Adafruit GUVA-S12SD Analog UV Light Sensor Breakout - 240-370nm Detection Range

Makers and electronics enthusiasts, this Adafruit UV sensor breakout opens up a whole new spectrum of light sensing for your projects!

The GUVA-S12SD sensor detects UV light in the 240-370nm range, which covers both UVB and most UVA spectrum - perfect for building UV index monitors, sun exposure trackers, or environmental sensing projects.

The analog output makes it super easy to use - just power it with 2.7-5.5VDC and read the voltage from the OUT pin.

The built-in op-amp amplifies the tiny photodiode signals to a manageable voltage level, so you don't need additional circuitry.

The output voltage relates directly to UV intensity - approximately 4.3 volts per microampere of photocurrent.

You can even convert the reading to UV Index by dividing the output voltage by 0.1V.

The compact size (10x19x2mm) makes it perfect for embedding in projects without taking up much space.

What's really cool is that this gives you 'true' UV sensing rather than calibrated visible light sensors that estimate UV levels.

Perfect for weather stations, wearable sun safety devices, or scientific experiments measuring UV exposure.

The quality is typical Adafruit - well-designed board, clear documentation, and reliable performance.

Seriously, if you've been wanting to add UV sensing to your Arduino, Raspberry Pi, or other microcontroller projects, this breakout makes it accessible and straightforward.

The analog output means you can use it with any microcontroller that has analog input capabilities.

It's one of those specialized sensors that opens up creative project possibilities you might not have considered before.

Every electronics hobbyist should experiment with different types of environmental sensors, and this UV detector is a fascinating addition to any maker's toolkit!