Glass Half Full

Physical Computing

“FULL” light goes on once the glass is full!

This circuit is designed to light different lights which show the state of the glass of water. It completes when the glass of water fills up, connecting the ends of two wires (one at the bottom and one at the height which is considered “full”), and the micro-controller is programmed to take this input and light up LEDs accordingly. For conductivity purposes, salt water is used.

Salt water conducts electricity

The code:

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