[dms-discuss] electronic keys are down, for now

Braden Pellett braden at davismakerspace.org
Tue Oct 22 15:54:00 PDT 2013


Oh my, I didn't realize the extent of the damage... i.e. to the extent that there would be pieces on the floor...

Lucian: was their any obvious physical damage to the deadbolt mechanism after the continuous unlocking attempts you observed while there yesterday evening?

Thanks,
  Braden


On Tue, Oct 22, 2013 at 03:34:19PM -0700, Tim Feldman wrote:
> October 22, 2013
> 
> Hi Braden and all --
> 
> I stopped by the space this afternoon and noticed that the automatic deadbolt mechanism was damaged. I found some of the pieces on the floor, bought others, repaired the mechanism, and while testing it I saw that the BBB would not stop trying to unlock the deadbolt. Since that is not an acceptable failure mode, I unplugged the BBB, left voicemail for Braden, and told Nick.
> 
> The deadbolt mechanism still is live and still works, so if somehow somebody is in the space without a key and needs to leave, they can still push the button on the mechanism to make it lock the deadbolt.
> 
> Later I received Braden's email and learned of the BBB bug (would that be a BBBB ?). It seems unlikely that nonstop attempts to unlock the door would make the mechanism come apart. But I'll keep an eye on the mechanism nontheless.
> 
> Cheers!
> 
> -- Tim F
> 
> 
> --------------------------------------------
> On Tue, 10/22/13, Braden Pellett <braden at davismakerspace.org> wrote:
> 
>  Subject: [dms-discuss] electronic keys are down, for now
>  To: "Davis Makerspace" <discuss at lists.davismakerspace.org>
>  Date: Tuesday, October 22, 2013, 2:58 PM
>  
>  Hi all,
>  
>  For the moment, the electronic door locking mechanism is
>  down.  Physical keys only for now until it is fixed.
>  
>  Basically after a recent upgrade to the OS on the door
>  control computer, it looks like a bug was tripped in my code
>  that would cause the process to die without cleaning up
>  after itself, thus if this occurred while the door was being
>  unlocked, it would continuously try to unlock it.
>  
>  This happened at least once yesterday, and now it happened
>  again while Tim was there, and he sent me a message that he
>  has deactivated the computer until the issue can be
>  resolved.
>  
>  It sounds like the continuous unlock cycle caused some
>  damage to the physical mechanism as well, though I'll let
>  Tim speak to that.
>  
>  I'm very sorry that my code caused this problem.
>  
>    - Braden
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