Voltage Sensor Module for Arduino & Raspberry Pi | 0-25V DC Voltage Detection

The Voltage Sensor Module for Arduino & Raspberry Pi | 0-25V DC Voltage Detection uses a precision voltage divider to safely measure DC voltages up to 25V using a microcontroller’s analog input. Ideal for battery monitoring and power management applications.

Key Features

• Measures 0-25V DC safely with microcontroller
• Precision voltage divider with stable resistor values
• Safe for 5V microcontrollers – output scaled to ADC range
• 5% tolerance resistors for reasonable accuracy
• Compact module with standard header pins
• Easy to use with single analog pin connection
• Two-pin input for direct voltage measurement

Technical Specifications

Applications

• Battery voltage monitoring systems
• Solar panel voltage tracking
• Power supply testing and monitoring
• DC voltage measurement projects
• Overvoltage protection systems
• Energy management dashboards

Important Notes

• Do NOT exceed 25V input – will damage module and microcontroller
• For accurate readings, calibrate with known voltage source
• Resistor tolerance (5%) affects accuracy – calibrate for best results
• For higher voltages, use external voltage divider with appropriate resistors
• Consider using dedicated INA219 for current + voltage monitoring