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poplex22

probleme convertor D/A cu intrari usb/sd mmc card

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va salut, este vorba despre o placuta de 5cm pe 5cm ce are 1 soclu de usb pe spate si pe fata 1 soclu de sd mmc si cel mai important este ca are un chip patrat cu 48 pini cu un cuart alaturi si o memorie rom 24c02, banuiesc ca-i vorba de un chip programat anterior cu un soft de decodare, problema este ca orice device conectez la intrare , pe iesirile de analog , nu scoate nimic, va rog ceva solutii sau chiar un ajutor material ,daca are cineva disponibil

 

 

 

 

 

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dle. m-ai pierdut !, ce vrei sa-mi spui cu asta-i problema ?!,  pe principiul free-energy ?

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scuzele de rigoare !, eu sunt de vina ca nu am precizat :  placuta este parte intr-o boxa activa si bineinteles alimentarea cu 5vcc este luata din interior, este am masurat-o ajunge si pe pinii de sd sau usb deci totul este ok !

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