Please Help!! Single Board Computer and USB

It's not an easy question. Host-side USB is very difficult to implement. Yes it can be done. Trying to do it - especially inside Rabbit's baroque, nonstandard environment - is very painful. I would abandon the idea of USB and interface directly to a media type, e.g. CompactFlash.

The problem is that I have to be able to read data from a digital camera. All of the lower end Digital Cameras only have a USB interface. Any suggestions?

So don't use those cameras, then. Actually I don't think there are all that many cameras around that have a USB port but no removable storage media. Well, setting aside dedicated webcams, that is.

If you are talking about cameras with non-removable media (webcams, pencams) then I've got one word for you: Fuggedaboutit. You would need to write drivers for every single camera chipset out there. You would need to keep updating VID/PID tables, at least, practically on a daily basis to keep up with new product releases. The ONLY way you can contemplate supporting those sorts of cameras is via a mainstream OS where someone else is doing the driver work for you.

If you are talking about cameras with removable media - Support the media directly. It's much less trouble!

The easiest to do this is to get a module / device that does most of the stuff for you. Atmel has a number of USB host devices which looks fairly easy to hook up to an embedded micro. AFACR they already support the profiles needed for accesing a USB flash disk or similar device.

Regards Anton Erasmus

Have a look at

Has anyone priced these? I usually buy QTY=1,000 for a prototype and then satrt putting in regular QTY=100,000 to QTY=1,000,000orders once production starts, so those are the prive points I am interested in.