Next time you are in Houston, coffee is on me! On Thursday, March 6, 2014 9:28:06 AM UTC-6, Gerald wrote: > > 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 > <er...@ericfpalmer.com<javascript:> > > wrote: > >> Yes I get that. >> >> >> On Thu, Mar 6, 2014 at 10:14 AM, Gerald Coley >> <ger...@beagleboard.org<javascript:> >> > 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 >>> <er...@ericfpalmer.com<javascript:> >>> > 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<javascript:> >>>> > 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 >>>>> <able...@gmail.com<javascript:> >>>>> > 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<javascript:> >>>>>> > 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 >>>>>>> <able...@gmail.com<javascript:> >>>>>>> > 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...@googlegroups.com <javascript:>. >>>>>>>> >>>>>>>> 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...@googlegroups.com <javascript:>. >>>>>>> >>>>>>> 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...@googlegroups.com <javascript:>. >>>>>> 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...@googlegroups.com <javascript:>. >>>>> 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...@googlegroups.com <javascript:>. >>>> 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...@googlegroups.com <javascript:>. >>> 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...@googlegroups.com <javascript:>. >> For more options, visit https://groups.google.com/groups/opt_out. >> > >
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