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 <[email protected] > <javascript:>> 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 [email protected] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > Gerald > > [email protected] <javascript:> > 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
BasicCape.pdf
Description: Adobe PDF document
