A little USB device(use Attiny85 MCU) for detecting UVA/UVB light data outside.
How to build this project:
step1. Download Arduino IDE 1.8.2 from https://www.arduino.cc/en/Main/Software
step2. Add patch for Digistump
(Run Arduino ide --> File --> References --> Enter "http://digistump.com/package_digistump_index.json" in the box labeled
--> Tools --> Boards Manager --> select contributed --> install 'Digstump AVR boards' )
Or you can download digisparkIDE from https://github.com/digistump/DigistumpArduino/releases
step2.You could checkout all the Libraries from https://github.com/digistump/DigistumpArduino/tree/master/digistump-avr/libraries