PIR & Motion Sensor
PIR & Motion Sensor
Introduction Arduino projects often use PIR sensors for motion detection, but with dozens of modules available, choosing the right one can be confusing. This guide covers the most popular PIR sensor modules for Arduino, their characteristics, and when to use…
Introduction Noise is the enemy of reliable PIR detection. This guide identifies noise sources and provides practical mitigation strategies. Types of Noise in PIR Systems 1. Thermal Noise (Johnson-Nyquist) Fundamental noise from thermal agitation of charge carriers. Present in all…
Introduction Outdoor PIR sensors face harsh conditions: rain, snow, temperature extremes, direct sunlight, and wildlife. Choosing the right sensor for outdoor use requires considering weather resistance, detection range, and false alarm immunity. This guide covers the best options for 2026.…