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DFRobot Gravity I2C 4-20mA DAC Module Arduino Compatible

₹1,189.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Gravity I2C 4-20mA DAC Module, powered by the GP8302 chip, provides a precise 0-25mA current output with 12-bit resolution. Designed for seamless integration with Arduino, it enables control of industrial 4-20mA devices.

Features

  • I2C controlled DAC module providing a 0-25mA analog current output.
  • Features the GP8302 chip with 12-bit resolution for precise control.
  • Arduino compatible with Gravity interface for easy programming and automation.
  • Achieves high accuracy of 0.2% after calibration for critical applications.
  • Configuration settings are saved and retained even after power-off.

Out of stock

Description

This DFRobot Gravity I2C 4-20mA DAC Module facilitates the conversion of digital I2C signals into precise analog current outputs ranging from 0 to 25mA. Utilizing the GP8302 chip, this module achieves a 12-bit resolution, ensuring high fidelity for control applications. It is specifically designed to provide a more accurate 4-20mA current output after calibration, making it suitable for integration with a wide array of standard 4-20mA industrial devices.

The module’s compatibility with Arduino platforms simplifies development and deployment. Through simple programming, users can interface with various industrial equipment such as motors, inverters, valves, and pumps. Its robust design ensures reliable operation, with configurations retained even after power cycles, making it ideal for continuous control systems. The Gravity interface further streamlines connectivity, allowing for quick setup and development in prototyping and automation projects.

Key Features

  • I2C signal input, linearly converted to 0-25mA analog current output.
  • Gravity interface and Arduino library support for automated control.
  • Configuration saved upon power-off, retaining values after restart.
  • 12-bit resolution (0x000-0xFFF) for precise current control.
  • Supports 18V-24V power supply for robust industrial use.
  • Achieves 0.2% accuracy after calibration for critical applications.
  • Wide operating temperature range of -40°C to 125°C.

Applications

  • Intelligent function signal generation.
  • Automatic control systems for lighting or fountains.
  • Automated transformation and control of small equipment.
  • Automatic debugging tools for electromechanical systems.
  • Integration into small-scale test and measurement equipment.

Technical Specifications

Chip TypeGP8302
Input signal12Bit, 0x000-0xFFF (0-25mA)
Input I2C Signal High Level2.7V-5V
Power Supply Voltage18V-24V (24V recommended)
Accuracy0.5% before calibration, 0.2% after calibration
Power Consumption<5mA
Start-up Time<2ms
Operating Temperature-40°C to 125°C
Load ResistanceMax 450Ω (18V), Max 750Ω (24V)
Max. Operating Current0-25mA
I2C Address0x58

Frequently Asked Questions

What is the output current range and resolution of this module?

The module outputs an analog current in the 0-25mA range, controlled by a 12-bit digital input. This provides a fine resolution across the output span, allowing for precise current adjustments suitable for various industrial control and sensing applications. The 4-20mA range is achievable with calibration.

What supply voltage is recommended for the DFRobot Gravity I2C 4-20mA DAC Module?

The module operates on a supply voltage between 18V and 24V. A 24V power supply is strongly recommended to maximize the load resistance capacity, allowing for up to 750Ω. This ensures stable and robust performance in demanding industrial environments.

How can the I2C 4-20mA DAC Module be calibrated for improved accuracy?

The module has an initial accuracy of 0.5% which can be improved to 0.2% after calibration. Calibration involves using an Arduino or compatible controller to adjust the DAC output values via I2C to precisely match desired current levels, typically with an external current meter.

What is the I2C address for the DFRobot Gravity I2C 4-20mA DAC Module?

The fixed I2C address for the DFRobot Gravity I2C 4-20mA DAC Module is 0x58. This address is used for all communication between your Arduino or microcontroller and the DAC module, allowing you to send digital values for current output control.

Does this module retain its configuration after a power cycle?

Yes, a key feature of the DFRobot Gravity I2C 4-20mA DAC Module is its ability to save configured output values to non-volatile memory. This means that the last set current output value will be retained and automatically restored when the module is powered on again, ensuring consistent operation.

Package Includes

  • 1 x Gravity: I2C 4-20mA DAC Module (Arduino Compatible)
  • 1 x Gravity I2C/UART Sensor Connector

Additional Information

Weight 0.018 kg
Dimensions 6 × 6 × 3 cm