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control anything from a cell phone

Tiny Planet:  a planet-wide, wireless I/O port

a joint project with AVR guru Claudio Lanconelli (http://www.lancos.com)

Tiny Planet is small device connected to a GSM cell phone. When the mobile receives a predefined SMS (text message), like "Activate burglar alarm" or "Start backup pump", the circuit automatically recognizes it as a command, and switches the output port accordingly. Besides switching the port on or off, the user can pulse it for a short period (e.g. Reboot remote server).

The device can be used as well to notify the status of the input port, sending automatically a message every time the input changes (e.g. "Warning, intrusion detected", "Insufficient level in Tank #5).
To know input status at any time, the device can send back a SMS based on the status of the input, as a response to a request message.

Tiny Planet gets the most out of a 8-pin microcontroller an is remarkably simple. Text messages are customizable (despite of using less than 512 instructions of assembler code) and is simple to use: ways simpler than most GSM modems...
Even if you're not interested in building it, the article is worthing to read in order to learn more about how to connect a GSM phone to a microcontroller and how to send, receive and analyze SMS messages.

Information available on this site:

See also:

as seen on
CIRCUIT CELLAR MAGAZINE
issue # 142

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