NEW PRODUCT – SI1145 Digital UV Index / IR / Visible Light Sensor
NEW PRODUCT – SI1145 Digital UV Index / IR / Visible Light Sensor: Remember when you were a kid and there was a birthday party at the pool and your parents totally embarrassed you by slathering you all over with sunscreen and you were all “MOM I HAVE ENOUGH SUNSCREEN” and she wouldn’t listen? Well, if you had this UV Index sensor connected up to an Arduino you could have said “According to this calibrated SI1145 sensor from SiLabs,the UV index right now is 4.5 which means I do not need more sunscreen” and she would have been so impressed with your project that you could have spent more time splashing around.
The SI1145 is a new sensor from SiLabs with a calibrated UV sensing element that can calculate UV Index. Unlike a basic UV analog sensor, it has a weighted calibration for UVA, UVB and UVC to give you a more precise UV index output than just “mW/cm2”. It’s a digital sensor that works over I2C so just about any microcontroller can use it. The sensor also has visible and IR sensing elements so you can measure just about any kind of light – we only wrote our library to printout the ‘counts’ rather than the calculate the exact values of IR and Visible light so if you need precision Lux measurement check out the TSL2561. If you’re feeling really advanced, you can connect up an IR LED to the LED pin and use the basic proximity sensor capability that is in the SI1145 as well.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.