Problem with arduino leonardo integration (need help)

Dear All,

I have a problem with arduino leonardo integration. I create a board based on leonardo design and try to build ADC output based on it. When I connect the board using USB to PC or laptop ON LED and L LED always on. However, the PC running on win7 x86_64 and Macbook air could not detect it. I integrate the board with 16 2N222 transistors and two ADCs. Do I have to add some power supply to the board? Or there is hardware connection? Thanks.


This seems to be much the same question as in your other Thread. DON'T DOUBLE POST