• It's a digital sensor that works over I2C so just about any microcontroller can use it• Individual visible & 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 & 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 & use the basic proximity sensor capability that is in the SI1145 as well• Adafruit wrapped this nice little sensor up on a PCB with level shifting & regulation circuitry so you can safely use it with 3 or 5V microcontrollers.•IR Sensor Spectrum: Wavelength: 550nm-1000nm (centered on 800)• Visible Light Sensor Spectrum: Wavelength: 400nm-800nm (centered on 530)• Voltage Supply: Power with 3-5VDC• Output Type: I2C address 0x 60 (7-bit)• Operating Temperature: -40°C ~ 85°CRemember when you were a kid & there was a birthday party at the pool & your parents totally embarrassed you by slathering you all over with sunscreen & you were all "MOM I HAVE ENOUGH SUNSCREEN" & 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 Si Labs, the UV index right now is 4.5 which means I do not need more sunscreen" & 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 Si Labs with a calibrated UV sensing algorithm that can calculate UV Index. We took this outside a couple days & compared the calculated UV index with the news-reported index & found it was very accurate! It's a digital sensor that works over I2C so just about any microcontroller can use it. The sensor also has individual visible & 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 & 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 & use the basic proximity sensor capability that is in the SI1145 as well. We wrapped this nice little sensor up on a PCB with level shifting & regulation circuitry so you can safely use it with 3 or 5V microcontrollers. If you are using an Arduino, we've got a lovely tutorial & library already written up with example code so you can quickly read sensor readings & the UV index in under 10 minutes. Each order comes with one fully assembled & tested PCB breakout & a small piece of header. You'll need to solder the header onto the PCB but it's fairly easy & takes only a few minutes even for a beginner.