You might want to look at this How to get the best out of this forum before you proceed any further.
The Arduino Project section where you first posted means the Future of the Arduino and how it should develop. So it was the wrong section to select. I have moved it to a better place.
You can't do that, you have to translate both the the logic and voltage values before it will work.
You might have just fried you Arduino. Will it still load the blink sketch?