Learn how to measure DC voltage and current using an Arduino in this comprehensive video tutorial. Explore fundamental techniques for voltage measurement using the Arduino's analog-to-digital converter, implement voltage dividers to extend measurement range, and improve accuracy with precision external voltage references. Dive into current measurement methods using both Hall Effect and resistive sensors, including a unique sensor capable of simultaneous current and voltage measurements via I2C connection. Follow along with practical experiments and code samples to gain hands-on experience in DC electrical measurements for various applications such as project power consumption analysis, solar cell testing, and battery monitoring.