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SByke

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    SByke got a reaction from yyrkoon in Project Idea: Beaglebone Black home automation and security.   
    Indeed.  Pretty slick.  The 1-wire interface is intended for long runs and you can chain quite a few sensors on the same run.  They even scavenge power from the data line.  Each has a unique 64 bit ID and there's a linux driver for the 1-wire interface.  So once you have the driver running and pointed at the right GPIO pin you can just read cat /sys/whatever to get the temperatures for each sensor.
     
    So they are pricier, but all in all if they are good fit for this project.
  2. Like
    SByke got a reaction from Automate in Project Idea: Beaglebone Black home automation and security.   
    Plan:
    1. Enable turning on attic fan when inside, outside, and attic temperatures indicate it's beneficial
    2. Open Garage door when a crypto signed request is made
    3. Send XMPP/Email and sound buzzer when garage door is open too long.
    4. Leave expansion for future sensors, monitoring, and control.
     
    Pasts list:
    * Beaglebone Black
    * http://www.amazon.com/gp/product/B0057OC5O8 Relay to control fan, and garage door open/close, and buzzer.
    * QTY 3 https://www.sparkfun.com/products/11050 1-wire temp sensors to monitor attic, inside, and outside temps.  To allow monitoring when best to turn on fan.
    * Wifi, any difference in reception?  Anything better out there?
     
      http://www.adafruit.com/products/1012 * QTY 2: One for door up, one for door down, to help make sure it never gets confused:  http://www.amazon.com/gp/product/B0009SUF08 * buzzer (hopefully audible from inside the house).   http://www.radioshack.com/product/index.jsp?productId=2062397 * 5V/2000mA UL listed power adapter http://www.adafruit.com/products/276   Questions: * Anything obvious missing? * Should everything be compatible/relatively easy to integrate? * Any suggestions for where to get a few hundred feet or wire for handling things like the temp   sensors, magnetic switches, and to replace the existing garage door opening switch? * Any better parts than the above?  Especially the buzzer. * Any nice project cases with a few audio/rj11/rj45 built in to enable easy pluggable   connections to 4 to 8 low voltage data lines?   Comments?  Suggestions?  Links to similar projects?   Oh I did find this one based on a Rasberry Pi:  http://ryanfx.blogspot.com/2013/06/raspberry-pi-powered-android-controlled.html          
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