Hi Paul, thanks for your suggestion. But my first idea was to make it for a computer without serial port output. Then you could say that I just need an usb to serial adapter. Well, it could be an idea, but I feel it seems embarrassing not be able to communicate to the out world without buying external circuits. I mean, we could do it back in 90's without a problem just writing to parallel port addresses. It seems I cannot even turn a led on (and off, ;) ) without using an integrated circuit out there. If anyone could tell me how to do this simple thing without a controller out there, I'd be pleased. Thanks Paul, best regards On Fri, Mar 13, 2009 at 7:40 PM, Paul Thomas <pthomas8589@xxxxxxxxx> wrote: > Daniel, > > What's wrong with serial? Like this http://opencircuits.com/Linuxstamp#Servos > > thanks, > Paul > > On Fri, Mar 13, 2009 at 3:36 PM, Daniel Lelis Baggio > <danielbaggio@xxxxxxxxx> wrote: >> Hi, >> >> I would like to know if it is possible to plug a servo to USB by >> directly attaching the usb host data out to the servo control channel, >> through a host generated pwm (digital signal output). >> As usb requires a handshake and there would be no response from the >> USB device (since it would be a dummy device, that would only read the >> usb host signal), I would like to know if we can make the usb host >> controller believe that the servo has answered the enumeration >> (through a fake usb signal we would generate in the computer) and then >> start sending the data to the servo, just like we used to do in >> parallel ports (I mean, I know it's not parallel, but there was no >> need to get feedback from the device in parallel ports if we didn't >> want to). >> >> Thanks in advance, >> Daniel >> >> -- >> =================================================== >> Daniel Lelis Baggio danielbaggio@xxxxxxxxx >> >> URL: danielbaggio.blogspot.com >> PGP key: 0x49C123B6 @ http://keyserver.ubuntu.com:11371 >> =================================================== >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-usb" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > -- =================================================== Daniel Lelis Baggio danielbaggio@xxxxxxxxx URL: danielbaggio.blogspot.com PGP key: 0x49C123B6 @ http://keyserver.ubuntu.com:11371 =================================================== -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
