{"title":"Light Sensor Modules","description":"","products":[{"product_id":"20mm-gl20528-light-sensitive-photoresistor-ldr","title":"20mm GL20528 Light Sensitive Photoresistor LDR","description":"\u003cp\u003eThe resistance of 20mm GL20528 Light Sensitive Photoresistor LDR changes with the change in the ambient light exposed on the surface of the sensor. As the light on the sensor increases then the resistance across the two leads decreases. Light Dependent Resistor is a type of\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/robu.in\/product-tag\/photoresistor\/\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e\u003cstrong\u003ephotocell\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ewhich finds excellent use in light sensing device application, whether it is automatic outdoor light ON\/OFF switch or indoor automatic light switch; moreover, the 12mm LDR or\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/robu.in\/product-tag\/photoresistor\/\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e\u003cstrong\u003ephotoresistor\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003esensor works best in both light and dark regions. The photo-resistor is a staple of electronics. If you need a way to sense the level of ambient light, then there is no easier way to do it without an LDR\/photo-resistor.\u003c\/p\u003e\n\u003cp\u003eTwo Cadmium Sulphide PhotoConductive Cells with spectral responses similar to that of the human eye. Cell resistance falls with increasing light intensity. Applications of this product include smoke detection, automatic lighting control, batch counting, and burglar alarm systems. Furthermore, some of the applications are given below.\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e Analog Applications:\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003col\u003e\n\u003cli\u003eCamera exposure control\u003c\/li\u003e\n\u003cli\u003eAuto slide focus - dual cell\u003c\/li\u003e\n\u003cli\u003ePhotocopy machines - the density of the toner\u003c\/li\u003e\n\u003cli\u003eColorimetric test equipment\u003c\/li\u003e\n\u003cli\u003eDensitometer\u003c\/li\u003e\n\u003cli\u003eElectronics scales - dual cell\u003c\/li\u003e\n\u003cli\u003eAutomatic gain control - modulated light source\u003c\/li\u003e\n\u003cli\u003eAutomated rear view mirror\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cstrong\u003eDigital Applications:\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003col\u003e\n\u003cli\u003eAutomatic headlight dimmer\u003c\/li\u003e\n\u003cli\u003eNightlight control\u003c\/li\u003e\n\u003cli\u003eOil burner flame out\u003c\/li\u003e\n\u003cli\u003eStreetlight control\u003c\/li\u003e\n\u003cli\u003eAbsence\/presence (beam breaker)\u003c\/li\u003e\n\u003cli\u003ePosition sensor\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cstrong\u003eOther applications:\u003c\/strong\u003e\n\u003col\u003e\n\u003cli\u003eAnnunciator\u003c\/li\u003e\n\u003cli\u003eCamera automatic photometry\u003c\/li\u003e\n\u003cli\u003eElectronic toy\u003c\/li\u003e\n\u003cli\u003eIndustrial control\u003c\/li\u003e\n\u003cli\u003eLight control\u003c\/li\u003e\n\u003cli\u003eLight control lamp\u003c\/li\u003e\n\u003cli\u003ePhotoelectric control\u003c\/li\u003e\n\u003cli\u003eSwitch\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eTo know more about photo-resistor, click here.\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.resistorguide.com\/photoresistor\/\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eWhat is photo-resistor?\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch4\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eCoated with epoxy\u003c\/li\u003e\n\u003cli\u003eGood reliability\u003c\/li\u003e\n\u003cli\u003eHigh sensitivity\u003c\/li\u003e\n\u003cli\u003eSmall volume\u003c\/li\u003e\n\u003cli\u003eFast response\u003c\/li\u003e\n\u003cli\u003eGood spectrum characteristic\u003c\/li\u003e\n\u003cli\u003eModel: GL20528 ( GM20528 )\u003c\/li\u003e\n\u003cli\u003eSize: 20mm\u003c\/li\u003e\n\u003cli\u003eMax. voltage: 500 VDC\u003c\/li\u003e\n\u003cli\u003eMax. power: 500 mW\u003c\/li\u003e\n\u003cli\u003eSpectrum Peak Value (nm): 560\u003c\/li\u003e\n\u003cli\u003eLight resistance ( KΩ) : 10--20 kΩ\u003c\/li\u003e\n\u003cli\u003eDark resistance ( KΩ): 2 kΩ.\u003c\/li\u003e\n\u003cli\u003eΥ value : 0.6.\u003c\/li\u003e\n\u003cli\u003eIncrease response time: 30 mS.\u003c\/li\u003e\n\u003cli\u003eDecrease response time: 30 mS.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cstrong\u003ePackage Includes :\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cdiv\u003e1 x 20mm GL20528 Light Sensitive Photoresistor LDR. \u003c\/div\u003e\n\u003cdiv\u003especification : \n\u003ctable class=\"specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eGeneric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter (mm):\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Wavelength\u003c\/td\u003e\n\u003ctd\u003e560nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNo. of Pins:\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDark Resistance:\u003c\/td\u003e\n\u003ctd\u003e2kOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Resistance:\u003c\/td\u003e\n\u003ctd\u003e10 to 20kOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Voltage (V):\u003c\/td\u003e\n\u003ctd\u003e500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Power (W)\u003c\/td\u003e\n\u003ctd\u003e0.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time (uS)\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdditional Specs.:\u003c\/td\u003e\n\u003ctd\u003eDark Resistance: Max 2 kOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e0.001 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e1 × 1 × 1 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Jaideep Robotics","offers":[{"title":"Default Title","offer_id":46433045938349,"sku":"44118","price":23.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/7638\/9293\/files\/download-2026-06-27T161134.352.avif?v=1782556901"},{"product_id":"seeed-studio-grove-light-sensor","title":"Seeed Studio Grove Light Sensor","description":"\u003cp\u003eNeed a device to sense light? We have the Grove – Light Sensor v1.2 for you. Now you can measure light levels with higher reliability and sensibility. It is an updated version of Grove - Light Sensor 1.0. You can use it as a light-controlled switch i.e. switch off lights during day time and switch on lights during night time.\u003c\/p\u003e\n\u003cp\u003eThe resistance of light sensor, also known as the Light Dependent Resistor (LDR) decreases when the ambient light intensity increases. However, the change in resistance due to ambient light is not linear; in low-light conditions, small changes in luminescence cause relatively large changes in resistance (or output voltage), but in well-lit conditions, changes in luminescence cause only small changes in resistance.\u003c\/p\u003e\n\u003cp\u003eA dual OP-AMP chip LM358 on board produces voltage corresponding to the intensity of light (i.e. based on the resistance value). The output signal is an analog value. The brighter the light is, the larger the value will be. The output electrical signals can be converted to different ranges (It depends on the Analog-to-Digital-Converter on your controller board. For example, it can output 0-255 for an 8-bit ADC). It integrates a high-sensitive and reliable phototriode GL5528. Just like other grove modules, you can interface this sensor with Grove port which can save a lot of work in the wiring.\u003c\/p\u003e\n\u003cp\u003eFor all Grove users (especially beginners), Seeed Studio provides guidance PDF documents. Please download and read through \u003ca href=\"http:\/\/www.seeedstudio.com\/document\/pdf\/Preface.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e\u003cstrong\u003ePreface - Getting Started\u003c\/strong\u003e\u003c\/a\u003e and \u003ca href=\"http:\/\/www.seeedstudio.com\/document\/pdf\/Introduction%20to%20Grove.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e\u003cstrong\u003eIntroduction to Grove\u003c\/strong\u003e\u003c\/a\u003e before using the product. This is a suitable product for not only Grove users but also all electronic enthusiasts. So, why wait? Buy now!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eWarning: The light sensor value only reflects an approximated trend of light intensity, it DOES NOT represent the exact Lumen count.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch5\u003e\u003cstrong\u003eHardware Overview:\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/robu-prod-media.s3.ap-south-1.amazonaws.com\/product-descriptions\/2019\/09\/Grove-Light-Sensor4.jpg\"\u003e\u003cimg class=\"aligncenter wp-image-595916 size-full\" src=\"https:\/\/robu-prod-media.s3.ap-south-1.amazonaws.com\/product-descriptions\/2019\/09\/Grove-Light-Sensor4.jpg\" alt=\"Grove - Light Sensor\" width=\"390\" height=\"238\"\u003e\u003c\/a\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eGrove port to connect the cable\u003c\/li\u003e\n\u003cli\u003ePhototriode (GL5528) as a photodetector\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eAnalog value output\u003c\/li\u003e\n\u003cli\u003eHigh reliability and sensibility\u003c\/li\u003e\n\u003cli\u003eSmall footprint\u003c\/li\u003e\n\u003cli\u003eRecognizes a wide spectrum\u003c\/li\u003e\n\u003cli\u003eEasy to use\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch5\u003e\u003cstrong\u003eUseful Links:\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"http:\/\/wiki.seeedstudio.com\/Grove-Light_Sensor\/\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e\u003cstrong\u003eTutorial\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch5\u003e\u003cstrong\u003eProject Links:\u003c\/strong\u003e\u003c\/h5\u003e\n\u003col\u003e\n\u003cli class=\"hckui__typography__h1\"\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.hackster.io\/dhairya-parikh\/the-environment-cube-know-the-land-beneath-you-using-sigfox-952f29\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eThe Environment Cube\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli class=\"hckui__typography__h1\"\u003e\u003ca href=\"https:\/\/www.hackster.io\/ingo-lohs\/grove-introduction-in-a-light-sensor-a55efd\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e\u003cstrong\u003eGrove - Introduction in a Light Sensor\u003c\/strong\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch4\u003e\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003e1 x Seeed Studio Grove Light Sensor\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSpecification:\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel:\u003c\/td\u003e\n\u003ctd\u003eLight Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current (mA):\u003c\/td\u003e\n\u003ctd\u003e0.5 to 3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Response wavelength(nM)\u003c\/td\u003e\n\u003ctd\u003e540 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength (mm):\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth (mm):\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Hole Diameter (mm)\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (g):\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time (uS)\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e0.005 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e6.8 × 4.5 × 1.8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Jaideep Robotics","offers":[{"title":"Default Title","offer_id":46433102561453,"sku":"595785","price":188.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/7638\/9293\/files\/download_63_29a96255-b7e5-4953-8217-164015f0dcc3.avif?v=1782562446"}],"url":"https:\/\/jaideeprobotics.com\/collections\/light-sensor-modules.oembed","provider":"Jaideep Robotics ","version":"1.0","type":"link"}