The INA219 is a high-precision current, voltage, and power monitor designed for bi-directional DC applications. This breakout module uses the INA219 sensor to measure the shunt voltage, supply voltage, current, and power of the system. With I2C (IIC) interface support, it is easy to integrate into DIY and embedded projects for real-time power monitoring, offering flexibility in both low and high-power applications.

Features:

• Bi-directional Current Measurement: Measures both positive and negative current flowing through the system, making it suitable for power supply systems with both input and output monitoring.
• I2C Interface: Simple and easy-to-use communication interface via I2C protocol, allowing easy integration with microcontrollers like Arduino, Raspberry Pi, ESP32, etc.
• Voltage Measurement: Monitors the supply voltage up to 26V.
• High Precision: Provides high-resolution measurements for current, voltage, and power, with accuracy in shunt voltage measurement.
• Low Power Consumption: Designed to consume minimal power for monitoring, making it ideal for battery-powered systems.
• Configurable Gain: The INA219 module provides configurable gain for current measurement to suit different applications.
• Integrated Shunt Resistor: Comes with an onboard shunt resistor for current measurement, but can be customized for higher current ranges with an external resistor.
• Compact Design: Small breakout board for easy integration into projects.

Specifications:

• Sensor: INA219 (Bi-directional current, voltage, and power monitoring).
• Voltage Measurement Range: 0V to 26V.
• Current Measurement Range: ±3.2A (depending on the shunt resistor and measurement settings).
• Shunt Voltage Measurement: 0V to 320mV, with a resolution of 1.0mV.
• Current Resolution: 0.1mA (with appropriate gain and shunt resistor).
• Power Measurement Range: Up to 80W (depending on the system voltage and current).
• Operating Voltage: 3.0V to 5.5V (module supply voltage).
• I2C Address: Default address is 0x40, configurable via address pins.
• Measurement Rate: Configurable sampling rate up to 800 samples per second.
• Onboard Shunt Resistor: 0.1Ω or customizable for different ranges.
• Interface: I2C communication with microcontrollers (Arduino, Raspberry Pi, etc.).
• Operating Temperature Range: -40°C to +85°C.
• Accuracy:
  • Voltage: ±1%.
  • Current: ±1%.
  • Power: ±2%.
• Board Dimensions: 25mm x 19mm.
• Weight: Lightweight, ideal for integration into portable and embedded projects.

Applications:

• Power Monitoring: Real-time monitoring of power systems, especially for battery-powered devices.
• Battery Management Systems: Measure and track the charging and discharging current of batteries in portable devices or electric vehicles.
• IoT Devices: Track and monitor the power consumption of IoT devices.
• Energy Efficiency Projects: Measure power consumption to optimize system efficiency.
• Embedded Systems: Power monitoring for microcontroller-based systems.
• DIY Projects: Suitable for use in custom electronics projects for current and voltage monitoring.