Name: Gravity: I2C Digital Wattmeter Module
Brand: DFRobot
SKU: 147-SEN0291
Price: 767 INR
Availability: InStock

Technical Specifications

Brand:

DFRobot

Input Voltage (VCC):

3.3V~5.5V

Voltage Range (IN+ or IN- relative to GND):

0 ~ 26 V

Voltage Resolution:

4 mV

Voltage Relative Error:

< +-0.2% (Typical)

Current Range:

0 ~ +-8A (Bidirectional current)

Current Resolution:

1mA

Current Relative Error:

< +-0.2% (Typical, manual calibration required)

Power Range:

0 ~ 206 W

Power Resolution:

20 mW (Hardware) / 4 mW (Software)

Quiescent Current:

0.7 mA

Interface:

Gravity I2C (logic level: 0-3.3V)

I2C Address:

Four options 0x40, 0x41, 0x44, 0x45

Dimension:

30.0mm*22.0mm/1.18*0.87 in

Weight:

Warranty Information

All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.

Description

Resources:

Product Wiki

High Precision I2C Digital Wattmeter Module For Voltage, Current, and Power Monitoring Up To 26V 8A

The Gravity I2C Digital Wattmeter Module is a high-precision power monitoring solution designed for measuring voltage, current, and power consumption in electronic circuits, batteries, solar systems, motors, and embedded devices. Built around the TI INA219 current and power monitoring IC, the module supports measurements up to 26V and 8A while delivering excellent accuracy with a maximum relative error of ±0.2% after simple calibration. Its high-resolution measurement capability allows developers and engineers to accurately evaluate power consumption, battery life, and system efficiency.

The module incorporates a 2W low-temperature-drift 10mΩ alloy shunt resistor and supports bidirectional high-side current measurement, making it suitable for applications where charging and discharging currents must be monitored. With voltage and current resolutions of 4mV and 1 mA, respectively, the wattmeter provides detailed real-time electrical data through an I2C interface. Four selectable I2C addresses via onboard DIP switches enable multiple modules to operate on the same bus, making it ideal for advanced monitoring systems, energy management projects, battery-powered devices, and solar energy applications.

Key Features

Voltage, Current, and Power Monitoring: Measures multiple electrical parameters simultaneously.
Measurement Range Up To 26V And 8A: Suitable for a wide range of applications.
TI INA219 Monitoring IC: High-precision current and power measurement.
High Measurement Accuracy: Maximum relative error of ±0.2% after calibration.
4mV Voltage Resolution: Detailed voltage monitoring capability.
1mA Current Resolution: Accurate current measurement.
Bidirectional Current Measurement: Supports charge and discharge current monitoring.
High-Side Current Sensing: Measures current on the positive supply line.
I2C Communication Interface: Simple integration with microcontrollers.
Four Selectable I2C Addresses: Supports multiple modules on a single I2C bus.
Low Temperature Drift Shunt Resistor: Improved measurement stability.
Real-Time Power Analysis: Ideal for energy monitoring and efficiency evaluation.