I remember hearing about that wheelchair motor -- if
it's the same one,
last I heard Robb had wanted to use it to raise/lower a projection screen
for the stage..? So I didn't think of it for this project, but if we can
use it and save ourselves some money, that's great!
I realize you may have already considered this aspect but as a DIY opener
will also need to comply with code requirements, do you think you can
design a system measurably compliant with:
- opening / closing force (<5lb) and speed (max. *N* seconds to close)
requirements throughout the swing, during automatic operation and manual
operation per ANSI/BHMA A156.19 for low-energy-operated doors, ICC A117.1,
ADA and whatever may be found in CBC?
- req'd UPS / backup battery power for opener, for *N* many operations
(need to look it up)
- compliant location of upper and lower door actuators (buttons), assume
this will be no issue
If it's helpful, here is a decent article I found that glosses the subject
of codes for low-energy openers:
Given the above, and I realize I only now just brought this up to you, but
I guess my only concern about any DIY implementation is, if you / access
group has the time to implement it relatively soon..? E.g., do you think it
might be possible to complete in the next 2-3 weeks or so..?
I realize perhaps that is an unfair question to ask before you've really
started hacking on it, but I'm also trying to be realistic and pragmatic
wrt to how busy everyone is and the understandably extended timelines of
volunteer labor in general that comprises the bulk of omni efforts --
If after reviewing the door req's, you think a DIY system is doable in the
next 2-3 wks, let me know how / when I can help hack on this and I will
follow up with you and access control group directly -- and perhaps we can
set a date to meet up about it?
On Mon, Jan 16, 2017 at 12:20 AM, Maureen Muldavin <muldavin.m(a)gmail.com>
If you are working on RFID cards any possibility
that the entrance to
sudo/ccl could get a card reader? Been wanting access control for
On Sun, Jan 15, 2017 at 11:46 PM, Jake <jake(a)spaz.org> wrote:
i brought in a wheelchair motor a while ago that
I think could be made
power door-opener pretty well.
I can work on a proof-of-concept for that and then be able to show you
mean, and then we can see if it will be good enough for our needs as
spending $2800 on a "proper" door opener.
as for the RFID cards, Alex and I have been working on implementing the
reader thing for a little while and I think I can
add it to the front
pretty relatively easily.., and I guess i'll
do that first, rather than
to do a storage closet first?
as always, if anyone wants to participate in this process they should
definitely jump in, otherwise it's subject to my chaotic schedule.
technical questions about making this happen should be sent to the access
and possibly the sudoroom list, but probably not the building list as it
be a major distraction if we get into the weeds of microcontroller boards
door server code...
also, yes I do have the box of RFID stuff you ordered and i've been
On Sun, 15 Jan 2017, David Keenan wrote:
> Hi Jake / access control folks -
> So now that our front door is publicly labelled as accessible, we need
> install an automatic door opener & remote
button (kickplate &
> or a long bar) to make it legal.
> Reason I bring this up to you guys is, the opener system will need to
> integrate into our existing/future access control somehow. The quote I
(50% parts, 50% labor) for a package including the Open Sesame
Model 233 (brochure
> made in San Leandro.
> Also, some of us met last week re: sketching out Omni's accessibility
> and Yar suggested this might be a good time to also implement RFID
> for the front door, if that was possible? In
part because, proximity to
> RFID fob is more accessible than a card swipe
which (after thinking
> it) I realized requires a pincing motion that
is likely not ADA...
> of the excessive door opening pressure and
iffy slope on the front
> we need an RFID & auto-opener.
> So -- I'm not sure if any more work has been done on the RFID systems I
> in sudo a little while ago (stashed in under-stair storage area), might
> be possible to integrate these into the door
opener? I note in the
> they offer a keypad access option - perhaps an opportunity for 2-factor
> authentication like Marc had talked about? Anyhow what do you guys
> I apologize for not helping y'all more with a better access control
> (helping spaces post-ghostship consumed my
bandwidth), but as there is
> renewed pressure I want to help as I can.
Would installing a trial
> RFID/throw on the Omni Office for example still be helpful towards
> this nailed down? Lmk
> Fwiw - I see the opener as pressing at this point not just 'cause its
> overdue, but because every day our front door
is labelled as accessible
> when it's technically not, is actually a not-insignificant liability
> (accessibility lawsuit). Plus of course, we
are still under scrutiny by
> city, nimby neighbors trying to call us out for bogus reasons, etc etc.
> per building code the front door must be made fully accessible before
accessibility work starts on the rest of the building - at some
an inspector's gonna notice since they all go through that door..anyhow.
Let me know how myself & those of us working on accessibility might be
to help -