UV nail lamp

Hi all! I did this UV lamp a few months ago and now I want to share it with you guys. I will try to explain it as clearly as I can. If you dont understand something just feel free to ask me as English is not my main language :)

This project is supposed to be cheap so the entire lamp should cost less than 8$ if you find good offers.

WHAT DO YOU NEED?

- 6x UV high power leds.

I bought that ones 395-400nm and it works fine so there's no need of shorter wavelength because you can hurt your hands. The only important thing here is to choose the ones with 16mm rounded base to ensure it will fit well. (COST: 5$)

http://www.ebay.com/itm/1-10-20-50-pcs-3W-High-Power-UV-ultraviolet-365nm-395nm-420nm-LED-Lamp-Light-/221810182099

- 1x microUSB step-up converter.

I decided to use this power supply because everybody have microUSB cables and it's a cheap module to get that extra voltage to drive the leds. If you want to use another type of power supply you will have to edit rea