INA219 DC Current Sensor Module – High Precision I2C Current & Voltage Monitoring Sensor

The INA219 DC Current Sensor Module is a high-precision current and voltage monitoring module designed for measuring DC current, bus voltage, and power consumption in electronic circuits. Powered by Texas Instruments' INA219 chip, this sensor communicates through the I2C interface, making it easy to integrate with Arduino, ESP32, Raspberry Pi, STM32, and other microcontrollers.

Unlike traditional current sensing methods, the INA219 provides accurate digital measurements without requiring complex analog circuitry. It can measure both current flow and voltage simultaneously, making it ideal for battery monitoring systems, solar energy projects, power management circuits, IoT devices, robotics, and embedded systems.

Whether you're an engineering student, electronics hobbyist, robotics developer, or professional engineer in Bangladesh, the INA219 sensor is an essential tool for monitoring energy consumption and improving system efficiency.

Features:

✔ High-precision current measurement using 12-bit ADC

✔ Measures current, voltage, and power simultaneously

✔ I2C communication interface

✔ Supports bidirectional current sensing

✔ Low power consumption

✔ Built-in calibration functionality

✔ Suitable for battery and solar monitoring

✔ Easy integration with Arduino and ESP32

✔ Compact PCB design

✔ Ideal for IoT and embedded applications

Specifications:

• Sensor IC: INA219
• Communication Interface: I2C
• Operating Voltage: 3V – 5.5V
• Bus Voltage Range: 0V – 26V
• Maximum Current Measurement: ±3.2A
• Current Resolution: Up to 0.8mA
• ADC Resolution: 12-bit
• Power Measurement: Supported
• Current Sensing: Bidirectional
• Address Configuration: Multiple I2C Addresses Available
• Operating Temperature: -40°C to +85°C
• PCB Size: Approx. 26mm × 20mm

Pin Configuration

Power Pins

• VCC → 3.3V / 5V Supply
• GND → Ground

I2C Communication

• SDA → Data Line
• SCL → Clock Line

Current Measurement

• VIN+ → Positive Input
• VIN− → Load Side Connection

Applications

• Battery Monitoring Systems
• Solar Power Projects
• Electric Vehicle Prototypes
• Arduino Power Monitoring
• ESP32 IoT Devices
• Raspberry Pi Energy Measurement
• Robotics Power Analysis
• Smart Energy Meter Projects
• Embedded Systems Development
• Portable Electronic Devices

Why Choose INA219?

The INA219 offers superior accuracy compared to simple shunt resistor measurement methods. Its digital output eliminates analog noise issues while providing real-time current, voltage, and power data. For students and engineers building energy-efficient systems, this module simplifies power monitoring significantly.

Compatibility:

• Arduino UNO
• Arduino Nano
• Arduino Mega
• ESP8266
• ESP32
• Raspberry Pi
• STM32
• PIC Microcontrollers
• AVR Development Boards
• IoT Development Platforms