AUDIO_MEMO_ALERT

Published:2009/6/23 2:16:00 Author:May | From:SeekIC

This device prevents paper notes and memos from being overlooked. A paper note placed be-tween two fingers made of a conducting material (metal or conductive plastic) breaks the circuit, al-lowing pair 1 of U1-a to go high. This causes U1-c & U1-d to act as an oscillator, pulsing piezo buzzer BZ1.



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