DFRobot Gravity: I2C Digital Wattmeter

Gravity: I2C Digital Wattmeter is a high-resolution, high-precision, large-scale measurement module that can measure the voltage, current and power of various electronic modules and electrical equipment within 26V 8A, and the maximum relative error is no more than ±0.2% (A simple manual calibration is required before usage). It can be used for power consumption or battery life evaluation of solar energy systems, battery, motors, controller or electronic modules.

Features

• High precision, high resolution, large range, low temperature drift
• Bidirectional current high side measurement
• Compatible with 3.3V/5V controller
• Sophisticated and compact, easy to embed in the project

Applications

• Solar Power Management
• Battery Fuel Gauge
• Electronic Module Power Evaluation

Specifications

• 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-VCC)
• I2C Address: Four options 0x40, 0x41, 0x44, 0x45
• Dimension: 30.0mm*22.0mm
• Weight: 4g

Documentation

• Product wiki
• More Documents

Package Included

• 1 x Gravity: I2C Digital Wattmeter
• 1 x XH2.54-4P Black Header
• 1 x Gravity-4P I2C/UART Sensor Wire