Hurray, good for you. I just heard a small noise. What do you mean you turned the pins to Analog? Are you still using A pins as clock, rst, and dta?
You were using Arduino nano right? Ask you this cause since I am using UNO, will have to put some resistors between rst,clock and dta pins. Cause UNO high value is 5v and I think WTV020-SD-16P is 3.3v.