003c\/span\u003eSi1145, this sensor will not give you UV Index readings. However, the Si1145 does UV Index approximations based on light level not true UV sensing. The LTR-390, in contrast, does have a real light sensor in the UV spectrum. It's also got a much much simpler I2C interface so you can run it on the Arduino or Python microcontrollers\/microcomputers with ease. Unlike the\u003cspan\u003e \u003c\/span\u003eGUVA analog sensor, the biasing and ADC is all internal so you don't need an ADC.\u003c\/p\u003e\n\u003cp\u003eTo make using it as easy as possible, we’ve put the LTR390 on a breakout PCB  in our\u003cspan\u003e \u003c\/span\u003eStemma QT form factor\u003cspan\u003e \u003c\/span\u003ewith a sprinkle of support circuitry to give you options when testing. You can either use a breadboard or the\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003eSparkFun qwiic\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecompatible\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSTEMMA QT\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econnectors, and compatibility with 5V voltage levels as commonly found on\u003cspan\u003e \u003c\/span\u003eArduinos, as well as 3.3V logic used by many other boards like the Raspberry Pi or our Feathers.\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"1479\" data-end=\"1523\"\u003eSensor Type: LTR390 (UV and ambient light)\u003c\/li\u003e\n\u003cli data-start=\"1526\" data-end=\"1566\"\u003eUVA Peak Spectral Response: 300–350 nm\u003c\/li\u003e\n\u003cli data-start=\"1569\" data-end=\"1585\"\u003eInterface: I²C\u003c\/li\u003e\n\u003cli data-start=\"1588\" data-end=\"1638\"\u003eOperating Voltage: 3.3 V or 5 V logic compatible\u003c\/li\u003e\n\u003cli data-start=\"1641\" data-end=\"1674\"\u003eLogic Level: 3.3 V and 5 V safe\u003c\/li\u003e\n\u003cli data-start=\"1677\" data-end=\"1729\"\u003eForm Factor: STEMMA QT \/ SparkFun Qwiic compatible\u003c\/li\u003e\n\u003cli data-start=\"1732\" data-end=\"1792\"\u003eInternal ADC and bias circuitry (no external ADC required)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1732\" data-end=\"1792\"\u003eCode: 4831\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003ePacking List:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-start=\"1820\" data-end=\"1892\"\u003e1 × LTR390 UV \u0026amp; Ambient Light Sensor Breakout Board\u003c\/li\u003e\n\u003cli data-start=\"2240\" data-end=\"2285\"\u003e1 × Set of header pins (requires soldering)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":42292903837887,"sku":"MLE01356","price":390.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0531\/3419\/6927\/files\/MLE01356_a168bb3a-8544-48b4-8c8b-b6836c539c32.jpg?v=1754709742","url":"https:\/\/makerlab.ph\/products\/adafruit-ltr390-uv-light-sensor-stemma-qt-qwiic","provider":"Makerlab PH","version":"1.0","type":"link"}