I'm thinking of using something like http://www.thinkgeek.com/product/eecf/
in a project involving many types of readers, and an actual robot-arm a la http://www.lynxmotion.com/c-130-al5d.aspx to shove various cards into them in all kinds of ways and permutations. I'd prefer a "managed USB hub" if such a thing exists, which would allow individual port powering from software, but with the fairly cheap one on Thinkgeek, every port has a power switch and so the robot could push those as well, to power the readers one by one. (planned for Q2 2013). Building such a thing yourself would involve a switching transistor for the VCC pin of each port, it would have been more economical to solve it with a column/row trick e.g. GND on columns and VCC on rows, but that won't work because you need to power the readers one by one and you can't power off readers that you had powered on before... -f On 11/09/2012 03:46 PM, Jean-Michel Pouré - GOOZE wrote: > Dear all, > > Thank you for the previous answer. > >> > I don't expect many readers to have serials readable from the chipset. >> > It's bound to be more expensive to manufacture and most go for minimal >> > manufcaturing costs. Either you'll have to build your bench using a >> > type >> > of cardreader that does.. or.. >> > make the power to the readers selectable from software, power up the >> > readers one by one, see them appear on the USB bus and associate >> > reader to id in that way. It would mean your bench would get more >> > complex, more expensive, and would take longer to "boot", but it >> > should work with all types of readers, USB hubs, kernel modules.. >> > etc.. > OK, understood. > > Thank you. _______________________________________________ Muscle mailing list [email protected] http://lists.drizzle.com/mailman/listinfo/muscle
