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STM32F401C - VARIOUS PC DON'T "SEE" MY CARD

Question asked by bi.giorgio on Feb 5, 2015
Latest reply on Feb 5, 2015 by Clive One
HELLO. My Name's Giorgio and i have a problem with this card. When i connect the card ,my pc doesn't detect the card. The card turns off 3 lights by USB link: 1- Com ,2-PWR 3-LD4 .Trough my Operating system and others i can't work on my card . Is it possible that the card has in its memory aan old program? Before it has programmed by my friend and i think that in my card's memory is yet a program and it can't onterface with the pc. Isthere a method to reset the card via elettrically mode beacuse via pc it isn't possible

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