On Fri, 17 Jul 2020 12:00:03 -0400 (EDT), in gmane.comp.hardware.beagleboard.user Robert Heller <heller-2/ccJrXdU8tWk0Htik3J/[email protected]> wrote:
>At Fri, 17 Jul 2020 15:39:50 +0100 >beagleboard-/[email protected] wrote: > >> >> Using USB power supply, 5V 2A > >I don't think that might work well. You might do better to use the Coax jack >instead. *Technically* the USB is only good for 500MA, per the USB spec. I >don't know if the BBB imposes that limit or not. By the USB2 spec, the device is supposed to start at a 1unit load (100mA, maybe 125mA), and negotiate for the 500mA load. However, charging supplies might provide more at all times or if the device asks for the high level. But yes -- for anything that takes current (if the board is powering peripherals, and recommended when flashing the eMMC) using the barrel connector is recommended. USB-C connectors (as found on the BB AI), follow a different spec, and can provide higher power (I believe they have multiple sets of ground and 5V pins). -- Dennis L Bieber -- 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/npp3hfhcj30873lafob8kqla7kj174p654%404ax.com.
