Hey all.
I need a handy cheap way of making a foul line system in our lanes where I work. Our machine are old and do work quit well, they are candle pin but over the year the mechanics had removed the foul detectors..
I was thinking of a laser diode and a photo-transistor to ring a buzzer powered by small batteries; but not sure how to make up the circuit for this?
Have any ideas or diagrams??
I need a handy cheap way of making a foul line system in our lanes where I work. Our machine are old and do work quit well, they are candle pin but over the year the mechanics had removed the foul detectors..
I was thinking of a laser diode and a photo-transistor to ring a buzzer powered by small batteries; but not sure how to make up the circuit for this?
Have any ideas or diagrams??