INA219 DC Current & Power Measurement Module — I2C, 26V / 3.2A

INA219 DC Current & Power Measurement Module — I2C, 26V / 3.2A

The INA219 module measures DC current, voltage, and power simultaneously via I2C — without breaking the circuit. Insert the module in series with the load and read current (up to 3.2A), bus voltage (up to 26V), and calculated power directly from Arduino. Features a 12-bit ADC with 1% accuracy and programmable gain.

Key Specifications

• IC: INA219 | Interface: I2C (0x40–0x4F, 16 addresses)
• Current range: ±3.2A | Voltage range: 0–26V
• Resolution: 12-bit | Accuracy: 1%
• Shunt resistor: 0.1Ω on-board
• Supply voltage: 3.3–5V | Current: 1mA
• Compliance: RoHS compliant

Why Choose This?

• ✅ Measures current + voltage + power — complete power monitoring in one module
• ✅ 16 selectable I2C addresses — monitor up to 16 circuits on one I2C bus
• ✅ High-side measurement — measure current without ground loop issues
• ✅ Adafruit INA219 library — simple Arduino integration

Typical Applications

• Battery charge/discharge monitoring
• Solar panel and power supply monitoring
• Motor current monitoring and overload detection
• IoT power consumption logging

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