Sir, I just found a source for ideas: https://next-hack.com/index.php/2017/09/15/how-to-interface-a-5v-output-to-a-3-3v-input/. Adding a button and software could prove valuable. If anything, it may help a bit.
Seth P.S. GPIO works for buttons, LEDs, and other circuitry. I am sure you know how to do things. I was trying to latch on to learn more. Sorry. On Saturday, February 9, 2019 at 11:19:47 PM UTC-6, Dan Hammans wrote: > > Hi Seth, I really appreciate the reply. > > I was afraid of that. My GPS module requires +5v. Is there another +5v > source on the board that is switched off when the board powers down? What > about the black power connector above the GPS UART port? > > Otherwise it looks like I will be building a resistor circuit and > triggering it from a GPIO pin. > > On Saturday, February 9, 2019 at 11:07:14 PM UTC-6, Mala Dies wrote: >> >> Sir, >> >> Seth here. I just got done dealing w/ someone on this subject. The 5v pin >> from the GPS connection cannot be "un"powered. It stays powered on while >> the board has power. >> >> Seth >> >> P.S. Try UART instead at 3.3v. This may help. >> >> On Saturday, February 9, 2019 at 2:58:12 AM UTC-6, Dan Hammans wrote: >>> >>> I'm not sure that I understand the difference between the Beagleboard >>> forum and the Beaglebone forum, but thought I would try posting here as >>> well. >>> >>> I have a Beaglebone Blue connected to a GPS module via the GPS micro JST >>> connector. I selected this one because it has +5v, which is what is needed >>> for my GPS as opposed to 3.3v on the other UARTs. >>> >>> The GPS module works correctly, but my issue is I can't power it down. >>> It's been suggested that the 5v rail can't be shut down with the battery >>> connected, but that seems rather odd to me. The also suggested solution was >>> to use a transistor to switch 5v power via a 3.3v GPIO pin. I suppose >>> that's a solution but not a very elegant one if the board can be somehow >>> configured to power off the 5v rail. It seems like this should be possible, >>> albiet not easily accessible. There doesn't seem to be much/any >>> documentation available about this at all. >>> >>> I made a Youtube video showing what's going on; >>> https://www.youtube.com/watch?v=9xrXKRy97Yk >>> >>> Any suggestions appreciated, otherwise I think I'm going to have to go >>> down the path of the transistor relay... >>> >>> >>> -- 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/4eef6bfc-c9e5-4cd1-be04-d952fcc8060e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
