From: Agustin H. <ah...@gm...> - 2007-04-16 22:35:45
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Thanks a lot! i had the this problem i have revision 341, and as you said there are no phisical conexion. if i used a robostix standalone mode i dont need pull up the 10 k resistors? 2007/4/16, Dave Hylands <dhy...@gm...>: > > Hi Augstin, > > > I was working with tachometer program, rigth now i can see the blue led > > changing with the frecuency, but i can see the data in UART0 port, Im > using > > max232 to change the voltage levels i didnt check if the power or the > > robostix regulator was enougth(?). Other thing that is rear is the > voltage > > betewen power pins give me 200mV when nothing is conected, only in > UART0, > > the other three ports seems be fine. im worried about... > > My UART0 is burned? > > Are you using a robostix in standalone mode? Or with a gumstix? Which > revision of robostix board? > > Be aware that the Gnd pin on the UART-0 connector isn't connected on > the early robostix. See: > < > http://docswiki.gumstix.com/Robostix_modifications#Ground_Wire_Fix_.28robostix_revisions_prior_to_1131.29 > > > > The power pin on the UART connector is called V_BATT and you should be > measuring 5v on this pin (although if you were using the ground on the > same port and it was floating, then that could explain what you're > seeing). > > -- > Dave Hylands > Vancouver, BC, Canada > http://www.DaveHylands.com/ > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > |