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	<title>Sudo Room - User contributions [en]</title>
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	<updated>2026-05-05T00:28:30Z</updated>
	<subtitle>User contributions</subtitle>
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	<entry>
		<id>https://sudoroom.org/mediawiki/index.php?title=Door_Access&amp;diff=950</id>
		<title>Door Access</title>
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		<updated>2012-12-03T06:00:31Z</updated>

		<summary type="html">&lt;p&gt;Xrv: /* Summery */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;==Summary==&lt;br /&gt;
Door access related projects:&lt;br /&gt;
&lt;br /&gt;
* [[#Door Open Indicator|Door Open Indicator]]&lt;br /&gt;
* [[#Sudo Door Intercom|Sudo Door Intercom]]&lt;br /&gt;
* [[#Outside Facing Door|Outside Facing Door Access]]&lt;br /&gt;
* [[#Inside Door|Inside Door Access]]&lt;br /&gt;
&lt;br /&gt;
==Sudo Door Intercom==&lt;br /&gt;
There is an old intercom system that is wired from the [[#Outside Facing Door|outside facing door]] up to the [[phone closet]]. One the first things we did when we got in to the space was to reconnect this intercom and attach it to a phone we had lying around. Here's a picture:&lt;br /&gt;
&lt;br /&gt;
[[File:sudoroom-intercom.jpg|thumb|none]]&lt;br /&gt;
&lt;br /&gt;
Right now if the space is occupied you can get in without a key by:&lt;br /&gt;
&lt;br /&gt;
# Pressing the intercom button outside the door&lt;br /&gt;
# Waiting for a sudoer to answer&lt;br /&gt;
# Saying &amp;quot;I'm here for sudoroom&amp;quot;, or &amp;quot;My voice is my passport&amp;quot;&lt;br /&gt;
# Waiting for an awesome sudoer to come and let you in&lt;br /&gt;
# Saying thank you!&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==Door Open Indicator==&lt;br /&gt;
This project will detect if the [[#Inside Door|Inside Door]] is open and share that information.&lt;br /&gt;
&lt;br /&gt;
Our current plan involves using a TI MSP4302553 via the TI Launch Pad to generate a tone. When the door is closed, the tone will stop. Anything that can pickup the audio will be able to detect if the door is open. We have a python script that does just that. Here is a picture of the tone generator in progress:&lt;br /&gt;
[[File:Ti-launchpad-tone-generator.jpg|thumb|none]]&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==Outside Facing Door==&lt;br /&gt;
&lt;br /&gt;
==Inside Door==&lt;br /&gt;
The interior door, the westernmost one, will be controlled by a arduino interface that activates a motor that turns a key in the dead bolt. The arduino is activated by a python script doorman.py that runs on the computer sudoroom_blue (which also drives the 3d printer). doorman.py is a tornado based webserver . The server sudroom_blue has the static ip address 192.168.0.53, and the router forwards traffic to it on port 7836.&lt;/div&gt;</summary>
		<author><name>Xrv</name></author>
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