From: <tim...@co...> - 2006-10-06 00:35:36
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I agree, but their is no easy connection for vcc. I am connecting to the 20 pin solder pads on the STUART board. And only GND is available. The spec does say +/- 10 mA or +/- 3 mA depending in which GPIO used. -------------- Original message ---------------------- From: kris duff <t_...@ya...> > If I could give you a small advice, when connecting > LED to any microcontroller/microprocessor, I prefer > to plug them in sinking mode. So, you plug the LED to > the power (VCC). You have to activate the LED using a > logical 0. So the device sink the current. It's > easyer of the device to sink than to power the LED. > Usually, the device can sink more current than drive. > > > --- tim...@co... wrote: > > > Here is the 20 pin connector chart: > > http://docwiki.gumstix.org/20pin_connector_chart > > > > My question is what are the max current drive of > > each I/O? > > I connected some signals to some LEDS via 390 ohm > > resistor. > > I can see that some outputs glow brightly and others > > are > > dim. The spec says their are 2 different drives, 10 > > and 3 mA. > > > > > > > ------------------------------------------------------------------------- > > Take Surveys. Earn Cash. Influence the Future of IT > > Join SourceForge.net's Techsay panel and you'll get > > the chance to share your > > opinions on IT & business topics through brief > > surveys -- and earn cash > > > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > > _______________________________________________ > > gumstix-users mailing list > > gum...@li... > > > https://lists.sourceforge.net/lists/listinfo/gumstix-users > > > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys -- and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > gumstix-users mailing list > gum...@li... > https://lists.sourceforge.net/lists/listinfo/gumstix-users |