SmartKite consists of two modules: a receiver attached to the kite's spool and a transmitter attached to the kite itself. Upon startup, SmartKite connects to Yahoo Weather via Ethernet, gathering and displaying wind speed and direction on the receiver, allowing the user to determine if the conditions are right for flying. Then, the receiver starts communicating with the transmitter using bluetooth. The transmitter utilizes an Adafruit BMP180 sensor, which measures atmospheric pressure in hectoPascals and temperature in degrees Celsius. After calibration, during which SmartKite gets a baseline pressure at ground level, the sensor gathers data continuously. The pressure is used to calculate the kite's altitude using the barometric formula (generally, a change in pressure of 1.2 kiloPascals roughly corresponds with a 100 meter change in altitude). Altitude and temperature readings sent from the transmitter are displayed on the receiver.
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