SparkFun_INA2XX.h File Reference

Arduino-specific implementation for the SparkFun INA228/INA237 Power Monitors. More...

#include <SparkFun_Toolkit.h>
#include "sfTk/sfDevINA228.h"
#include "sfTk/sfDevINA237.h"
#include <Arduino.h>

Go to the source code of this file.

Classes
class	SfeINA228ArdI2C
	Arduino I2C implementation for the INA228 high-precision power monitor. More...
class	SfeINA237ArdI2C
	Arduino I2C implementation for the INA237 power monitor. More...

Detailed Description

Arduino-specific implementation for the SparkFun INA228/INA237 Power Monitors.

This file provides the Arduino-specific wrappers for the INA228 and INA237 driver classes. Each wrapper class inherits from its platform-independent device driver and implements I2C communication using Arduino's Wire library via the SparkFun Toolkit.

Typical usage (INA228):

#include <SparkFun_INA2XX.h>
 
SfeINA228ArdI2C powerMonitor;
 
void setup() {
    Wire.begin();
    if (!powerMonitor.begin()) {
        Serial.println("INA228 not found!");
        while (1);
    }
    powerMonitor.calibrate(0.015, 10.0);  // 15 mOhm shunt, 10A max
}
 
void loop() {
    float current = 0.0f;
    if (powerMonitor.getCurrent_A(current) == ksfTkErrOk) {
        Serial.print("Current: ");
        Serial.print(current, 4);
        Serial.println(" A");
    }
    delay(500);
}

Author

SparkFun Electronics

Date

June 2026

Copyright

Copyright (c) 2026, SparkFun Electronics Inc. This project is released under the MIT License.

SPDX-License-Identifier: MIT

See also

https://github.com/sparkfun/SparkFun_INA2XX_Arduino_Library