INA219 DC Current Measurement Sensor Module

The INA219 DC Current Measurement Sensor Module is a high-accuracy current sensing module designed for monitoring DC voltage, current, and power in embedded and electronic systems. Based on the Texas Instruments INA219 current/power monitor IC, it communicates through the I²C interface, making it easy to integrate with Arduino, Raspberry Pi, ESP32, STM32, and other microcontroller platforms. The module measures the voltage drop across a precision shunt resistor to accurately calculate load current while also monitoring the supply bus voltage.

The module features a programmable-gain amplifier (PGA) and a high-resolution 12-bit ADC, allowing precise measurements across a wide range of currents and voltages. It is widely used in battery-powered devices, solar energy systems, power supplies, IoT devices, robotics, and energy monitoring applications. The INA219 can simultaneously measure bus voltage and shunt voltage, enabling direct power calculation without additional components.