If it's only a questuion of time i have patience and can wait for a sd box self powered to be build and ready to go. Let me knowi checked i have over 10 pcs but none ıf them work stand alone, you need to feed from usb port
actually it is working with specific version of arduino nanoIt will not work without external power as there is a 47R resistor on parallel-port power line (at least in Amiga 500) so there is no chance that it will supply more than few miliampers without serious voltage drop.
sending p.mDeclaring interest.
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So Iactually it is working with specific version of arduino nano
I am Interested in this one .actually it is working with specific version of arduino nano