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Old 07-06-2012, 04:33 AM
moorejohn90 moorejohn90 is offline
Join Date: Dec 2011
Posts: 50
Exclamation IR LED for catching intruder.

Hi, I don't have experience with IR led. But I want to use it for catching intruder. I know the way of using laser pointer with light dependent resistor. Can I use IR led instance of laser pointer. And I also want to know it can give the strength of light as laser (normal LED can reach as laser light). Is there any way of using IR led for catching intruder (not including PIR, I know about it). I have seen infrared ray that is like laser but can't be seen with human eye in movies, how it is work.
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Old 07-06-2012, 02:01 PM
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t06afre t06afre is offline
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Sure it can be done. You will need one IR transceiver and one IR receiver. The principal will be much the same used in any IR remote control. As you may know this is the "Embedded Systems and Microcontrollers" will you be using a microcontroller in your project? However you can make this without any micro also
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Old 07-06-2012, 04:52 PM
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BMorse BMorse is offline
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you can also just get an IR Laser........
There is no spoon -Neo-
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Old 07-07-2012, 09:39 PM
BillO BillO is offline
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Originally Posted by BMorse View Post
you can also just get an IR Laser........
Yeah, a 100KW CO2 laser will keep the intruders to a minimum.

Facts just don't care if you ignore them.
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Old 07-08-2012, 03:08 PM
moorejohn90 moorejohn90 is offline
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Hi, Thanks for all of your reply.
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