Hello, this is the first time I have used this forum. I was hoping I might be able to get some advice regarding a circuit design. The design specification states there voltage must be clamped to a range of 0v - 3.3v and must use a sensor.
Right, my idea was to use a proximity sensor (Sharp infared upto 30 cm detection) and have 3 conditions. From 30cm to 20cm display a green LED, from 19cm to 10cm display an orange LED, and from 9cm to 0cm display a red LED and activate a buzzer. If I was able to use a micro controller for this it would be very easy, however I assume I will have to use 3 comparators, which I am not too sure how to go about using, as I've not really used them.
Any help on getting to grips with this analogue project would be deeply appreciated.
Thanks.
Right, my idea was to use a proximity sensor (Sharp infared upto 30 cm detection) and have 3 conditions. From 30cm to 20cm display a green LED, from 19cm to 10cm display an orange LED, and from 9cm to 0cm display a red LED and activate a buzzer. If I was able to use a micro controller for this it would be very easy, however I assume I will have to use 3 comparators, which I am not too sure how to go about using, as I've not really used them.
Any help on getting to grips with this analogue project would be deeply appreciated.
Thanks.