DFRobot Gravity v2.1.0 - I2C Digital Wattmeter

Index: DFR-13753 EAN: 5904422377380

A module that allows you to measure electric energy consumption of up to 26 V / 8 A. The maximum measurement error is approx. 0,2%. It communicates through an I2C interface. It works with Arduino and Raspberry Pi.

DFRobot Gravity v2.1.0 - I2C Digital Wattmeter
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Manufacturer: DFRobot
Compatibility: Arduino Raspberry Pi

Description of product: DFRobot Gravity v2.1.0 - digital meter of power consumption I2C

A module that allows you to measure electric energy consumption of up to 26 V / 8 A. The maximum measurement error is approx.0,2%(before the first use, it requires a simple calibration). It can be used tomeasure the actual current consumption or evaluationof the service lifeof the battery.The kit includes a cable adapted to Gravity DFRobot IO Expansion Shield.

DFRobot Gravity - cyfrowy miernik zużycia energii

The application of the energy consumption meter

  • Solar power management
  • The battery indicator
  • The indicator of the power consumption of the electric device

The product is compatible withArduino

User manual for the connection and sample code can be found onthe website of the manufacturer.

Example of connection with Arduinoandanalog PH sensor

The chip usesTI INA219system with the zero temperature of drift of monitoring the current/power and resistor of 10mΩ with high power of 2 W and low temperature of drift. The resolution of voltage and current is4 mVand1 mA. The module has4 I2C addressesselectable withDIP switch. It accurately measures the high, bi-directional currents which is especially useful in applications that usesolar orbattery  power in which the rechargeable battery should be charged and discharged.

Przykład podłączenia miernika zużycia energii z Raspberry Pi

Connection example withRaspberry Pi

Specification of meter of power consumption

  • Version: 2.1.0
  • Supply voltage: from 3.3 V to 5 V
  • Voltage measurement range: 0 V to 26 V
  • Resolution voltage: 4 mV
  • Error of voltage measurement: up to 0,2% (typical)
  • Measuring range of the current: from 0 to 8 A (bi-directional)
  • Resolution of the current: 1 mA
  • Error of current measurement: up to 2% (typical, it requires manual calibration)
  • The range of power measurement: from 0 to 206 W
  • Resolution power: 20 mW (hardware) / 4 MW (software)
  • Quiescent current: 07 mA
  • Interface: I2C Gravity
  • I2C address: 0x40, 0x41, 0x44, 0x45
  • Dimensions: 30 x 22 mm
  • Weight: 4 g

Same-day shipping

  • Crediting the payment for the order on our account on a business day before 10:00 AM means sending the goods on the same day.
  • All packages are being delivered by GLS Group courier and covered with insurance up to 1200 EUR.
  • You will receive a link to track your package and monitor the progress of delivery as soon as it is shipped.

Terms of delivery 

GLS - zone 1

Austria, Belgium, Croatia, The Czech Republic, Denmark, Germany, Netherlands, Poland, Slovakia 

  • Delivery time: 2-4 days
  • Delivery cost: from 4.18 EUR
  • Insurance: 1200 EUR
GLS - zone 2

Bulgaria, Estonia, France, Hungary, Italy, Latvia, Lithuania, Luxembourg, Portugal, Romania, San Marino, Slovenia

  • Delivery time: 2-5 days
  • Delivery cost: from 5.35 EUR
  • Insurance: 1200 EUR
GLS - zone 3

Finland, Greece, Ireland, Spain, Sweden 

  • Delivery time: 2-7 days
  • Delivery cost: from 7.67 EUR
  • Insurance: 1200 EUR

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Product reviews

DFRobot Gravity v2.1.0 - I2C Digital Wattmeter


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Grzegorz 26.12.2022 Confirmed purchase
Szymon 11.10.2022 Confirmed purchase
Mikołaj J. 16.02.2022 Confirmed purchase Translated review
Everything works as it should

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