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Description
DFRobot Gravity Digital Infrared Motion Sensor
Detects motion via infrared heat
Adjusts delay using onboard potentiometer
Supports Arduino with Gravity Interface
Operates at 3.3V for platform versatility
Covers 110° angle up to 7 meters
The DFRobot Gravity Digital Infrared Motion Sensor is an efficient and user-friendly device designed for detecting motion through infrared heat within its specified angle of detection. Upon powering the sensor, it requires a brief period to capture a baseline snapshot of the environment. Any subsequent movement within its range causes the sensor's alarm pin to activate, indicating a change in the detected infrared energy. This functionality makes it an ideal component for home security systems and various automation projects, such as automated lighting systems that activate when motion is detected and deactivate when the area is clear. The sensor's delay in sensing can be adjusted using the potentiometer located on the back, allowing for customization based on specific project needs. The integration of a Gravity Interface simplifies the connection process, making it compatible with Arduino setups. Additionally, its ability to operate at 3.3V ensures compatibility with other platforms such as Raspberry Pi, Intel Edison, Joule, and Curie. This versatility makes it a valuable tool for developers and hobbyists seeking to incorporate motion detection into their projects.
The detection works fine when you know exactly how this sensor works. Sort of wish there was better documentation. It takes a few seconds to calibrate so make sure at boot up you have it in a good position. After that, when it detects motion, it will output a digital 1. However, if you want it to go back to a digital 0, you must wait with no movement for ~20 seconds or so. Of course, when you don't know how it works, it just seems broken as it is always detecting movement even when you hold it still for a few seconds. I can't comment on its distance as my application is fairly small in distance.
