On 11/11/2013, at 19:44, hvn...@gmail.com wrote: > Hi, > > I connected a mechanical device to 1 of the USB A ports and this device has a > PID update rate of 1 kHz. Instead of make a nice movement as it did on a pc, > it started to oscillate. I searched for update rate info in the board manual, > but found nothing. Can anyone tell me what the USB A update rate of the board > is ? Or the turn around time ? > > Thanks.
To hvn052: You have not connected a mechanical device to an USB port.... You have connected a device which has mechanical and electronic parts to the USB port of the Beagle Bone. And you have in the PID loop, software that runs on the Beagle Bone. All the USB timings are known from the USB specifications, but as you have your software in the loop, asking someone on the Internet what is the update rate of your software, seems very wishful thinking. Please try an oscilloscope. Best regards Paulo Ferreira -- 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/groups/opt_out.
