<div dir="ltr"><div>view from above<br></div><div> \<br></div> X \<br><div><div> X \<br></div><div> X \<br></div><div> X \<br></div><div>_____X________<br></div><div>===----<br><br></div><div>what about using our actuator & assembling a scissoring mechanism poorly illustrated above?<br>===___ = actuator<br></div><div>X = scissor arms<br></div><div>\ = door<br></div><div>_ = wall above door<br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jan 19, 2017 at 3:23 PM, Jake <span dir="ltr"><<a href="mailto:jake@spaz.org" target="_blank">jake@spaz.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">note: this email goes to four lists. Please reply only to the Access and<br>
Building lists to avoid clogging Omni and Sudo lists with this thread.<br>
<br>
I just want to bump this thread and see if anyone is available to work on the<br>
physical aspects of the door opener I describe below, and as shown in this<br>
diagram:<br>
<br>
<a href="http://spaz.org/~jake/pix/omnidoormotor1.png" rel="noreferrer" target="_blank">http://spaz.org/~jake/pix/omni<wbr>doormotor1.png</a><br>
<br>
I am willing to do the electronics part of it and make it work with our<br>
existing system, but I would like others to help with the building of a bracket<br>
to hold the motor in place over the door, and the woodwork and nuts&bolts of<br>
making the 2x2 stick with steel cable attached to it.<br>
<br>
-jake<br>
<br>
<br>
On Tue, 17 Jan 2017, Jake wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
the wheelchair motor that Robb wanted to use for a projection screen<br>
raise/lower thing is something else.<br>
<br>
The motor I want to use for the front door opener is this one:<br>
<br>
<a href="http://imgur.com/gallery/MLuT7" rel="noreferrer" target="_blank">http://imgur.com/gallery/MLuT7</a><br>
<br>
it's in sudoroom in a milk crate. Robb and I remove the wheel and the tire,<br>
and now it's ready for the motor to be mounted on a bracket that will hold it<br>
in the right place, which is slightly higher than the top of the door, and<br>
basically 2' south of the door's hinges.<br>
<br>
then, a 2x2 of wood will attach to the top corner of the door with a hinge, and<br>
it will have a cord of this rubber-wrapped steel cable (which I have) go from<br>
one end of the 2x2 to the other, taking a couple of turns around the motor<br>
wheel. It will look like this:<br>
<br>
<a href="http://spaz.org/~jake/pix/omnidoormotor1.png" rel="noreferrer" target="_blank">http://spaz.org/~jake/pix/omni<wbr>doormotor1.png</a><br>
<br>
as you can see from this diagram, when the motor turns its wheel clockwise (as<br>
viewed from above) the 2x2 stick will be pushed in the direction that opens the<br>
door. If it's not clear, the rubber-wrapped steel cable (shown in red/black<br>
stripes) is attached to the 2x2 stick at both ends, but it makes a couple of<br>
turns around the wheel of the motor on its way.<br>
<br>
anyway, i chose this motor because when it's not being energized with<br>
electricity, it's free-moving which means it won't interfere with regular door<br>
movement. But when we activate it, it will be strong enough to open or close<br>
the door as we tell it to do.<br>
<br>
The issues you mention about battery backup are not a problem. We already have<br>
a battery backup for the front door card (and soon RFID) access system, and<br>
this motorized thing will be battery-backed as well.<br>
<br>
I am willing to do the electrical part of this project, and I have already<br>
acquired the rubber-coated steel cable and motor, but I ask that other people<br>
take care of mounting the motor on a suitable frame above the door and help<br>
make the 2x2 stick on a hinge which will attach to the door.<br>
<br>
I will be at sudoroom tomorrow night (tuesday night at 7) in case anyone wants<br>
to meet with me about this.<br>
<br>
-jake<br>
<br>
On Mon, 16 Jan 2017, David Keenan wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I remember hearing about that wheelchair motor -- if it's the same one,<br>
last I heard Robb had wanted to use it to raise/lower a projection screen<br>
for the stage..? So I didn't think of it for this project, but if we can<br>
use it and save ourselves some money, that's great!<br>
<br>
I realize you may have already considered this aspect but as a DIY opener<br>
will also need to comply with code requirements, do you think you can<br>
design a system measurably compliant with:<br>
<br>
- opening / closing force (<5lb) and speed (max. *N* seconds to close)<br>
requirements throughout the swing, during automatic operation and manual<br>
operation per ANSI/BHMA A156.19 for low-energy-operated doors, ICC A117.1,<br>
ADA and whatever may be found in CBC?<br>
<br>
- req'd UPS / backup battery power for opener, for *N* many operations<br>
(need to look it up)<br>
<br>
- compliant location of upper and lower door actuators (buttons), assume<br>
this will be no issue<br>
<br>
If it's helpful, here is a decent article I found that glosses the subject<br>
of codes for low-energy openers:<br>
<a href="http://www.constructionspecifier.com/understanding-new-accessibility-requirements-for-doors/" rel="noreferrer" target="_blank">http://www.constructionspecifi<wbr>er.com/understanding-new-acces<wbr>sibility-requirements-for-<wbr>doors/</a><br>
<<a href="http://www.constructionspecifier.com/understanding-new-accessibility-requirements-for-doors/" rel="noreferrer" target="_blank">http://www.constructionspecif<wbr>ier.com/understanding-new-acce<wbr>ssibility-requirements-for-<wbr>doors/</a>><br>
<br>
Given the above, and I realize I only now just brought this up to you, but<br>
I guess my only concern about any DIY implementation is, if you / access<br>
group has the time to implement it relatively soon..? E.g., do you think it<br>
might be possible to complete in the next 2-3 weeks or so..?<br>
<br>
I realize perhaps that is an unfair question to ask before you've really<br>
started hacking on it, but I'm also trying to be realistic and pragmatic<br>
wrt to how busy everyone is and the understandably extended timelines of<br>
volunteer labor in general that comprises the bulk of omni efforts --<br>
<br>
If after reviewing the door req's, you think a DIY system is doable in the<br>
next 2-3 wks, let me know how / when I can help hack on this and I will<br>
follow up with you and access control group directly -- and perhaps we can<br>
set a date to meet up about it?<br>
<br>
Best,<br>
David<br>
<br>
On Mon, Jan 16, 2017 at 12:20 AM, Maureen Muldavin <<a href="mailto:muldavin.m@gmail.com" target="_blank">muldavin.m@gmail.com</a>><br>
wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
If you are working on RFID cards any possibility that the entrance to<br>
sudo/ccl could get a card reader? Been wanting access control for<br>
awhile.<br>
<br>
On Sun, Jan 15, 2017 at 11:46 PM, Jake <<a href="mailto:jake@spaz.org" target="_blank">jake@spaz.org</a>> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
i brought in a wheelchair motor a while ago that I think could be made<br>
</blockquote>
into<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
a<br>
power door-opener pretty well.<br>
<br>
I can work on a proof-of-concept for that and then be able to show you<br>
</blockquote>
what<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I<br>
mean, and then we can see if it will be good enough for our needs as<br>
</blockquote>
opposed<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
to<br>
spending $2800 on a "proper" door opener.<br>
<br>
as for the RFID cards, Alex and I have been working on implementing the<br>
</blockquote>
card<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
reader thing for a little while and I think I can add it to the front<br>
</blockquote>
door<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
pretty relatively easily.., and I guess i'll do that first, rather than<br>
trying<br>
to do a storage closet first?<br>
<br>
as always, if anyone wants to participate in this process they should<br>
definitely jump in, otherwise it's subject to my chaotic schedule.<br>
<br>
technical questions about making this happen should be sent to the access<br>
list<br>
and possibly the sudoroom list, but probably not the building list as it<br>
will<br>
be a major distraction if we get into the weeds of microcontroller boards<br>
and<br>
door server code...<br>
<br>
also, yes I do have the box of RFID stuff you ordered and i've been<br>
</blockquote>
working<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
on<br>
it~<br>
<br>
-jake<br>
<br>
On Sun, 15 Jan 2017, David Keenan wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Jake / access control folks -<br>
<br>
So now that our front door is publicly labelled as accessible, we need<br>
</blockquote></blockquote>
to<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
install an automatic door opener & remote button (kickplate &<br>
</blockquote></blockquote>
hand-height<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
or a long bar) to make it legal.<br>
<br>
Reason I bring this up to you guys is, the opener system will need to<br>
integrate into our existing/future access control somehow. The quote I<br>
</blockquote></blockquote>
got<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
is $2800 (50% parts, 50% labor) for a package including the Open Sesame<br>
Model 233 (brochure<br>
<<a href="http://www.opensesamedoor.com/index_htm_files/open_sesame_brochure.pdf" rel="noreferrer" target="_blank">http://www.opensesamedoor.com<wbr>/index_htm_files/open_sesame_<wbr>brochure.pdf</a><br>
</blockquote>
,<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
spec<br>
sheet <<a href="http://www.opensesamedoor.com/index_htm_files/specs_model233.pdf" rel="noreferrer" target="_blank">http://www.opensesamedoor.com<wbr>/index_htm_files/specs_model23<wbr>3.pdf</a><br>
</blockquote>
),<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
made in San Leandro.<br>
<br>
Also, some of us met last week re: sketching out Omni's accessibility<br>
plan,<br>
and Yar suggested this might be a good time to also implement RFID<br>
</blockquote></blockquote>
system<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
for the front door, if that was possible? In part because, proximity to<br>
</blockquote></blockquote>
an<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
RFID fob is more accessible than a card swipe which (after thinking<br>
</blockquote></blockquote>
about<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
it) I realized requires a pincing motion that is likely not ADA...<br>
</blockquote></blockquote>
because<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
of the excessive door opening pressure and iffy slope on the front<br>
landing,<br>
we need an RFID & auto-opener.<br>
<br>
So -- I'm not sure if any more work has been done on the RFID systems I<br>
put<br>
in sudo a little while ago (stashed in under-stair storage area), might<br>
</blockquote></blockquote>
it<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
be possible to integrate these into the door opener? I note in the<br>
brochure<br>
they offer a keypad access option - perhaps an opportunity for 2-factor<br>
authentication like Marc had talked about? Anyhow what do you guys<br>
</blockquote></blockquote>
think?<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
I apologize for not helping y'all more with a better access control<br>
</blockquote></blockquote>
system<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
(helping spaces post-ghostship consumed my bandwidth), but as there is<br>
</blockquote></blockquote>
now<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
renewed pressure I want to help as I can. Would installing a trial<br>
RFID/throw on the Omni Office for example still be helpful towards<br>
</blockquote></blockquote>
getting<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
this nailed down? Lmk<br>
<br>
Fwiw - I see the opener as pressing at this point not just 'cause its<br>
</blockquote></blockquote>
long<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
overdue, but because every day our front door is labelled as accessible<br>
when it's technically not, is actually a not-insignificant liability<br>
</blockquote></blockquote>
issue<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
(accessibility lawsuit). Plus of course, we are still under scrutiny by<br>
the<br>
city, nimby neighbors trying to call us out for bogus reasons, etc etc.<br>
And<br>
per building code the front door must be made fully accessible before<br>
</blockquote></blockquote>
any<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
other accessibility work starts on the rest of the building - at some<br>
point<br>
an inspector's gonna notice since they all go through that door..anyhow.<br>
<br>
Let me know how myself & those of us working on accessibility might be<br>
able<br>
to help -<br>
<br>
Best,<br>
David<br>
<br>
</blockquote>
<br>
</blockquote>
<br>
</blockquote>
<br>
</blockquote>
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<br>
</blockquote>
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</blockquote></div><br></div>