Monday, October 15, 2007

Here comes the sun: Issues with solar sensors, and general wonderment for the project

After trying a couple protoype procedures centered around our main sensor, the solar cell, I have come up with a list of issues related to the real-life implementation of such a device:

1. We need to measure how much current the entire circuit is drawing. Why? We need to know how big the battery needs to be in order to power the entire circuit.
2. If the circuit pulls current from the battery quickly, the battery will die before it has the chance to recharge fully from the solar cell. Therefore, we also need to know how long it takes to fully charge the battery.
3. Is it inefficient for us to use a solar cell for both charging a battery and sensing the ambient light outside?
4. The solar cell should be flexible for maximum mounting possibilities. Also, we might need a few solar cells to produce the necessary voltage on the imput of the arduino circuit.

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