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Flora UV Index Sensor - Si1145 Light Sensor

SKU: ZO-1044
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Flora UV Index Sensor - Si1145 Light Sensor

Do you dislike getting sunburns? ? Well, using the Flora digital UV index sensor, your wearable can keep you from getting sunburnt. It’s small, round, and connects to the L2C bus pads. Flora can even use our library code to get calibrated light level and UV index data from the sensor. However, keep in mind that this sensor can be used by Flora but is too complex for Gemma!
The instructions on how to use it are as follows: connect the 3V, SDA and SCL, and GND pads of the sensor to your Flora 3V/SDA/SCL/GND pads, in that order. Then load up our Arduino library and example code from the classic Breakout tutorial to your Flora,

Technical Details


SI1145 Details:

  • Datasheet
  • IR Sensor Spectrum: Wavelength: 550nm-1000nm (centered on 800)
  • Visible Light Sensor Spectrum: Wavelength: 400nm-800nm (centered on 530)
  • Voltage Supply: Power with 3 VDC
  •  I2C address 0x60 (7-bit)
  • Operating Temperature: -40°C ~ 85°C

Breakout Board details:

  • Diameter: 14mm / 0.6"
  • Height: 2mm / 0.08"
  • Weight: 0.3g


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