Most PIR sensors I've worked with only have a hi/lo output (low when triggered). If you have one that gives an analog output, you'll have to identify it for us to help you.
You could, however, change the display for how long it's staying activated.
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you can use either a PIC or an AVR, depends on your preference. Each have a variety of micros that you can chose from. Before we can help you pick a micro, you'll have to give us more about your sensor and how you intend to use it.
... and...
you can use either a PIC or an AVR, depends on your preference. Each have a variety of micros that you can chose from. Before we can help you pick a micro, you'll have to give us more about your sensor and how you intend to use it.
This one gives an analog output signal, you can convert it to digital with the use of comparator.....
if all you need to do is turn on alarm, you can configure it without microcontroller. but if you must use, you are free to use any
microcontroller pic, avr e.t.c
This one gives an analog output signal, you can convert it to digital with the use of comparator.....
if all you need to do is turn on alarm, you can configure it without microcontroller. but if you must use, you are free to use any
microcontroller pic, avr e.t.c