There is hope for us yet! -----Original Message----- From: "Gerald Coley" <[email protected]> Sent: 3/6/2014 10:45 AM To: "[email protected]" <[email protected]> Subject: Re: [beagleboard] When to power sensors connected to the BeagleBoneBlack?
But now you have Nolan Ryan. On Thu, Mar 6, 2014 at 10:36 AM, Matthew Witherwax <[email protected]> wrote: I sure hope that was years ago when they actually won a game or two. We have other attractions. We even almost have NASA. On Thursday, March 6, 2014 9:57:57 AM UTC-6, Gerald wrote: Houston! Us folks in this part of the state try to stay away from Houston! Actually I have spent a lot of time over the years in Houston. Been to a few Astros games as well. Gerald On Thu, Mar 6, 2014 at 9:55 AM, Matthew Witherwax <[email protected]> wrote: 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 <[email protected]> wrote: Yes I get that. On Thu, Mar 6, 2014 at 10:14 AM, Gerald Coley <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 [email protected]. 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 [email protected]. 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 [email protected]. 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 [email protected]. 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 [email protected]. 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 [email protected]. 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 [email protected]. 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 [email protected]. 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 [email protected]. 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 [email protected]. 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 [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
