The 7Semi INA219 Current Sensor Module is a high-precision voltage, current, and power monitoring solution designed for embedded systems, battery-powered devices, industrial automation, robotics, and energy management applications. Based on the Texas Instruments INA219 high-side current shunt and power monitor IC, this module enables accurate measurement of bus voltages from 0V to 26V DC while simultaneously monitoring current consumption and calculating power usage in real time.
Featuring a precision onboard 0.1Ω shunt resistor and an I²C-compatible interface, the INA219 allows developers to easily integrate advanced power monitoring capabilities into Arduino, ESP32, STM32, Raspberry Pi, and other microcontroller-based projects. The device continuously measures both shunt voltage and bus voltage, providing direct current and power calculations through its internal calibration and multiplication engine.
The INA219 includes a programmable gain amplifier (PGA), configurable conversion times, built-in filtering options, and calibration registers that enable highly accurate measurements across a wide range of operating conditions. With support for up to 4 configurable I²C addresses, multiple INA219 modules can be connected on a single I²C bus for multi-channel current and power monitoring applications.
Whether you are monitoring battery discharge, optimizing power consumption, evaluating solar energy systems, measuring motor current, or performing system diagnostics, the 7Semi INA219 Current Sensor Module offers a reliable, accurate, and easy-to-use solution for real-time electrical parameter monitoring.
Key Features
- Measures bus voltage, current, and power simultaneously
- Supports bus voltage sensing from 0V to 26V DC
- Precision onboard 0.1Ω current shunt resistor
- Direct current measurement through internal calibration engine
- Built-in power calculation for real-time wattage monitoring
- I²C and SMBus compatible communication interface
- 4 selectable addresses via solder jumper bridges
- Programmable Gain Amplifier (PGA) for flexible measurement ranges
- Configurable conversion times and digital filtering options
- High measurement accuracy with low offset drift
- Internal calibration registers for improved precision
- Low power consumption suitable for battery-powered applications
- Compatible with Arduino, ESP32, STM32, Raspberry Pi, and other microcontrollers
- Compact breakout board with clearly labeled connections
Includes:
-
1 × 7Semi INA219 Current, Voltage & Power Monitor Module
-
1 × 2.54 mm Pin Header
- Sensor IC:
- INA219
- Measurement:
- Current, Voltage, Power
- Bus Voltage Range:
- 0–26 V DC
- Operating Voltage:
- 3V - 5.5V
- Current Measurement Range:
- Up to ±3.2 A
- Shunt Resistor:
- 0.1 Ω
- ADC Resolution:
- 12-bit
- I²C Address Options:
- 0x40(Default), 0x41, 0x44, 0x45
- Dimension in mm:
- 25mm x 25mm x 13.97mm
- _summary:
- Monitors DC current, bus voltage and power through an I²C interface.
