Grove - mini PIR motion sensor

The Grove – mini PIR motion sensor is a compact, low power consumption, and cost-effective PIR sensor which is suitable for applications with relatively less detection distance requirements Features Adjustable sensitivity: a reserved pin out on board to solder a slide rheostat to adjust the sensitivity Easy to use: Grove compatible interface and supports both Arduino and Raspberry Pi platforms Mini size: 20mm x20mm x12mm The detection distance in the datasheet is up to 3m to 5m, however, 2m is the best detection distance that we recommend and 25℃ is the most suitable temperature. The sensitivity of the sensor is adjustable, there is a reserved pin out on the back of the board so that you can solder a slide rheostat to adjust the sensitivity. If you think the sensitivity is not enough, here is a trick, drag the plastic cap a little up will help enhance the sensitivity. Note: Please note that the orientation can influence the sensitivity, for more accurate detection, please place the sensor as in the picture below. What is a PIR Sensor? A passive infrared sensor is an electronic sensor that measures infrared light radiating from objects in its field of view. They are most often used in PIR-based motion detectors. PIR sensors are commonly used in security alarms and automatic lighting applications. What does a PIR sensor detect? PIR sensors are also known as PID or Passive Infrared Detectors. Thus, the PIR sensor can detect infrared radiation that is emitted by particles. How does PIR Sensor work? The PIR Sensor has 2 slots, and the slots are made of sensitive material. When the sensor is inactive, then the two slots will sense the same amount of IR. The ambient amount radiates from the outdoors, walls or room, etc.When a human body or any animal passes by, it intercepts the first slot of the PIR sensor. This causes a positive differential change between the two bisects. But when the body leaves the sensing area, the sensor generates a negative differential change between the two bisects. How to adjust the sensor sensitivity of PIR Sensor? To adjust the sensor sensitivity, you need to solder a 5k adjustable resistor at VR1 and remove R6 Click to explore more about PIR sensors. Comparison of PIR Motion Sensor Series Product Features Grove - PIR Motion Sensor Max Distance:3-6m(3m by default)Angle:< 120° Measuring distance and holding time adjustableresponse speed:0.3s - 25s Grove-Adjustable PIR Motion Sensor Max Distance:3-6mAngle: X=110° Y=90° Measuring distance and holding time adjustable Grove - mini PIR motion sensor Max Distance:2-5m(2m by default)Angle: X=110° Y=90° Sensitivity adjustableMini-size PIR Motion Sensor - Large Lens version Max Distance:9mAngle:< 120° The large lens can support long-range and wide-angle2.54mm standard connector PIR Motion sensor module Max Distance:3-7mAngle:< 120° Sensitivity & Delay time adjustable Mini PIR Motion Sensor Module Max Distance:7mAngle:< 100° Mini-size Grove Digital PIR Motion Sensor Max Distance:3-12 mAngle:< 100° Mini-sizeSimple and intuitive Grove - mini PIR motion sensor will work with the same library as Grove - PIR Motion Sensor. So, please refer to the wiki page of Grove - PIR Motion Sensor and download the library from there to get started with this sensor. Applications Motion Sensor Motion Detector Security Alarm System Human Detection System