CalmNest: IoT and ML Based Smart Cradle Using Arduino Nano 33 BLE Sense

The CalmNest smart cradle addresses the growing need for automated infant care, particularly for working parents who require reliable, responsive monitoring to ensure their baby's comfort and safety. Utilizing an Arduino Nano 33 BLE Sense processor with built-in sensors-including cry detection, environmental monitoring, and proximity sensing-CalmNest automatically responds to the baby's needs. The cradle gently swings when the baby cries, maintains optimal temperature by activating an exhaust fan when needed, and alerts parents to moisture or caregiver presence through Bluetooth-enabled notifications. Developed using platforms like Arduino IDE and Edge Impulse, CalmNest achieves a 92.6% cry detection accuracy, with additional enhancements for stability in temperature and humidity monitoring through a DHT11 sensor and OLED display. Performance analysis confirms that CalmNest successfully balances automated comfort and safety, creating a smart parenting solution that reduces manual intervention and supports a secure, nurturing environment for the baby. (Abstract)