Excellent! It is usually something simple. Gerald
On Tue, Jul 28, 2015 at 10:51 AM, Carlos Novaes <carlos...@gmail.com> wrote: > Fount it. > In the circuit drawing I connected P9.10 (SYS_RESETn) to the gate of the > transistor 2n7000, but in the universal board I connected P9.9 (PWR_BUT). > Now the board is booting up every time. > > > > > Le samedi 25 juillet 2015 16:15:46 UTC-3, Carlos Novaes a écrit : >> >> ehhr... >> dont know why, but the pdf file does not open correctly on google docs. >> Some connectors are not displayed, although the connections to the BBB >> itself are perfect visible. Downloading and opening with a pdf viewer >> (okular, acrobat...) works perfectly. >> >> Le samedi 25 juillet 2015 16:06:42 UTC-3, Carlos Novaes a écrit : >>> >>> Hi. >>> Sorry for the delay, attached is a pdf with the schematic. I tried to >>> take some pictures of my wiring and also to triple check the connections, >>> but the lab was closed for fumigation. >>> >>> Some other points are: >>> -> I am using both PRUs to read some encoders and generate four PWM >>> signals (10bits @ 12KHz). In this schematic only the encoder inputs are >>> complete. >>> -> I am powering this cape with a switched industrial grade power >>> supply. When I power up the board from the DC jack I am using a cheap >>> adapter (also switched). >>> -> If I power up from usb and after the board boot process I connect the >>> power to the extension cape, then I can read one encoder (have not tested >>> the others but they should). >>> >>> Thank you, >>> >>> Carlos Novaes >>> >>> Le vendredi 24 juillet 2015 18:43:39 UTC-3, Gerald a écrit : >>>> >>>> >>>> Not sure what you are doing wrong, hard to tell. >>>> >>>> What is your power source? >>>> Is it grounded? >>>> How much current can it supply? >>>> Can you send a picture of your wiring? >>>> >>>> Gerald >>>> >>>> >>>> On Fri, Jul 24, 2015 at 4:37 PM, Carlos Novaes <carl...@gmail.com> >>>> wrote: >>>> >>>>> Pins P9.5 and P9.6 are supposed to be connected to the DC power jack, >>>>> as stated in the BBB System Reference Manual (figure 23, and explicit >>>>> stated in page 113). So, I am using a external power supply at P9.1 ~ >>>>> P9.2 >>>>> as GND and P9.5 ~ P9.6 as +5V. The power led goes up but the board does >>>>> not >>>>> start to run and no other leds will blink. If I power up from DC jack or >>>>> usb cable, everything goes as expected, so I ask if I am doing something >>>>> wrong or should connect the other gnd pins. I double checked the >>>>> connections and they are ok. >>>>> >>>>> Thanks, >>>>> >>>>> -- >>>>> Carlos Novaes >>>>> >>>>> -- >>>>> 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 beagleboard...@googlegroups.com. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> >>>> >>>> -- >>>> Gerald >>>> >>>> ger...@beagleboard.org >>>> http://beagleboard.org/ >>>> >>> -- Gerald ger...@beagleboard.org http://beagleboard.org/ -- 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
