:) Attempts at humor on only one cup of coffee might not be so funny!
On Thu, Mar 6, 2014 at 9:14 AM, Gerald Coley <ger...@beagleboard.org> wrote: > I am not sure how to take that!Not sure if it is luck or something else. > > Gerald > > > > On Thu, Mar 6, 2014 at 9:12 AM, Eric Palmer <e...@ericfpalmer.com> wrote: > >> Awesome >> >> Gerald we are lucky to have you on this mail list and be participating so >> much. >> >> Thanks >> >> >> On Thu, Mar 6, 2014 at 10:09 AM, Gerald Coley <ger...@beagleboard.org>wrote: >> >>> Yes you can do that Use the 3.3V to enable the regulators. >>> >>> Gerald >>> >>> >>> >>> On Thu, Mar 6, 2014 at 9:03 AM, Matthew Witherwax <ablec...@gmail.com>wrote: >>> >>>> Thanks Gerald. That is exactly the response I was expecting and >>>> exactly the feeling I had. Never really like playing Russian roulette >>>> myself. Do you see any issue with powering the sensors via a voltage >>>> regulator like http://www.pololu.com/product/2098 that can be turned >>>> on via a pin on the BBB once it is up and running? >>>> >>>> >>>> On Thu, Mar 6, 2014 at 8:58 AM, Gerald Coley <ger...@beagleboard.org>wrote: >>>> >>>>> I put that in there for a reason. It may not happen all the time, but >>>>> eventually you could blow up the processor. >>>>> >>>>> Gerald >>>>> >>>>> >>>>> On Thu, Mar 6, 2014 at 8:56 AM, Matthew Witherwax >>>>> <ablec...@gmail.com>wrote: >>>>> >>>>>> As part of the Control of Mobile Robotics class offered through >>>>>> Cousera, the students are building robots based around the BeagleBone >>>>>> Black. The robot has 5 infrared distance sensors and 2 reflectance >>>>>> sensors >>>>>> used for odometry. These sensors are connected via voltage dividers to >>>>>> pins 33, 35, 36, 37, 38, 39, and 49 of P9, and are powered from the same >>>>>> power supply used to power the BeagleBone Black. The System Manual has a >>>>>> rather explicit warning: >>>>>> >>>>>> NOTE: DO NOT APPLY VOLTAGE TO ANY I/O PIN WHEN POWER IS NOT SUPPLIED >>>>>> TO THE BOARD. IT WILL DAMAGE THE PROCESSOR AND VOID THE WARRANTY. >>>>>> NO PINS ARE TO BE DRIVEN UNTIL AFTER THE SYS_RESET LINE GOES HIGH. >>>>>> >>>>>> My concern is the current arrangement would allow the sensors to >>>>>> begin driving the pins before the SYS_RESET line goes high; however, I >>>>>> am a >>>>>> software guy just starting down the hardware path. Thus far many in the >>>>>> class have been using the robot without issue. Is my concern invalid? >>>>>> >>>>>> Thank you for your time. >>>>>> >>>>>> -- >>>>>> 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/groups/opt_out. >>>>>> >>>>> >>>>> -- >>>>> For more options, visit http://beagleboard.org/discuss >>>>> --- >>>>> You received this message because you are subscribed to a topic in the >>>>> Google Groups "BeagleBoard" group. >>>>> To unsubscribe from this topic, visit >>>>> https://groups.google.com/d/topic/beagleboard/_5Puwswy-RQ/unsubscribe. >>>>> To unsubscribe from this group and all its topics, send an email to >>>>> beagleboard+unsubscr...@googlegroups.com. >>>>> >>>>> For more options, visit https://groups.google.com/groups/opt_out. >>>>> >>>> >>>> -- >>>> 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/groups/opt_out. >>>> >>> >>> -- >>> 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/groups/opt_out. >>> >> >> >> >> -- >> Eric Palmer >> >> -- >> 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/groups/opt_out. >> > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to a topic in the > Google Groups "BeagleBoard" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/beagleboard/_5Puwswy-RQ/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. 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