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Fon 2201 + SDcard


Khorne
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I have been looking around the net and found info on adding an SD card to the original FON. Can this be done to the fon +. Any info would be great.

Soldering skills are not a problem.

Cheers

Khorne

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I have been looking around the net and found info on adding an SD card to the original FON. Can this be done to the fon +. Any info would be great.

Soldering skills are not a problem.

Cheers

Khorne

You probably could but what I find more interesting is what I saw when I took my Fonera+ apart. All the circuitry is there for the USB. However none of the pads have been populated. In fact if you look at:

http://home.earthlink.net/~fone/f/fourneras.jpg

You'll see the two side by side. A handfull of components and you could turn your fonera+ into a Fonera 2.0

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From the 1.5 to the 2.0 these is a pretty big difference. Not only are they having to now power the fon, but you have added a usb port which requires more power and a way to process the data.

And someone had pointed out that by adding the SD card all you are doing is bit banging so it is very slow if you wanted to use it to log data.

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From the 1.5 to the 2.0 these is a pretty big difference. Not only are they having to now power the fon, but you have added a usb port which requires more power and a way to process the data.

And someone had pointed out that by adding the SD card all you are doing is bit banging so it is very slow if you wanted to use it to log data.

That was me. The WRT was bit banging, using GPIO. However looking very briefly at the fonera they appear to be using a different method.

From some cursory research the Fonera 2.0 uses a nec d720102Gc controller chip. This appears to be a popular chip and there a chance, albeit a shot in the dark that if you were to buy a the PCI card that see when you Google "nec d720102Gc" There may be enough to get it working on the Fonera+. The big assumption is that the Fonera 2.0 is using a standard reference design. I'm trying to locate the data sheet for the USB controller. A high res picture would make it easier to figure out. Correlate the resistor values to the datasheet's reference designs and assume that capacitors would be the same (they don't silkscreen the capacitors so there's only one way to figure out their value)

It just might work.

http://www.necel.com/usb/en/product/upd720102.html

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