Please help, atmega32 and obstacle sensor

[electronicslab]

obstacle sensors with range

Hi,

Is it possible to detect obstacle using atmega32 and a sensor?
What type of sensor do i need for this?
It's urgent.
Please mention.

Idea:
If someone is in a range of that sensor the led will be lightened.
How can I make this circuit?
Can anyone provide such circuit design using atmega32?

 

[betwixt]

pir 13 atmega

You need to be more specific if you want an informative reply.

Is the obstacle a molecule, an elephant, a ghost, smoke or what?

What you are trying to detect determines the best technology to do the job.

Brian.

 

[electronicslab]

Suppose we have a sensor.
It will detect a human being if a man appears in a certain range of that sensor.

Is it possible to do with atmega32?

Thank you.

 

[senthilkumar]

use PIR sensor

 

[electronicslab]

use PIR sensor

Thanks.
Can you please give the circuit diagram to connect PIR sensor with atmega32?
In proteus can't find PIR sensor.