DFRobot - Gravity: GP8512 1-Channel 15-Bit I2C DAC Module (0-2.5V/VCC)

Gravity: GP8512 1‑Channel 15‑bit I2C to 0‑2.5V/VCC DAC Module provides precise digital‑to‑analog signal generation for embedded control and automation systems. Featuring a 15‑bit DAC resolution and 0.01% voltage accuracy, this high‑precision analog output board converts digital commands into stable voltage signals through an I2C interface. The compact Gravity‑series DAC expansion board integrates smoothly with common development platforms such as Arduino, ESP32, and Raspberry Pi, making the module suitable for signal generation, analog control loops, and laboratory instrumentation requiring accurate voltage output within a 3.3V–5V system environment.

Figure: Functional Diagram of Gravity: GP8512: 1-Channel 15bit I2C to 0-2.5V/VCC DAC Module

Figure: Wiring Diagram of Gravity: GP8512: 1-Channel 15bit I2C to 0-2.5V/VCC DAC Module and Arduino UNO

15‑Bit High‑Precision Analog Output

This precision DAC expansion module delivers a 15‑bit digital‑to‑analog conversion range with value mapping from 0–32767, enabling extremely fine voltage adjustments. With output voltage error and linearity error both controlled within 0.01%, the analog signal generator supports applications requiring accurate control signals such as motor speed tuning, servo positioning, and analog calibration systems. Such precision allows microcontroller platforms to generate smooth and stable voltage transitions for control loops and measurement equipment.

Flexible Output Range and Scalable DAC Series

The I2C analog voltage generator supports selectable output ranges of 0–2.5V or 0–VCC, enabling compatibility with a wide variety of analog devices and signal input circuits. Within the broader DAC module series, multiple models provide different resolutions including 8‑bit, 12‑bit, and 15‑bit options along with single‑channel or dual‑channel configurations. Multiple boards can also be cascaded to form multi‑channel analog output systems for complex automation or multi‑signal control projects.

Gravity Interface for Rapid Embedded Integration

A Gravity I2C connector simplifies wiring and accelerates deployment in embedded prototypes and educational projects. The compact analog signal output board communicates through a standard I2C protocol, enabling straightforward integration with microcontroller development platforms and robotics controllers. Reliable digital communication combined with low‑power operation makes this I2C DAC module well suited for automation controllers, IoT signal generation nodes, and precision testing setups.

Such a compact high‑resolution DAC solution serves a wide range of embedded control tasks including motor regulation, laboratory instrumentation, automated lighting adjustment, and environmental control systems. Reliable analog voltage generation combined with simple I2C control makes this module a practical signal‑output component for robotics development, automation equipment, and STEM Education experimentation platforms.

Various DAC module models are available for different signal ranges and resolutions. For model comparisons and selection guidance, refer to the following resource:

Selection Guide of DAC Modules

Selection Guide

Product Name

Gravity: I2C 12-Bit DAC Module

Gravity: 2-Channel I2C DAC Module (0-10V)

Gravity: I2C 4-20mA DAC Module (Arduino Compatible)

Gravity: GP8211 I2C 15-bit DAC Module (0-5V/10V)

Gravity: GP8101S 1-Channel PWM to 0-5V/10V DAC Module

Gravity: GP8501 2-Channel PWM to 0-2.5V/VCC DAC Module

Gravity: GP8413 2-Channel 15-bit I2C to 0-5V/10V DAC Module

Gravity: GP8512: 1-Channel 15bit I2C to 0-2.5V/VCC DAC Module

Gravity: GP8630N I2C/PWM to ±10V / 4-20mA DAC Module (16-bit)

Gravity: GP8503 2-Channel 12bit I2C to 0-2.5V/VCC DAC Module

Gravity: GP8600 1-Channel I2C & PWM to 0-5V / 0-10V / 4-20mA DAC Module (16-bit)

Figure

SKU

DFR0552

DFR0971

DFR0972

DFR1071

DFR1036

DFR1037

DFR1073

DFR1035

DFR1230

DFR1034

DFR1229

Description

I2C 12-Bit DAC

2-Ch 0-10V DAC

4-20mA Current DAC

1-Ch 15-Bit (0-10V)

1-Ch PWM (0-10V)

2-Ch PWM (0-2.5V)

2-Ch 15-Bit (0-10V)

1-Ch 15-Bit (0-2.5V)

Hi-Res ±10V / 4-20mA

2-Ch 12-Bit (0-2.5V)

Hi-Res 0-10V / 4-20mA

Comm.

I2C

I2C

I2C

I2C

PWM

PWM

I2C

I2C

I2C/PWM

I2C

I2C/PWM

Res.

12-bit

12-bit

12-bit

15-bit

8-bit

8-bit

15-bit

15-bit

16-bit

12-bit

16-bit

Channels

1

2

1

1

1

2

2

1

1

2

1

Output Range

0~VCC

0-10V / 0-5V

4-20mA (0-25mA)

0-10V / 0-5V

0-10V / 0-5V

0-2.5V / 0-VCC

0-10V / 0-5V

0-2.5V / 0-VCC

±10V, 0-10V, 4-20mA

0-2.5V / 0-VCC

0-10V, 0-10V, 4-20mA

Chip

MCP4725

GP8403

GP8302

GP8211S

GP8101S

GP8501

GP8413

GP8512

GP8630N

GP8503

GP8600

Key Features

Classic model, with EEPROM, cost-effective

Dual-channel industrial voltage, cascade up to 16 devices

Industrial current loop, requires 18-24V power

High precision (0.01%), single channel

PWM driven, easy to use, industrial voltage

PWM driven, dual channel, low voltage control

High precision, dual channel, industrial voltage

High precision, single channel, low voltage control

Flagship, supports bipolar (negative voltage) output

Medium precision, dual channel, low voltage control

16-bit ultra-high precision, multi-function all-in-one

Add to Cart

• Support 3.3V–5V power supply
• Output voltage error less than 0.01%
• Output voltage linearity error 0.01%
• Selectable output range: 0–2.5V or 0–VCC for analog voltage control devices
• Gravity interface with I2C communication for Arduino‑based automation control
• High‑resolution analog signal generation suitable for precision control applications

• Automatic motor speed control systems
• Audio volume regulation circuits
• Temperature control automation
• Indoor and outdoor lighting control systems
• Laboratory testing and signal simulation equipment

• Operating voltage: 3.3V to 5V
• Communication Method: I2C
• Chip Type: GP8512
• Resolution: 15-bit
• Output Voltage: 0-2.5V or 0-VCC
• Number of channels: 1 channel
• Value Range: 0 - 32767 corresponding to 0-2.5V or 0-VCC
• Output voltage: 0.01%
• Output voltage linearity error: 0.01%

• GP8512: 1-Channel 15bit I2C to 0-2.5V/VCC DAC Module ×1
• Gravity-4P I2C/UART Sensor Cable ×1