Arduino Battery Monitor - No External Components Required

Learn how to monitor battery voltage in Arduino ATMega328P projects without external components. Explore using the bandgap voltage on the AREF pin to detect when batteries are nearly depleted in battery-powered, deep sleep Arduino projects. Discover the process of calibrating the AREF voltage for accurate readings, and implement a simple function to incorporate battery monitoring into your sketches. Gain insights into capacitor selection and usage in Arduino projects. Follow along with code explanations and practical demonstrations to enhance your Arduino battery management skills.