7Semi INA219 Voltage, Current, Power Monitor Sensor Breakout I2C

The 7Semi INA219 Voltage, Current, and Power Monitor Sensor Breakout (I²C) is a high-precision current shunt and power monitoring module based on the Texas Instruments INA219 IC. It allows measurement of both DC voltage and current, as well as calculation of power consumption, making it ideal for energy monitoring and power management applications. Communicating through an I²C interface, the module provides accurate, real-time electrical data for embedded systems, IoT devices, and battery management systems. Its onboard precision shunt resistor and compact design ensure reliable performance and easy integration.

Technical Specifications:

IC Used: Texas Instruments INA219
Measurement Parameters: Bus voltage, shunt voltage, current, and power
Measurement Method: High-side current sensing
Communication Interface: I²C (two-wire)
Default I²C Address: 0x40 (configurable)
Bus Voltage Range: 0V to 26V DC
Shunt Voltage Range: ±320mV
Current Measurement Range: Up to ±3.2A (depends on shunt resistor)
Power Measurement: Calculated internally by the IC
Shunt Resistor: 0.1Ω, 1% precision (pre-mounted)
Resolution: 12-bit ADC (programmable)
Accuracy: ±1% (typical)
Supply Voltage: 3.0V to 5.5V (logic compatible)
Logic Compatibility: 3.3V and 5V systems
Operating Temperature: -40°C to +85°C
PCB Type: FR-4 with 2.54mm pin headers for easy prototyping

Features:

Measures voltage, current, and power in DC circuits with high accuracy
High-side current sensing allows monitoring without disrupting the ground line
I²C digital communication for simple integration with microcontrollers
Pre-calibrated 0.1Ω shunt resistor for direct current measurement
Programmable gain and resolution settings for different measurement ranges
Supports both 3.3V and 5V logic levels
Compact module with labeled pinouts for easy use
Low power consumption and high efficiency
Compatible with Arduino, ESP32, STM32, and Raspberry Pi
Provides real-time energy usage data for diagnostics and analytics

Applications:

Power consumption monitoring in embedded and IoT systems
Battery charging and discharging measurement
DC motor current sensing and performance tracking
Solar panel and renewable energy monitoring
Robotics and automation power management
Smart energy meters and portable power analyzers
Electric vehicle and battery management systems
Industrial control and power optimization systems
Data logging and laboratory measurement setups
Educational and experimental current sensing projects