Voltage Sensor (0–25V) Tutorial | Measure High Voltage Using Arduino

Learn how to use the Voltage Divider Module (0–25V DC) to measure high voltage safely using Arduino or ESP32. In this video, we explain the pin configuration, internal working, circuit diagram, and complete connection process step by step. Topics Covered: Voltage Divider Module introduction VIN, GND, Signal pin explanation Internal working (R1 = 30kΩ, R2 = 7.5kΩ) Arduino connection diagram Safety precautions (DC only) Practical voltage measurement concept This tutorial is useful for: Electrical engineering students, Arduino beginners, IoT projects, battery monitoring systems, and embedded system learners. Subscribe for more Arduino, ESP32, Electrical, and Electronics tutorials.