Looking at it some more it looks like you are only trying to power one of the three rails. The blinking might indicate it is missing the 3.3V rail and the SYS_5V rail.
On Mon, Dec 23, 2013 at 4:05 PM, Daniel Metcalf <[email protected]> wrote: > I am not sure you can power it that way. I am a newbie to beaglebone black > but checkout page 110 of 124. > Pin 5 of J9 is VDD_5V which is described as the following: > > *VDD_5V *is the main power supply from the DC input jack. This voltage is > not present when the board is powered via USB. The amount of current > supplied by this rail is dependent upon the amount of current available. > Based on the board design, this rail is limited to 1A per pin from the main > board. > > I believe it is an output from a regulator. > > You are going to want to connect to TP5 - BAT, TP8 - GND, TP6 - SENSE > > > > > On Mon, Dec 23, 2013 at 3:30 PM, José Luis Redrejo <[email protected]>wrote: > >> I've made a power supply to power my BBB, but whenever I connect it >> (to pins 5 & 1 of P9 connector for VDD & GND), the power led blinks >> for some seconds and then it is off. >> >> The output comes from a 7805CKCT, which can provide up to 1.5A. >> >> It's a typical power supply from a rectifier + capacitors + regulator. >> >> What does this "blinking" mean? any ideas of what is going wrong? >> >> Regards >> José L. >> >> P.S. The board works perfectly plugging it to a computer via USB >> >> -- >> 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/groups/opt_out. >> > > > > -- > Dan Metcalf -- KB3UUN > > -- Dan Metcalf -- KB3UUN -- 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/groups/opt_out.
