Hi

Does anyone have a simple wiring diagram for this PIR Motion Sensor Module I would like to use a small led light with a small battery aa or 9v..
https://www.tdegypt.com/product/mini-pir-motion-sensor-hc-sr505/
thank you

 

My advice is to look at the marking on the IC fitted to the board – once you know the device type, look up the pin connections for the 0V and +V (taking note of the operating voltage). Then trace (or buzz-out) the PCB tracks of those IC pins (0V & +V) back to the connector pins of the PCB; the third pin will be the signal out pin.

 

Datasheet...

https://www.rapidonline.com/trusens-hc-sr505-mini-pir-motion-sensor-78-4110

 

They provide specifications:
Mini PIR Motion Sensor Specifications

• Operating Voltage Range: DC4.5-20V
• Static current: <60uA
• Output level: High 3.3V / Low 0V
• Trigger: repeatable trigger (default)
• Delay time: 8S + -30%
• PCB Dimensions: 10 * 23mm
• Induction angle: <100 degree cone angle
• Induction distance: 3 meters
• Working temperature: -20 – +80 degrees
• Sensor Lens Dimensions: Diameter: 10mm (default)

They also mention the center pin is the signal out and I see a (-) marking on one pin so I see it as this:


They do not mention a source or sink current but do cover how to connect it to an Arduino and provide a code sample. My guess is you get a logic high (3.3 volts) when it detects something. I would use that to turn on a switching transistor like a 2N2222 and use the transistor to drive you load be it an LED or whatever.

I see as I typed Dodgydave was kind enough to provide a data sheet which shows the use of an NPN transistor to drive a small load.

Ron

 

A possible wiring

 

hi create,
That PIR output goes to +3V when activated, check the operation of the buzzer.
E

 

http://www.egmicro.com/download/EG4002_datasheet.pdf