[AR] Re: Flight Computer

  • From: Robert Watzlavick <rocket@xxxxxxxxxxxxxx>
  • To: arocket@xxxxxxxxxxxxx
  • Date: Mon, 21 Dec 2015 21:11:51 -0600

That's weird - I would think any reasonable PCB would stand up to vibration the same as any other. However, I have a BBB and just looking at it, I would suspect the power and/or USB connections as potential failure points. In a previous life, we had to delete the planned vibration specs for a product the USB connector failed vibration tests. Good to know though - thanks for the tip.

I was trying to figure out the best way to check out my flight computer setup for vibration. I don't have access to a shaker table so I thought I would strap it to my truck bumper and drive it around for a while. A few miles over our pothole-laden roads should be a pretty good test, at least for random excitation.

-Bob

On 12/21/2015 04:25 PM, doug knight wrote:


Not robust. Mount was good but jostling around the device had it run intermittently. Worked well on benchtop but not repeatable at launch site. And did not work at all in launches. Scraped and went to arduino and problems disappeared. This was a couple years ago also. Of course Arduinos have other limitations so

Doug Knight.

On Dec 21, 2015 3:25 PM, "Robert Watzlavick" <rocket@xxxxxxxxxxxxxx <mailto:rocket@xxxxxxxxxxxxxx>> wrote:

What kind of problems did you run into? I considered the
BeagleBone Black with FreeRTOS but ended up going with the
Netburner MOD54415.

Monroe - I glanced over the OSAL stuff a while back and it looked
very sophisticated but I don't think it's a turnkey system. I
think it's more a set of middleware building blocks (messaging
stack, file system, etc.). If you have the time to invest in it,
it would be interesting to see how useful it turns out to be.

-Bob

On 12/21/2015 01:13 PM, doug knight wrote:


Monroe

I did not haveagood experience with beaglebones and hobby high
power rockets. They did not seem very robustly all. Of course
YMMV.

Doug Knight





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