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SByke

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  1. 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. 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
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