Well, I've overcome the problem. I was using a GPIO as GND to the ESC. This was convenient since those pins are next to each other. Once I used true GND, then the problem went away.
But why would using a GPIO as a GND cause a shutdown? I know it will restrict the amount of current sinked due to having to flow through an extra FET. On Saturday, May 10, 2014 9:38:55 PM UTC-7, Uncle Joe wrote: > > Help, I'm struggling to drive a simple ESC and brushless motor combination > with the Beaglebone. I've already spent 1/2 a day figuring out the right > arming sequence (caused by a +- 0.01 ms error in timing). > > But once I arm the ESC, the Beaglebone shuts off immediately. Most of the > time, it shuts off right when it starts spinning up. Sometimes it even > shuts off on one of the beeps the motor makes indicating the ESC is arming. > > Here's my setup: > Revolver Stubby motor > || > || > 850W PSU =====12V===== ESC ===3.3V=== BeagleBone > > The PSU is an Antec 850 high current gamer. I've disabled over-current, > over-voltage, and under-voltage protection on it, so the power draw can be > alot (enough to make the lights flicker when the motor starts). > > > The BeagleBone is powered by USB and should be buffered against surges > caused by the motor PSU. > What could be the problem? > > > -- 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+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
