Author Topic: Modify PIR sensor motion detector circuit  (Read 1659 times)

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Offline fixit7Topic starter

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Offline soldar

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Re: Modify PIR sensor motion detector circuit
« Reply #1 on: May 15, 2019, 09:41:47 pm »
Yes but wouldn't it be simpler to just buy one with a buzzer? Like the ones they have in stores when a customer walks in or out. They are very cheap.
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Offline fixit7Topic starter

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Re: Modify PIR sensor motion detector circuit
« Reply #2 on: May 15, 2019, 11:49:57 pm »
Yes but wouldn't it be simpler to just buy one with a buzzer? Like the ones they have in stores when a customer walks in or out. They are very cheap.

I could but I would not learn as much.

And I want to be able to modify the circuit.

 

Offline soldar

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Re: Modify PIR sensor motion detector circuit
« Reply #3 on: May 16, 2019, 12:01:59 am »
You can try this.
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Offline floobydust

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Re: Modify PIR sensor motion detector circuit
« Reply #4 on: May 16, 2019, 12:20:36 am »
The HC-SR501 IR motion sensor uses the BISS0001 motion sensor IC. It has a weak output. You need to add a NPN transistor to drive piezo beeper or relay.
For more information, look for BISS0001 circuits.
 

Offline fixit7Topic starter

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Re: Modify PIR sensor motion detector circuit
« Reply #5 on: May 16, 2019, 12:54:10 am »
« Last Edit: May 16, 2019, 12:55:43 am by fixit7 »
 

Offline techman-001

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Re: Modify PIR sensor motion detector circuit
« Reply #6 on: May 16, 2019, 01:12:28 am »
Can this be modified to use a piezo buzzer?

https://circuitdigest.com/electronic-circuits/pir-sensor-based-motion-detector-sensor-circuit

Thanks.

Sure easy peasy , learn about transistors and or fets and use one in place of the led, to drive a buzzer.
 

Offline fixit7Topic starter

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Re: Modify PIR sensor motion detector circuit
« Reply #7 on: May 16, 2019, 02:05:53 pm »
Can this be modified to use a piezo buzzer?

https://circuitdigest.com/electronic-circuits/pir-sensor-based-motion-detector-sensor-circuit

Thanks.

Sure easy peasy , learn about transistors and or fets and use one in place of the led, to drive a buzzer.

Thanks.

I am reading Practical Electronics for Inventors.

I could use some more details on your recommendation.

I am a relative beginner.
 


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