{"product_id":"adafruit-ltr390-uv-light-sensor-stemma-qt-qwiic","title":"Adafruit LTR390 UV Light Sensor - STEMMA QT \/ Qwiic","description":"\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\u003cp\u003eUnlike the Si1145, 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 GUVA analog sensor, the biasing and ADC is all internal so you don't need an ADC.\u003c\/p\u003e\u003cp\u003eTo make using it as easy as possible, we’ve put the LTR390 on a breakout PCB  in our Stemma QT form factor with a sprinkle of support circuitry to give you options when testing. You can either use a breadboard or the\u003cstrong\u003e SparkFun qwiic\u003c\/strong\u003e compatible \u003cstrong\u003eSTEMMA QT\u003c\/strong\u003e connectors, and compatibility with 5V voltage levels as commonly found on Arduinos, as well as 3.3V logic used by many other boards like the Raspberry Pi or our Feathers.\u003cstrong\u003e \u003c\/strong\u003e\u003cstrong\u003eQT Cable is not included\u003c\/strong\u003e, but we have a variety in the shop for quick plug-and-play support.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003ch2\u003eTechnical Details\u003c\/h2\u003e\u003cdiv id=\"tab-technical-details-content\" class=\"panel-collapse collapse in\"\u003e \u003cdiv class=\"row\"\u003e \u003cdiv class=\"col-lg-12 col-md-12 col-sm-12 col-xs-12\"\u003e\u003c\/div\u003e \u003c\/div\u003e\n\u003cul id=\"product-files\"\u003e \u003c\/ul\u003e \u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-lg-2 col-md-3 col-sm-3 col-xs-4\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"col-lg-2 col-md-3 col-sm-3 col-xs-4\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":43493250433101,"sku":"oux1787258136688","price":3.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/1182\/8301\/files\/adafruit-ltr390-uv-light-sensor---stemma-qt-qwiic_1.jpg?v=1787258141","url":"https:\/\/www.grandorchard.shop\/products\/adafruit-ltr390-uv-light-sensor-stemma-qt-qwiic","provider":"My Store","version":"1.0","type":"link"}