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Grove - Adjustable PIR Motion Sensor

Grove - Adjustable PIR Motion Sensor is an easy to use Passive Infrared motion sensor, which can detect infrared object motion up to 3 meters. Any infrared object moves in its detecting range, the sensor outputs HIGH on its SIG pin. And you can adjust the SIG HIGH time up to 130s via the potentiometer, moreover, you can adjust the detect range via the other potentiometer.

Version​

Product VersionChangesReleased Date
Grove - Adjustable PIR Motion SensorInitialSep 2018

Features​

  • Built-in filter, high immunity to RFI
  • Output time, sensitivity and detect range adjustable
  • Low voltage, low power consumption

Specification​

|Item|Value| |---|---| |Operating Voltage|3.3V / 5V| |Operating Temperature|-30℃ ~ 70℃| |Viewing Angel|Horizontal placement 80°
Vertical placement 55°| |Detction Spectral Response(λ)|5nm ~ 14nm| |Detction Distance|0 ~ 3m| |High Level On Time| <130s| |Interface|Digital| |Size|L: 40mm W: 20mm H: 15mm| |Weight|4.5g| |Package size|L: 140mm W: 90mm H: 15mm| |Gross Weight|10g|

Typical applications​

  • PIR motion detection
  • Intruder detection
  • Occupancy detection
  • Motion sensor lights
  • Security system
  • Automatic control

Hardware Overview​

Pin Out​

danger

The Fresnel lens equipped with the module is a plastic piece and is prohibited from approaching high temperatures or open flames.

Schemaitc​

Power

The typical voltage of L221D is 3.3V, so we use the XC6206P332MR chip to provide a stable 3.3V. The input of XC6206P33 ranges from 1.8V to 6.0V, so you can use this module with your Arduino both in 3.3V and 5V.

Platforms Supported​

ArduinoRaspberry Pi
caution
The platforms mentioned above as supported is/are an indication of the module's software or theoritical compatibility. We only provide software library or code examples for Arduino platform in most cases. It is not possible to provide software library / demo code for all possible MCU platforms. Hence, users have to write their own software library.

Getting Started​

Play With Arduino​

Hardware​

Materials required

Seeeduino V4.2Base ShieldAdjustable PIR Motion SensorGrove - Blue LED
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Get One NowGet One NowGet One NowGet One Now
note
**1** Please plug the USB cable gently, otherwise you may damage the port. Please use the USB cable with 4 wires inside, the 2 wires cable can't transfer data. If you are not sure about the wire you have, you can click [here](https://www.seeedstudio.com/Micro-USB-Cable-48cm-p-1475.html) to buy

**2** Each Grove module comes with a Grove cable when you buy. In case you lose the Grove cable, you can click [here](https://www.seeedstudio.com/Grove-Universal-4-Pin-Buckled-20cm-Cable-%285-PCs-pack%29-p-936.html) to buy.

  • Step 1. Connect the Grove - Adjustable PIR Motion Sensor to port D2 of Grove-Base Shield, connect the Grobe - Blue LED to the D4 port of the Grove-Base Shield.

  • Step 2. Plug Grove - Base Shield into Seeeduino.

  • Step 3. Connect Seeeduino to PC via a USB cable.

note
    If we don't have Grove Base Shield, We also can directly connect this module to Seeeduino as below.
SeeeduinoGrove CableGrove - Adjustable PIR Motion Sensor
GNDBlackGND
5V or 3.3VRedVCC
NO connectionWhiteNC
D2YellowSIG
SeeeduinoGrove CableGrove - Blue LED
GNDBlackGND
5V or 3.3VRedVCC
NO connectionWhiteNC
D4YellowSIG

Software​

note
    If this is the first time you work with Arduino, we strongly recommend you to see [Getting Started with Arduino](https://wiki.seeedstudio.com/Getting_Started_with_Arduino/) before the start.
  • Step 1. Just click the icon in upper right corner of the code block to copy the following code into a new sketch in the Arduino IDE.
/*macro definitions of PIR motion sensor pin and LED pin*/
#define PIR_MOTION_SENSOR 2//Use pin 2 to receive the signal from the module 
#define LED 4//the Grove - LED is connected to D4 of Arduino

void setup()
{
 pinsInit();
}

void loop() 
{
 if(isPeopleDetected())//if it detects the moving people?
  turnOnLED();
 else
  turnOffLED();
}
void pinsInit()
{
 pinMode(PIR_MOTION_SENSOR, INPUT);
 pinMode(LED,OUTPUT);
}
void turnOnLED()
{
 digitalWrite(LED,HIGH);
}
void turnOffLED()
{
 digitalWrite(LED,LOW);
}
/***************************************************************/
/*Function: Detect whether anyone moves in it's detecting range*/
/*Return:-boolean, ture is someone detected.*/
boolean isPeopleDetected()
{
 int sensorValue = digitalRead(PIR_MOTION_SENSOR);
 if(sensorValue == HIGH)//if the sensor value is HIGH?
 {
  return true;//yes,return ture
 }
 else
 {
  return false;//no,return false
 }
}
  • Step 2. Upload the demo. If you do not know how to upload the code, please check How to upload code.
tip
 If every thing goes well, When someone approaches this sensor or when you approach this sensor with your hand, the LED will light up.

Schematic Online Viewer​

Resources​

Tech Support & Product Discussion​

Thank you for choosing our products! We are here to provide you with different support to ensure that your experience with our products is as smooth as possible. We offer several communication channels to cater to different preferences and needs.

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