# need circuit for PIR sensor

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#### manz

##### New Member
does anybody have or could tell me where to get the circuit for PIR sensor,you know,the thing to detect motion.Just as simple as if there is a motion and the light will be turn on.

thanks..

#### epilot

##### Member
manz said:
does anybody have or could tell me where to get the circuit for PIR sensor,you know,the thing to detect motion.Just as simple as if there is a motion and the light will be turn on.

thanks..
http://www.web-ee.com/Schematics/PIR/irsystem.pdf

but a ready PIR package is very better than making one i think
bye the way you need for a timer too...

good luck

#### manz

##### New Member
hm thanks for the url. Timer?? if that is for the PIR circuit, its ok, i think i just can add any timer circuit (power on delay or power off delay circuit) to the output of the PIR circuit relay.Thanks for reminding :wink: . i know there is PIR package on the market but i just couldnt find one,yet.Ill have a look to the circuit 1st. thanks epilot.

#### epilot

##### Member
manz said:
hm thanks for the url. Timer?? if that is for the PIR circuit, its ok, i think i just can add any timer circuit (power on delay or power off delay circuit) to the output of the PIR circuit relay.Thanks for reminding :wink: . i know there is PIR package on the market but i just couldnt find one,yet.Ill have a look to the circuit 1st. thanks epilot.
a PIR package has not any really timer in it NORMALLY and when PIR detects someone its relay will be active for only a few secends and you said you want to turn on and off a light by it(only for places that a person does a motion not for setting rooms..)so you need for a timer...

you can find pir packages in the BURGLAR stores

#### manz

##### New Member
will be active for only a few secends and you said you want to turn on and off a light by it(only for places that a person does a motion not for setting rooms..)so you need for a timer...

yup,this is what i have in mind.i have a timing circuit that works like this,the timer relay will be de-energize a few sec/min (as I pre-set it) after the last input voltage it recieve (that will be from the motion sensors circuit).so this timer circuit will turn on/off the light.i think its ok for the timing device,just need to work with the motion sensors circuit :wink: but anyway ill try to find the PIR pakage 1st as it is so much more easier for me though :lol:

#### ljcox

##### Well-Known Member
Have you done a search for "timer" in this forum? There have been many discussed in the past.

#### mneary

##### New Member
OP has been gone for three and a half years, but maybe he'll come back.

#### timsvb

##### New Member
OP has been gone for three and a half years, but maybe he'll come back.
Yeah. Bugga.Don't know where my head was,Wrong page.
Cheers.

#### ericgibbs

##### Well-Known Member
does anybody have or could tell me where to get the circuit for PIR sensor,you know,the thing to detect motion.Just as simple as if there is a motion and the light will be turn on.

thanks..
hi,
Got this from the web some time ago, cant vouch for it working, needs checking out.

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