Compare adjustable, Mini and Digital Grove PIR sensors, wire them for ESP32 3.3 V logic and read motion without an extra Arduino library.
🌱Easy to use: Grove compatible interface and supports both Arduino and Raspberry Pi platforms
🌱Flexible detecting: Detecting angles up to 120 degrees, and adjustable detecting distance and holding time
🌱Small-design: 20mm x 40mm
🌱Wide application: it is commonly found in appliances and gadgets due to its low-cost, low-power,easy-to-use, and long-life cycle.
Description
PIR Sensor is short for passive infrared sensor, which applies to projects that need to detect movement of people or other warm objects in a certain range. It is also known as PIR (motion) sensor or IR sensor.
Technically, PIR is made of a pyroelectric sensor, which is able to detect different levels of infrared radiation.
If the PIR sensor notices the infrared energy, the motion detector is triggered and the sensor outputs HIGH on its SIG pin. Two potentiometers adjust detection sensitivity/range and output holding time. Seeed documents a 1–25 s holding-time range and up to 6 m detection under suitable conditions; actual range depends on mounting, motion and environment.
It is commonly found in appliances and gadgets used in homes or businesses because it is small, low-cost, low-power, easy to use, and won't wear out.
Part List
Grove - PIR Motion Sensor
