I2C Digital Wattmeter Gravity

DFRobotSKU: RB-Dfr-819
Manufacturer #: SEN0291

Price  :
Sale price $6.90

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Stock  :
In stock, 3 units

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Description

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

Size

  • 30 x 22 mm / 1.18 x 0.87 in
  • Input Voltage (VCC) : 3.3 V~5.5 V
  • Voltage Range (IN+ or IN- relative to GND): 0 ~ 26 V
  • Voltage Resolution: 4 mV
  • Voltage Relative Error: <±0.2% (Typical)
  • Current Range: 0 ~ ±8 A (Bidirectional current)
  • Current Resolution: 1 mA
  • 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
  • Weight: 4 g

Application

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

Customer Reviews

Based on 2 reviews
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R
Richard
Works Fine with updated code

Arduino code that comes with the library does NOT work correctly, It shows Bus and Shunt voltage, but incorrect Current and Power readings. Updated example from DFRobot on Github works correctly -> https://github.com/DFRobot/DFRobot_INA219/blob/master/example/getVoltageCurrentPower/getVoltageCurrentPower.ino Works fine with Arduino Unos, clones, NodeMCU/8266 as well as D1Mini's.

G
Gordon
Comes with convenient Cable

Wattmeter works as advertised. It comes with a convenient cable that plugs into the white connector

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