This is difficult to help you if we do not know the µC you will use (Atmel, PIC, ...).
And I am sure you can find examples of reading analog value from ADC.
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Atiny LED flasher with constant on
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This is difficult to help you if we do not know the µC you will use (Atmel, PIC, ...).
And I am sure you can find examples of reading analog value from ADC.