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by ramidarigaz
6059 days ago
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It's actually fairly simple. I used the analog pins, and the sensors were just a circuit with a resistor that would be bypassed by the water. I used the 5V pin on the Duemilanove board to put power through the circuit, and then hard coded the numbers from the analog pins into the main loop. I would have done a simple setup that allowed the water to close the circuit, but the sensors are very sensitive, and would react to my hand being near them when there was no circuit. I don't know enough about electronics to explain why... As far as communication goes, I have a simple LED setup, with rows of 5 LEDs indicating the water level. |
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