: No external hardware needed; allows for custom "detection zones" and sensitivity levels.

: Includes a built-in MicroSD card slot for local storage of triggered captures.

: Requires connecting a PIR sensor (e.g., HC-SR501) to a GPIO pin.

: The camera continuously captures frames at low resolution; if the "motion ratio" exceeds a set threshold, it triggers an action (like saving a high-res image to the SD card). Core Technical Specifications

: Uses libraries like the Eloquent Arduino library to compare consecutive frames for pixel changes.

: Low power consumption (ideal for battery operation) and high reliability with fewer false positives.

The is a powerful, low-cost microcontroller that combines Wi-Fi/Bluetooth capabilities with an integrated camera module. For motion detection, you can choose between a hardware-based approach using an external PIR sensor or a software-based approach using image processing. Motion Detection Methods PIR Sensor (Hardware-Based):