In this particular case I am trying to reduce the number of power supplies required.
I'd like to use a single DC power source for both the hub and the BBB. The question is whether the BBB should supply additional power to the hub through the 5V header on the BBB or bypass the BBB altogether for power. Is there some kind of over current or ground loop that would be introduced that would cause undesired effects? I'm worried about bricking the board and I'd like to know the "safe" way to do this. Thanks-Wesley On Thursday, 24 July 2014 12:54:15 UTC-6, Gerald wrote: > > Plug in a power supply to the external HUB. > > Gerald > > > > On Thu, Jul 24, 2014 at 11:32 AM, <[email protected] <javascript:>> > wrote: > >> I have a beaglebone black. the challenge I face is that I require >> multiple powered USB devices to be connected to it while only using one >> power source - the BBB 5V DC connector >> >> 1 - USB Camera - Logitech C920 >> 1 - USB GPS Antenna >> 1 - USB WiFi Adaptor >> 1 - USB Bluetooth Adaptor >> >> Clearly the onboard USB port cannot supply enough power using an >> unpowered hub to bring these devices up. >> >> How would I wire the external powered hub to the Beaglebone Black to >> satisfy the single power source requirement? >> 1) Would I tie +/- to the same DC power source before the BB and somehow >> adapt the USB cable for TX/RX only thus bypassing the board for the power >> on the hub? >> >> >> hub | ===tx/rx USB===|bbb 5v|======+/- >> | +5V-------------------------------------| | >> | gnd----------------------------------------| >> >> 2) Would I use the +/-5V expansion header and somehow adapt the USB cable >> for TX/RX only? thus using the BB to supply power? >> >> hub | ===tx/rx USB===BBBUSB >> | +/-----------------------| bbb expansion header 5v |======+/- >> >> I tried scenario 1 already and somehow destroyed my BB (won't boot, no >> LEDs - looks like a brick), bit hesitant to try 2) as I don't want to brick >> another. >> >> I am not an electrical engineer. >> >> >> >> >> Thanks-Wesley >> >> >> >> -- >> 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] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > > -- 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/d/optout.
