Author Topic: BBB not starting when powered from cape  (Read 614 times)

Offline AAH

  • Hero Member
  • *****
  • Join Date: Jul 2014
  • Location: Australia
  • Posts: 713
  • Kudos: 19
  • Blinky blinky blinky
    • I love blinky lights
BBB not starting when powered from cape
« on: March 19, 2016, 07:03:03 PM »
If using the 5V connector to power a BeagleBone Black (BBB) from 1 of my Octoscrolla or similar boards that allow the BBB to be powered via the headers rather than the power connection then some/all BBB variants require a fast voltage rise of the 5V for the power circuitry in the BBB to be happy and to power up. Some power supplies don't meet the 500us (?) rise time for the BBB power IC so a switch to turn on the 5V after the power supply has been turned on is an alternative. I had issues myself with my Chinese made 350W 5V supply than ran my P10 matrix.

Offline tmarshall

  • Full Member
  • ***
  • Join Date: Jan 2016
  • Location: Atlanta, GA
  • Posts: 115
  • Kudos: 3
Re: BBB not starting when powered from cape
« Reply #1 on: March 22, 2016, 06:25:01 AM »
Good to know. I am awaiting my BBBs but I have several of your Octoscrolla boards

Thanks for the headsup.


Back to top