PIR Motion Sensor

Description

The PIR motion sensor detects movement by measuring changes in infrared radiation. It's commonly used for motion-activated lights, alarms, and home automation systems. The HC-SR501 version includes adjustable sensitivity and delay time.

Specs

Operating Voltage	4.5V – 20V DC
Detection Range	3m – 7m (adjustable)
Delay Time	Adjustable (0.3s to 300s)
Trigger Mode	Repeatable / Non-repeatable
Output Signal	High (3.3V) when motion detected
Power Consumption	~65µA

Compatibility

• Arduino Uno, Nano, Mega
• ESP8266 / ESP32
• Raspberry Pi (GPIO input)
• Compatible with 3.3V or 5V logic

Resources

• 📘 Arduino PIR Tutorial
  Complete Guide
• 🔧 Datasheet for HC-SR501
  View Datasheet
• 💡 PIR Sensor Projects
  Arduino Project Hub

Description
This passive infrared (PIR) motion sensor can detect movement up to 7 meters away, making it ideal for security, automation, and motion-triggered applications. It's fully compatible with Arduino and Raspberry Pi projects and offers straightforward integration. While easy to use, the module requires basic soldering of header pins prior to deployment. Perfect for DIY electronics and IoT motion detection systems.

Specs
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Compatibility
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Resources
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