Sunday, July 31, 2011
Monday, July 25, 2011
pachube.com
Domotics project: Two Arduinos control the home and measure stuff, they talk to each other using I2C. One of them communicates via USB with an apache webserver which interfaces the house with my iPhone or any web-enabled device at the time it sends data to Pachube for data logging. It all runs on backup batteries in case there is a power outage. A third Atmega uC watchdogs the two main units if they ever freeze.
Features:
Alarm control and monitoring,
Temp sensing,
Ambient light sensing,
Powers lights, audio equipment, curtains, A/C, heating.
It combines the sensors wisely, i.e: If it's dark but senses motion, then turns lights on for a while, or if it's dark inside but light outside then open the curtains and so forth...
IR local remote control,
Full Web control and monitoring,
Webcam monitoring (through the web interface)
I2C realtime clock,
Serial enabled LCD display for local user-interface,
Uses arduino internal EEPROM to remember last status of everything in case the watchdog resets them.
Pachube, Automation and more!
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https://pachube.com/feeds/2557
This feed on home energy use can give some insight into when people occupy the house. It would be interesting to see how this data compares with data collected 10 years ago.