CJMCU-219 INA219 I2C Interface Zero Drift Bi-directional Current / Power Supply Monitoring Module

The CJMCU-219 INA219 Module is a high-precision current, voltage, and power monitoring module designed for accurate power management in embedded systems. Powered by Texas Instruments’ INA219 chip, it delivers exceptional measurement accuracy with zero-drift architecture and 12-bit resolution, ensuring minimal error over temperature and time.

This module can measure both current and power across a shunt resistor, making it ideal for monitoring bidirectional current flow in DC power systems. With an I2C communication interface, the CJMCU-219 integrates easily with popular microcontrollers like Arduino, ESP32, and Raspberry Pi for energy monitoring, battery management, and performance optimization.

Key Features

• Zero-Drift Architecture: Ensures long-term stability and high measurement accuracy.

• Bidirectional Current Sensing: Measures current flow in both directions.

• I2C Communication Interface: Compatible with Arduino, Raspberry Pi, and other controllers (up to 3.4 MHz).

• Wide Voltage Range: Measures bus voltages from 0V to +26V.

• High Accuracy & Resolution: 1% max error, 100 µV offset, 12-bit ADC precision.

• Compact & Low Power Design: Perfect for space-constrained and energy-efficient applications.

Applications

• Power supply monitoring

• Battery management systems

• Energy metering and power optimization

• IoT and embedded system development

• Robotics and smart devices

• DC motor and load current sensing

Package Includes

• 1 x CJMCU-219 INA219 I2C Interface Zero Drift Bi-directional Current / Power Supply Monitoring Module

• 1 x 2-pin Terminal Block

• 1 x 6-pin Connector

Product Highlights

The CJMCU-219 INA219 module provides reliable real-time monitoring of current, voltage, and power, helping engineers design energy-efficient and safe systems. Its zero-drift performance and I2C compatibility make it a top choice for precision electronics and embedded power analysis.