That is my secret. I don't need coffee! The inside story is that I am always here. I have no life!
Gerald On Thu, Mar 6, 2014 at 9:25 AM, Eric Palmer <e...@ericfpalmer.com> wrote: > Yes I get that. > > > On Thu, Mar 6, 2014 at 10:14 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 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 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.
