Am having difficulties with error 'initialization failed', have now tried 2 Lucas Studio cards, have wired them in and out so many times that once should have worked for me.
Have tried using SD Format on my 8GB card.
Have tried both in Mega ADK and a Duemillanove and no luck.
Have tried the mod recommended here; to connect Pin 1 of Voltage Regulator to the ground plane on rear side and that then shorts out everything totally.
So if you do this beware You may well take out your PC usb port!!!
To be clear - I wired the pin on the voltage regulator which is the pin closest to the edge connector pins to teh rear ground plane and everything dies, a dead short.
I do find it strange that now End of September 2013 they still sell a card with such a bug ! ( agree although that anything might be possible )
Have connected an LED to CS signal just to make sure it tickles when accessing sd card and yes it does.
As board has 5v I have presumed that Lucas SD signal pins will work ok on 5v TTL logic, there are circuits on the web showing straight though TTL wiring is ok and others talk of diodes to make voltage drop to 3.3v, most confusing ! There surely can not be 2 different methodologies !
Any one got any more insight, very grateful to hear your knowledge.