VOLTAGE SENSOR DC

DC Voltage Sensor Module using a resistive voltage divider (5:1 ratio). Allows a microcontroller’s analog input to measure voltages up to 25V (5V system) or 16.5V (3.3V system). Based on 10-bit ADC: 0.00489V analog resolution, ~0.02445V minimum detectable input. Screw terminals for easy wire connection. 3-pin output (S/GND/VCC) for direct Arduino expansion board connection.

Connections:

• Output “+” — 5V or 3.3V MCU supply
• Output “−” — GND
• Output “S” — Arduino analog input pin
• DC Input Red terminal — Positive (VCC)
• DC Input Black terminal — Negative (GND)

Specifications:

• Divider Ratio: 5:1
• Max Input Voltage: 25V (5V system) / 16.5V (3.3V system)
• Detection Range: 0.02445–25V
• Analog Resolution: 0.00489V
• Compatible: IIC LCD1602 for voltage display

Applications:

• Battery voltage monitoring with Arduino
• DC power supply measurement beyond native ADC range
• Solar panel and DC bus voltage sensing