Gravity: I2C Digital Wattmeter

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SKU: SEN0291 Brand: DFRobot

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...

$11.55 AUD, inc GST

$10.50 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Delivered by Tue, 24th of Dec

Quantity Discounts:

10-25 $10.08 (exc GST)
25+ $9.76 (exc GST)

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.

The module adopts TI INA219 zero temperature drift current/power monitoring chip and 2W high power low temperature drift 10mO alloy sampling resistor. The voltage and current resolution can reach 4mV and 1mA respectively. Under the full scale measurement condition, the maximum relative error of voltage and current measurement can be superior to ±0.2%. It also provides four I2C addresses that can be configured via the 2P DIP switch. The module accurately measures bi-directional high-side currents (current flowing through the power supply or battery positive), which is especially useful in solar or battery fuel gauge applications where the battery needs to be charged and discharged. This status can be simply determined by positive or negative current readings. In the motor applications, the current can be monitored in real time by monitoring whether the motor current is too large due to overload. In addition, you can use this module to measure the power consumption of various electronic modules or the entire project to evaluate battery life.

Connection Diagram

Gravity: I2C Digital Wattmeter Connection Diagram (Arduino UNO)

Gravity: I2C Digital Wattmeter Connection Diagram (Raspberry Pi 3B)

Measuring the power consumption of the Gravity: pH meter

Monitor the power consumption of the solar panel, battery and outputs of a solar system

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

Specification

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: 4g

Documents

Parts List

Gravity: I2C Digital Wattmeter x1
XH2.54-4P Black Header x1
Gravity-4P I2C/UART Sensor Wire x1

This product is listed in:

Sensors

Product Comments

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Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

$3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
$7+ for Standard Post (typically 6+ business days, tracked)
$11+ for Express Post (typically 2+ business days, tracked)
Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

International Orders - the following rates are for New Zealand and will vary for other countries:

$12+ for Pack and Track (3+ days, tracked)
$16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

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