We've been working on the LED light over the past few weeks and we finally made progress this time! 

The LED light successfully turned bright after we tried multiple times. (In the first trial, the original ultra-violet light bulb  broke， In the second trial, we made a mistake in assembling the light. )

In the process of Debugging, we learned that seemingly inconsequential things can lead to great failures, hence, we should always be careful in learning。               

This image shows 2 types of LED with different light color.