Is your 12V GND connected to the BBB DGND? Regards, John
> On Feb 17, 2016, at 10:23 PM, [email protected] wrote: > > Hi all, > > I'm working on setting up a BBB to drive some LEDs. I'm using ws281x LEDs, > which require 12V+ and 5V data signals. I have a separate level converter > circuit which steps up the data outputs from 3.3V to 5V. However, I am > getting no illumination when I ground the LEDs with the BBB's DGND. > > Interestingly, my multimeter shows no potential drop between the external > supply's 12V+ and DGND (yes the external supply is turned on ;) ), even when > measured with the external level converter circuit completely detached. > > I'm a little stumped here. Shouldn't 12V+ from my supply to DGND on the BBB > measure about 12V? I have the BBB powered from the barrel connector. I feel > like I might be missing something simple... > > -- > For more options, visit http://beagleboard.org/discuss > <http://beagleboard.org/discuss> > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
