Grove - PIR Motion Sensor

The Grove PIR Motion Sensor is a passive infrared sensor designed to detect motion based on infrared radiation changes in its surroundings. It is commonly used in automation and security systems, and in the classroom, it offers a valuable opportunity for students to build interactive and responsive projects. With a wide 120 ° detection angle and adjustable sensing distance, this compact module is easy to connect to Arduino via the Grove system.

¢ Educational benefits

• Teaches students about infrared radiation and motion detection
• Introduces event-driven programming and conditional logic
• Enhances understanding of input devices in physical computing
• Provides practical experience in automating systems
• Encourages exploration of real-world applications in security and safety

¢ Classroom ideas

• Create an automatic light or alarm that activates when someone enters a room
• Build a digital pet that reacts to movement
• Program an energy-saving lighting system using motion detection
• Use in a classroom experiment measuring movement over time
• Combine with sound output or LED for creative interactive projects

¢ Specifications

• **Voltage Range:** 3V-5V
• **Size:** 20mm x 40mm
• **Detection Angle:** 120 degrees
• **Detection Range:** Up to 6 metres (3m default)
• **Adjustable:** Distance and response speed (0.3s-25s)
• **Interface:** Grove-compatible